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| ID | Type | Description | Link |
|---|---|---|---|
| 20-I-0017 |
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Background:
People get malaria when they are bitten by an infected mosquito. Malaria can be serious and sometimes deadly. Although there are medicines to treat malaria, there is no vaccine that fully prevents infection. Researchers want to test if an experimental drug can help.
Objective:
To test the safety and effectiveness of a drug called CIS43LS that could prevent malaria infection.
Eligibility:
Healthy people ages 18-50 who have never been infected with malaria
Design:
Participants were enrolled on the basis of eligibility criteria, evaluated by clinical laboratory tests, self-reported medical history, and physical examination.
Participants received CIS43LS either infused into a vein in their arm or injected into the fat under the skin. They were monitored for side effects for up to 4 hours after they received the drug. Participants received a thermometer and recorded their temperature and symptoms every day on/with/via a diary card for 7 days after administration. The administration site was checked for redness, swelling, itching or bruising.
Participants had up to 12 follow-up visits. At follow-up visits, participants had blood drawn and were checked for health changes or problems.
Most participants who received CIS43LS took part in a Controlled Human Malaria Infection Challenge (CHMI) along with control participants who did not receive CIS43LS. During the CHMI, mosquitoes carrying the malaria parasite bit participants in a controlled setting. The participants had clinic visits every day for up to 12 days starting 7 days after the CHMI. Participants were treated right away with antimalarial medication if they tested positive for malaria. Approximately 21 days after the CHMI, participants were treated with antimalarial medication for 3 days.
The study lasted 2-6 months depending on the participant's study group.
This was a multicenter, three-part, first-in-human, Phase 1, open-label, dose escalation study to evaluate the dose, safety, tolerability and protective efficacy of an anti-malaria human monoclonal antibody, VRC-MALMAB0100-00-AB (CIS43LS). The primary objective was to evaluate the safety and tolerability of CIS43LS when administered by either intravenous (IV) or subcutaneous (SC) routes. The secondary objectives were to evaluate the pharmacokinetics of CIS43LS at each dose level, determine if IV or SC administration will confer protection following a controlled human malaria infection (CHMI), and estimate the lowest protective dose of CIS43LS.
Part A: Part A evaluated the doses and routes in an open-label, dose escalation design.
Part B: Part B evaluated CIS43LS doses and routes prior to CHMI in participants previously enrolled in Part A and new Part B enrollees. A subgroup of participants from Part A continued to Part B, and some received a second CIS43LS dose intravenously. Additional participants were enrolled in Part B and received CIS43LS intravenously.
Part C: Part C evaluated CIS43LS doses and routes needed to reach a threshold of protection by assessing serum concentration prior to CHMI in a dose down design.
Study Product:
CIS43LS is a human immunoglobulin gamma-1 (IgG1) monoclonal antibody that was developed and manufactured by the National Institutes of Health (NIH) Vaccine Research Center (VRC). A recombinant Chinese hamster ovary DG44 clonal cell line14 developed by the Vaccine Production Program was transferred to the VRC pilot plant for clinical material manufacture. The study product was manufactured according to Good Manufacturing Practice at the VRC pilot plant operated by the Vaccine Clinical Materials Program, Leidos Biomedical Research (Frederick, MD, USA).
VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma.
Participants:
A total of 71 participants enrolled in the study as follows:
Part A: 29 participants enrolled in Groups 1-5
Part B: 21* participants enrolled in Groups 6-10
*Out of the 21 Part B participants, 11 were newly enrolled and 10 were Part A participants who re-enrolled.
Of the 10 Part A participants who re-enrolled in Part B, 3 were back up participants who did not receive additional CIS43LS or CHMI and were terminated early because they were not needed.
Therefore, only 18 participants were actively enrolled in Part B: 11 newly enrolled and 7 Part A participants who re-enrolled.
Part C: 31 participants enrolled in Groups 11-16
Of the 71 participants enrolled, 47 participants received at least one dose of CIS43LS and 43 participants completed the CHMI.
Of the 47 participants who received CIS43LS, 4 participants who received a dose in Part A were also enrolled in Part B and received a second dose as follows:
Therefore, a total of 51 doses of CIS43LS were administered to 47 participants as follows:
Study Duration:
Participants who received CIS43LS were followed for up to 24 weeks after product administration. Control participants were followed through 7 weeks after CHMI.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Part A, Group 1: CIS43LS (5 mg/kg IV) | Experimental | CIS43LS (5 mg/kg) administered by intravenous (IV) infusion (Day 0) |
|
| Part A, Group 2: CIS43LS (5 mg/kg SC) | Experimental | CIS43LS (5 mg/kg) administered by subcutaneous (SC) injection (Day 0) |
|
| Part A, Group 3: CIS43LS (20 mg/kg IV) | Experimental | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) |
|
| Part A, Group 4A: CIS43LS (40 mg/kg IV) | Experimental | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) |
|
| Part A, Group 4B: CIS43LS (40 mg/kg IV) | Experimental | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) |
|
| Part A, Group 5: CHMI Controls | No Intervention |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| VRC-MALMAB0100-00-AB | Drug | VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| Measure | Description | Time Frame |
|---|---|---|
| Number of Participants Reporting Local Reactogenicity Signs and Symptoms Within 7 Days of CIS43LS Product Administration | Participants recorded the occurrence of solicited symptoms on a diary card for 7 days after study product administration and reviewed the diary card with clinic staff at a follow up visit. Participants were counted once for each symptom at the worst severity if they indicated experiencing the symptom more than one time at any severity during the reporting period. The number reported for "Any Local Symptom" is the number of participants reporting any local symptom at the worst severity. Reactogenicity grading (Mild, Moderate, Severe) was done using the U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1. | 7 days after CIS43LS product administration, at approximately Week 1 |
| Number of Participants Reporting Systemic Reactogenicity Signs and Symptoms Within 7 Days of CIS43LS Product Administration | Participants recorded the occurrence of solicited symptoms on a diary card for 7 days after study product administration and reviewed the diary card with clinic staff at a follow up visit. Participants were counted once for each symptom at the worst severity if they indicated experiencing the symptom more than one time at any severity during the reporting period. The number reported for "Any Systemic Symptom" is the number of participants reporting any systemic symptom at the worst severity. Reactogenicity grading (Mild, Moderate, Severe) was done using the U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1. | 7 days after CIS43LS product administration, at approximately Week 1 |
| Number of Participants With One or More Unsolicited Non-Serious Adverse Events (AEs) Following CIS43LS Product Administration | Unsolicited adverse event (AE) data collection included AEs of all severities from the date of product administration through the Day 28 post-product administration visit. At other time periods between study product administration and when greater than 4 weeks after the study product administration, only serious AEs (SAEs reported as a separate outcome and in the AE module) and new chronic medical conditions that required ongoing medical management (reported as a separate outcome) were recorded through the last study visit. The relationship between an AE and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. |
| Measure | Description | Time Frame |
|---|---|---|
| Pharmacokinetic (PK) Parameters of CIS43LS: Maximum Observed Serum Concentration (Cmax) - (Part A and Part B) | Serum concentrations of CIS43LS by dose group following a single administration. Cmax is the peak serum concentration that CIS43LS achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group. After subcutaneous injection, Cmax could not be fully calculated because of COVID-19-related interruptions in sample collection. |
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INCLUSION CRITERIA:
Able and willing to complete the informed consent process
Able to provide proof of identity to the satisfaction of the study clinician completing the enrollment process
Available for clinical follow-up through the last study visit
18 to 50 years of age
In good general health without clinically significant medical history
Physical examination without clinically significant findings within the 56 days prior to enrollment
Weight <= 115 kg (for all groups except Groups 5, 10, and 16) and < 100 kg for Group 15
Adequate venous access if assigned to an IV group or adequate subcutaneous tissue if assigned to an SC group
Willing to have blood samples collected, stored indefinitely, and used for research purposes
Agrees to participate in a controlled human malaria infection (CHMI) and to comply with post-CHMI follow-up requirements (except Group 4B)
Agrees to refrain from blood donation to blood banks for 3 years following participation in CHMI (except Group 4B)
Agrees not to travel to a malaria endemic region during the entire course of study participation
Laboratory Criteria within 56 days prior to enrollment:
White Blood Cell (WBC) 2,500-12,000/mm^3
WBC differential either within institutional normal range or accompanied by the Principal Investigator (PI) or designee approval
Platelets = 125,000 - 500,000/mm^3
Hemoglobin within institutional normal range or accompanied by the PI or designee approval
Creatinine <= 1.1 x upper limit of normal (ULN)
Alanine aminotransferase (ALT) <= 1.25 x ULN
Negative for HIV infection by an FDA approved method of detection
Laboratory Criteria documented any time prior to enrollment:
Negative sickle cell screening test
Negative troponin test (except Group 4B)
Electrocardiogram (ECG) without clinically significant abnormalities (examples may include: pathologic Q waves, significant ST-T wave changes, left ventricular hypertrophy, any non-sinus rhythm excluding isolated premature atrial contractions, right or left bundle branch block, advanced A-V heart block). ECG abnormalities determined by a cardiologist to be clinically insignificant as related to study participation do not preclude study enrollment (except Group 4B)
No evidence of increased cardiovascular disease risk; defined as >10% five-year risk by the non-laboratory method (except Group 4B)
Criteria Specific to Women:
Postmenopausal for at least 1 year, post-hysterectomy or bilateral oophorectomy, or if of childbearing potential:
EXCLUSION CRITERIA:
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| Name | Affiliation | Role |
|---|---|---|
| Clinical Trials Program Leadership:ctpleadership@mail.nih.gov | VRC, National Institute of Allergy and Infectious Diseases, National Institutes of Health | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Maryland Baltimore, Center for Vaccine Development | Baltimore | Maryland | 21201-1595 | United States | ||
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 30686586 | Background | Gaudinski MR, Coates EE, Novik L, Widge A, Houser KV, Burch E, Holman LA, Gordon IJ, Chen GL, Carter C, Nason M, Sitar S, Yamshchikov G, Berkowitz N, Andrews C, Vazquez S, Laurencot C, Misasi J, Arnold F, Carlton K, Lawlor H, Gall J, Bailer RT, McDermott A, Capparelli E, Koup RA, Mascola JR, Graham BS, Sullivan NJ, Ledgerwood JE; VRC 608 Study team. Safety, tolerability, pharmacokinetics, and immunogenicity of the therapeutic monoclonal antibody mAb114 targeting Ebola virus glycoprotein (VRC 608): an open-label phase 1 study. Lancet. 2019 Mar 2;393(10174):889-898. doi: 10.1016/S0140-6736(19)30036-4. Epub 2019 Jan 24. | |
| 27158907 |
| Label | URL |
|---|---|
| NIH Clinical Center Detailed Web Page | View source |
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Individual participant data (IPD) is not shared because it has limited value in a small phase 1 trial of healthy volunteers. We instead report non-IPD data as required in ClinicalTrials.gov.
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A subgroup of 10 participants from Part A who continued to Part B is counted twice: 4 Part A participants received a 2nd CIS43LS dose of 20 mg/kg IV in Part B (1 received 5 mg/kg IV, 1 received 5 mg/kg SC, and 2 received 20 mg/kg IV in Part A) and 6 did not receive CIS43LS in Part B: 3 enrolled as back up in the 20 mg/kg IV group (1 received 5 mg/kg IV, 1 received 5 mg/kg SC and 1 received 20 mg/kg IV in Part A) and 3 enrolled in CHMI (2 received 40 mg/kg IV and 1 enrolled in CHMI in Part A)
Healthy adults were recruited for Parts A and B of the study at the NIH Clinical Center in Bethesda, Maryland, USA. Healthy adults were recruited for Part C of the study at the University of Maryland, Baltimore Center for Vaccine Development and Global Health, Baltimore, MD, USA.
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| ID | Title | Description |
|---|---|---|
| FG000 | Part A, Group 1: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by intravenous (IV) infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| FG001 | Part A, Group 2: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by subcutaneous (SC) injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| FG002 | Part A, Group 3: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| FG003 | Part A, Group 4A: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| FG004 | Part A, Group 4B: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| FG005 | Part A, Group 5: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI); however, Group 5 did not undergo CHMI because of restrictions related to coronavirus disease 2019 (COVID-19) |
| FG006 | Part B, Group 6: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG007 | Part B, Group 7: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) Part B, Group 7 participants included participants previously enrolled in Part A who received either 5 mg/kg IV (1), 5 mg/kg SC (1) or 20 mg/kg IV (2) in the first part of the study and newly enrolled Part B participants VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG008 | Part B, Group 8: CHMI [CIS43LS (40 mg/kg IV) in Part A] | Part B, Group 8 participants included participants previously enrolled in Part A who received CIS43LS (40 mg/kg IV) in the first part of the study but did not receive CIS43LS in Part B of the study. Group 8 participants were enrolled to complete the controlled human malaria infection (CHMI). Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG009 | Part B, Group 9: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG010 | Part B, Group 10: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG011 | Part C, Group 11: CIS43LS (1 mg/kg IV) | CIS43LS (1 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG012 | Part C, Group 12: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG013 | Part C, Group 13: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG014 | Part C, Group 14: CIS43LS (10 mg/kg IV) | CIS43LS (10 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG015 | Part C, Group 15: CIS43LS (10 mg/kg SC) | CIS43LS (10 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| FG016 | Part C, Group 16: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| Title | Milestones | Reasons Not Completed | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Part A |
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| Part B |
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| Part C |
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A total of 71 participants enrolled; however, 10 participants previously enrolled in Part A and who were later enrolled in Part B are counted twice (once in Part A and again in Part B).
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| ID | Title | Description |
|---|---|---|
| BG000 | Part A, Group 1: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by intravenous (IV) infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Each row population reports Baseline Characteristics data separately for each part of the study (e.g., "Part A", "Part B", and "Part C"). |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Number of Participants Reporting Local Reactogenicity Signs and Symptoms Within 7 Days of CIS43LS Product Administration | Participants recorded the occurrence of solicited symptoms on a diary card for 7 days after study product administration and reviewed the diary card with clinic staff at a follow up visit. Participants were counted once for each symptom at the worst severity if they indicated experiencing the symptom more than one time at any severity during the reporting period. The number reported for "Any Local Symptom" is the number of participants reporting any local symptom at the worst severity. Reactogenicity grading (Mild, Moderate, Severe) was done using the U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1. | Population included all enrolled participants who received CIS43LS and provided safety data (via diary card). A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 had received 5 mg/kg subcutaneously, and 2 had received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | 7 days after CIS43LS product administration, at approximately Week 1 |
Unsolicited adverse event (AE) data collection included AEs of all severities for the CIS43LS and/or CHMI recipients only. Unsolicited AEs were recorded from the date of investigational product (IP) administration through the Day 28 post-product administration visit and from CHMI through the Day 28 post-CHMI visit. After and between the indicated time periods, only serious AEs (SAEs) and new chronic medical conditions were recorded as AEs through the last expected study visit at Week 24.
Solicited AEs collected through systematic assessment for IP recipients and unsolicited AEs collected for IP and/or CHMI recipients through non-systematic assessment represent the number and percentage of participants reporting the event. A participant with multiple experiences of the same event is counted once using the event of worst severity. Counted twice: 10 in Part A who enrolled in Part B. Not counted: Group 6 and some in Groups 5 (n=8), 7 (n=3) and 14 (n=1) who received no IP/CHMI.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Part A, Group 1: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by intravenous (IV) infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Perirectal Abscess | Infections and infestations | MedDRA 25.0 | Non-systematic Assessment |
| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Neutropenia | Blood and lymphatic system disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| VRC Clinical Trials Program Leadership | Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health | 301-451-8715 | ctpleadership@mail.nih.gov |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Oct 26, 2021 | Nov 9, 2022 | Prot_SAP_001.pdf |
| ICF | No | No | Yes | Informed Consent Form | Oct 27, 2021 | Jan 3, 2022 | ICF_000.pdf |
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| ID | Term |
|---|---|
| D008288 | Malaria |
| D018512 | Parasitemia |
| ID | Term |
|---|---|
| D011528 | Protozoan Infections |
| D010272 | Parasitic Diseases |
| D007239 | Infections |
| D000096724 | Mosquito-Borne Diseases |
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| ID | Term |
|---|---|
| C000719153 | CIS43LS |
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Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI); however, Group 5 did not undergo CHMI because of restrictions related to coronavirus disease 2019 (COVID-19) |
| Part B, Group 6: CIS43LS (5 mg/kg SC) | Experimental | CIS43LS (5 mg/kg) administered by SC injection (Day 0) |
|
| Part B, Group 7: CIS43LS (20 mg/kg IV) | Experimental | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) Part B, Group 7 participants included participants previously enrolled in Part A who received either 5 mg/kg IV (1), 5 mg/kg SC (1) or 20 mg/kg IV (2) in the first part of the study and newly enrolled Part B participants |
|
| Part B, Group 8: CHMI [CIS43LS (40 mg/kg IV) in Part A] | Other | Part B, Group 8 participants included participants previously enrolled in Part A who received CIS43LS (40 mg/kg IV) in the first part of the study but did not receive CIS43LS in Part B of the study. Group 8 participants were enrolled to complete the controlled human malaria infection (CHMI). |
|
| Part B, Group 9: CIS43LS (40 mg/kg IV) | Experimental | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) |
|
| Part B, Group 10: CHMI Controls | Other | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) |
|
| Part C, Group 11: CIS43LS (1 mg/kg IV) | Experimental | CIS43LS (1 mg/kg) administered by IV infusion (Day 0) |
|
| Part C, Group 12: CIS43LS (5 mg/kg IV) | Experimental | CIS43LS (5 mg/kg) administered by IV infusion (Day 0) |
|
| Part C, Group 13: CIS43LS (5 mg/kg SC) | Experimental | CIS43LS (5 mg/kg) administered by SC injection (Day 0) |
|
| Part C, Group 14: CIS43LS (10 mg/kg IV) | Experimental | CIS43LS (10 mg/kg) administered by IV infusion (Day 0) |
|
| Part C, Group 15: CIS43LS (10 mg/kg SC) | Experimental | CIS43LS (10 mg/kg) administered by SC injection (Day 0) |
|
| Part C, Group 16: CHMI Controls | Other | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) |
|
|
| Plasmodium falciparum (P. falciparum) sporozoite challenge | Other | Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
|
| Day 0 through 4 weeks after CIS43LS product administration |
| Number of Participants With One or More Unsolicited Non-Serious Adverse Events (AEs) Following Controlled Human Malaria Infection (CHMI) | Unsolicited adverse event (AE) data collection included AEs of all severities from CHMI through the Day 28 post-CHMI visit. The relationship between an AE and CHMI was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Day 0 through 4 weeks after CHMI |
| Number of Participants With Serious Adverse Events (SAEs) Following CIS43LS Product Administration | SAEs were recorded from receipt of first study product administration through the last expected study visit at Week 24. The relationship between a SAE and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Day 0 after CIS43LS product administration through the study participation, up to Week 24 |
| Number of Participants With New Chronic Medical Conditions Following CIS43LS Product Administration | New chronic medical conditions that required ongoing medical management were recorded from receipt of first study product administration through the last expected study visit at Week 24. The relationship between a new chronic medical condition and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Day 0 after CIS43LS product administration through the study participation, up to Week 24 |
| Number of Participants With Abnormal Laboratory Measures of Safety Following CIS43LS Product Administration | Abnormal laboratory results recorded as unsolicited adverse events (AEs) are summarized. Safety lab parameters included hematology (hemoglobin, hematocrit, mean corpuscular volume (MCV) platelets, and white blood cell (WBC), red blood cell (RBC), neutrophil, lymphocyte, monocyte, eosinophil and basophil counts) and chemistry (alanine aminotransferase (ALT) and creatinine). Complete Blood Count (CBC) with differential and Chemistry (ALT and creatinine) results were collected at different timepoints in Parts A, B and C throughout the study per the protocol's schedule of evaluations. Institutional laboratory normal ranges as well as the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1 were used. | Day 0 through 4 weeks after CIS43LS product administration |
| Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Maximum Observed Serum Concentration (Cmax) - (Part C) | Serum concentrations of CIS43LS by dose group following a single administration. Cmax is the peak serum concentration that CIS43LS achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group. | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Time to Reach Maximum Observed Serum Concentration (Tmax) - (Part A and Part B) | Tmax is the time it takes to reach Cmax of CIS43LS after it has been administered; it is determined based on the summary PK curve for each dose group. | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Time to Reach Maximum Observed Serum Concentration (Tmax) - (Part C) | Tmax is the time it takes to reach Cmax of CIS43LS after it has been administered; it is determined based on the summary PK curve for each dose group. | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Beta Half-life (T1/2b) - (Part A and Part B) | Beta half-life (T1/2b) is being reported for this study. Beta half-life (T1/2b) is the time required for half of the CIS43LS product to be eliminated from the serum. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall beta half-life and bootstrap 90% confidence intervals (CIs). | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Beta Half-life (T1/2b) - (Part C) | Beta half-life (T1/2b) is the time required for half of the CIS43LS product to be eliminated from the serum. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall beta half-life and bootstrap 95% confidence intervals (CIs). | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Clearance Rate - (Part A and Part B) | Rate of CIS43LS elimination divided by the plasma CIS43LS concentration; determined based on the summary pharmacokinetic (PK) curve for each study group. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall clearance and bootstrap 90% confidence intervals (CIs). | Baseline through 24 weeks after CIS43LS product administration |
| Pharmacokinetic (PK) Parameters of CIS43LS: Clearance Rate - (Part C) | Rate of CIS43LS elimination divided by the plasma CIS43LS concentration; determined based on the summary pharmacokinetic (PK) curve for each study group. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall clearance and bootstrap 95% confidence intervals (CIs). | Baseline through 24 weeks after CIS43LS product administration |
| Number of Participants Who Developed Plasmodium Falciparum (P. Falciparum) Parasitemia Following Controlled Human Malaria Infection (CHMI) Challenge (Part B) | Parasitemia as determined by polymerase chain reaction (PCR) up to day 21 following CHMI to determine whether IV or SC administration of CIS43LS mediates protection against infectious P. falciparum following CHMI | Up to 21 days after CHMI |
| Number of Participants Who Developed Plasmodium Falciparum (P. Falciparum) Parasitemia Following Controlled Human Malaria Infection (CHMI) Challenge (Part C) | Parasitemia as determined by polymerase chain reaction (PCR) up to day 21 following CHMI to determine the lowest dose of CIS43LS administered IV and SC that confers protection against infectious P. falciparum following CHMI in Part C of the study | Up to 21 days after CHMI |
| VRC Clinic, NIH Clinical Center |
| Bethesda |
| Maryland |
| 20814 |
| United States |
| Background |
| Ishizuka AS, Lyke KE, DeZure A, Berry AA, Richie TL, Mendoza FH, Enama ME, Gordon IJ, Chang LJ, Sarwar UN, Zephir KL, Holman LA, James ER, Billingsley PF, Gunasekera A, Chakravarty S, Manoj A, Li M, Ruben AJ, Li T, Eappen AG, Stafford RE, K C N, Murshedkar T, DeCederfelt H, Plummer SH, Hendel CS, Novik L, Costner PJ, Saunders JG, Laurens MB, Plowe CV, Flynn B, Whalen WR, Todd JP, Noor J, Rao S, Sierra-Davidson K, Lynn GM, Epstein JE, Kemp MA, Fahle GA, Mikolajczak SA, Fishbaugher M, Sack BK, Kappe SH, Davidson SA, Garver LS, Bjorkstrom NK, Nason MC, Graham BS, Roederer M, Sim BK, Hoffman SL, Ledgerwood JE, Seder RA. Protection against malaria at 1 year and immune correlates following PfSPZ vaccination. Nat Med. 2016 Jun;22(6):614-23. doi: 10.1038/nm.4110. Epub 2016 May 9. |
| 23929949 | Background | Seder RA, Chang LJ, Enama ME, Zephir KL, Sarwar UN, Gordon IJ, Holman LA, James ER, Billingsley PF, Gunasekera A, Richman A, Chakravarty S, Manoj A, Velmurugan S, Li M, Ruben AJ, Li T, Eappen AG, Stafford RE, Plummer SH, Hendel CS, Novik L, Costner PJ, Mendoza FH, Saunders JG, Nason MC, Richardson JH, Murphy J, Davidson SA, Richie TL, Sedegah M, Sutamihardja A, Fahle GA, Lyke KE, Laurens MB, Roederer M, Tewari K, Epstein JE, Sim BK, Ledgerwood JE, Graham BS, Hoffman SL; VRC 312 Study Team. Protection against malaria by intravenous immunization with a nonreplicating sporozoite vaccine. Science. 2013 Sep 20;341(6152):1359-65. doi: 10.1126/science.1241800. Epub 2013 Aug 8. |
| 36317783 | Background | Kayentao K, Ongoiba A, Preston AC, Healy SA, Doumbo S, Doumtabe D, Traore A, Traore H, Djiguiba A, Li S, Peterson ME, Telscher S, Idris AH, Kisalu NK, Carlton K, Serebryannyy L, Narpala S, McDermott AB, Gaudinski M, Traore S, Cisse H, Keita M, Skinner J, Hu Z, Zeguime A, Ouattara A, Doucoure M, Dolo A, Djimde A, Traore B, Seder RA, Crompton PD; Mali Malaria mAb Trial Team. Safety and Efficacy of a Monoclonal Antibody against Malaria in Mali. N Engl J Med. 2022 Nov 17;387(20):1833-1842. doi: 10.1056/NEJMoa2206966. Epub 2022 Oct 31. |
| 34379916 | Result | Gaudinski MR, Berkowitz NM, Idris AH, Coates EE, Holman LA, Mendoza F, Gordon IJ, Plummer SH, Trofymenko O, Hu Z, Campos Chagas A, O'Connell S, Basappa M, Douek N, Narpala SR, Barry CR, Widge AT, Hicks R, Awan SF, Wu RL, Hickman S, Wycuff D, Stein JA, Case C, Evans BP, Carlton K, Gall JG, Vazquez S, Flach B, Chen GL, Francica JR, Flynn BJ, Kisalu NK, Capparelli EV, McDermott A, Mascola JR, Ledgerwood JE, Seder RA; VRC 612 Study Team. A Monoclonal Antibody for Malaria Prevention. N Engl J Med. 2021 Aug 26;385(9):803-814. doi: 10.1056/NEJMoa2034031. Epub 2021 Aug 11. |
| 36708738 | Result | Lyke KE, Berry AA, Mason K, Idris AH, O'Callahan M, Happe M, Strom L, Berkowitz NM, Guech M, Hu Z, Castro M, Basappa M, Wang L, Low K, Holman LA, Mendoza F, Gordon IJ, Plummer SH, Trofymenko O, Strauss KS, Joshi S, Shrestha B, Adams M, Chagas AC, Murphy JR, Stein J, Hickman S, McDougal A, Lin B, Narpala SR, Vazquez S, Serebryannyy L, McDermott A, Gaudinski MR, Capparelli EV, Coates EE, Wu RL, Ledgerwood JE, Dropulic LK, Seder RA; VRC 612 Part C Study Team. Low-dose intravenous and subcutaneous CIS43LS monoclonal antibody for protection against malaria (VRC 612 Part C): a phase 1, adaptive trial. Lancet Infect Dis. 2023 May;23(5):578-588. doi: 10.1016/S1473-3099(22)00793-9. Epub 2023 Jan 25. |
| CHMI canceled because of restrictions related to coronavirus disease 2019 (COVID-19) |
|
| Received Product Administration |
|
| Completed Controlled Human Malaria Infection (CHMI) |
|
| COMPLETED |
|
| NOT COMPLETED |
|
|
| Received Product Administration |
|
| Completed Controlled Human Malaria Infection (CHMI) |
|
| COMPLETED |
|
| NOT COMPLETED |
|
|
| BG001 | Part A, Group 2: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by subcutaneous (SC) injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| BG002 | Part A, Group 3: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| BG003 | Part A, Group 4A: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| BG004 | Part A, Group 4B: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. |
| BG005 | Part A, Group 5: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI); however, Group 5 did not undergo CHMI because of restrictions related to coronavirus disease 2019 (COVID-19) |
| BG006 | Part B, Group 6: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG007 | Part B, Group 7: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) Part B, Group 7 participants included participants previously enrolled in Part A who received either 5 mg/kg IV (1), 5 mg/kg SC (1) or 20 mg/kg IV (2) in the first part of the study and newly enrolled Part B participants VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG008 | Part B, Group 8: CHMI [CIS43LS (40 mg/kg IV) in Part A] | Part B, Group 8 participants included participants previously enrolled in Part A who received CIS43LS (40 mg/kg IV) in the first part of the study but did not receive CIS43LS in Part B of the study. Group 8 participants were enrolled to complete the controlled human malaria infection (CHMI). Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG009 | Part B, Group 9: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG010 | Part B, Group 10: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG011 | Part C, Group 11: CIS43LS (1 mg/kg IV) | CIS43LS (1 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG012 | Part C, Group 12: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG013 | Part C, Group 13: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG014 | Part C, Group 14: CIS43LS (10 mg/kg IV) | CIS43LS (10 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG015 | Part C, Group 15: CIS43LS (10 mg/kg SC) | CIS43LS (10 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG016 | Part C, Group 16: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). |
| BG017 | Total | Total of all reporting groups |
| Mean |
| Standard Deviation |
| years |
|
| Age, Customized | Each row population reports Baseline Characteristics data separately for each part of the study (e.g., "Part A", "Part B", and "Part C"). | Count of Participants | Participants |
|
| Sex: Female, Male | Each row population reports Baseline Characteristics data separately for each part of the study (e.g., "Part A", "Part B", and "Part C"). | Count of Participants | Participants |
|
| Ethnicity (NIH/OMB) | Each row population reports Baseline Characteristics data separately for each part of the study (e.g., "Part A", "Part B", and "Part C"). | Count of Participants | Participants |
|
| Race/Ethnicity, Customized | Each row population reports Baseline Characteristics data separately for each part of the study (e.g., "Part A", "Part B", and "Part C"). | Count of Participants | Participants |
|
| Weight (kg) | Weight was collected at enrollment day per the protocol Schedule of Evaluations (SoE) for each group. The weight measurement for the Part C, Group 16 CHMI control participants represents weight collected during screening in the screening protocol as the protocol SoE did not require weight collection at enrollment for Group 16. Therefore, the overall weight calculation for Part C does not include the Group 16 participants as noted in the Measure Analysis Population Description below. | Each row population reports baseline characteristics data separately for each part of the study. Part C: A total of 22 weights were collected at enrollment and included in the overall weight measurement: one Group 14 participant withdrew prior to product administration and weight collection, and 8 Group 16 participants had weight collected during screening but not at enrollment. Weight collected for Group 16 participants in the screening protocol is excluded from the overall weight evaluation. | Mean | Standard Deviation | kg |
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| Primary | Number of Participants Reporting Systemic Reactogenicity Signs and Symptoms Within 7 Days of CIS43LS Product Administration | Participants recorded the occurrence of solicited symptoms on a diary card for 7 days after study product administration and reviewed the diary card with clinic staff at a follow up visit. Participants were counted once for each symptom at the worst severity if they indicated experiencing the symptom more than one time at any severity during the reporting period. The number reported for "Any Systemic Symptom" is the number of participants reporting any systemic symptom at the worst severity. Reactogenicity grading (Mild, Moderate, Severe) was done using the U.S. Department of Health and Human Services, National Institutes of Health, National Institute of Allergy and Infectious Diseases, Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1. | Population included all enrolled participants who received CIS43LS and provided safety data (via diary card). A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 had received 5 mg/kg subcutaneously, and 2 had received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | 7 days after CIS43LS product administration, at approximately Week 1 |
|
|
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| Primary | Number of Participants With One or More Unsolicited Non-Serious Adverse Events (AEs) Following CIS43LS Product Administration | Unsolicited adverse event (AE) data collection included AEs of all severities from the date of product administration through the Day 28 post-product administration visit. At other time periods between study product administration and when greater than 4 weeks after the study product administration, only serious AEs (SAEs reported as a separate outcome and in the AE module) and new chronic medical conditions that required ongoing medical management (reported as a separate outcome) were recorded through the last study visit. The relationship between an AE and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Population included all enrolled participants who received CIS43LS and had safety data collected (via clinical assessment and/or lab results). A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 received 5 mg/kg subcutaneously, and 2 received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Day 0 through 4 weeks after CIS43LS product administration |
|
|
|
| Primary | Number of Participants With One or More Unsolicited Non-Serious Adverse Events (AEs) Following Controlled Human Malaria Infection (CHMI) | Unsolicited adverse event (AE) data collection included AEs of all severities from CHMI through the Day 28 post-CHMI visit. The relationship between an AE and CHMI was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Population included all enrolled participants who completed CHMI and had safety data collected (via clinical assessment and/or laboratory results). Part A participants did not complete CHMI because of restrictions related to coronavirus disease 2019 (COVID-19). No participants enrolled in Part B, Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Day 0 through 4 weeks after CHMI |
|
|
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| Primary | Number of Participants With Serious Adverse Events (SAEs) Following CIS43LS Product Administration | SAEs were recorded from receipt of first study product administration through the last expected study visit at Week 24. The relationship between a SAE and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Population included all enrolled participants who received CIS43LS and had safety data collected (via clinical assessment and/or lab results). A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 received 5 mg/kg subcutaneously, and 2 received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Day 0 after CIS43LS product administration through the study participation, up to Week 24 |
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|
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| Primary | Number of Participants With New Chronic Medical Conditions Following CIS43LS Product Administration | New chronic medical conditions that required ongoing medical management were recorded from receipt of first study product administration through the last expected study visit at Week 24. The relationship between a new chronic medical condition and the study product was assessed by the investigator based on clinical judgment and the definitions outlined in the protocol. A participant with multiple experiences of the same event is counted once using the event of worst severity. | Population included all enrolled participants who received CIS43LS and had safety data collected (via clinical assessment and/or lab results). A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 received 5 mg/kg subcutaneously, and 2 received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Day 0 after CIS43LS product administration through the study participation, up to Week 24 |
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| Primary | Number of Participants With Abnormal Laboratory Measures of Safety Following CIS43LS Product Administration | Abnormal laboratory results recorded as unsolicited adverse events (AEs) are summarized. Safety lab parameters included hematology (hemoglobin, hematocrit, mean corpuscular volume (MCV) platelets, and white blood cell (WBC), red blood cell (RBC), neutrophil, lymphocyte, monocyte, eosinophil and basophil counts) and chemistry (alanine aminotransferase (ALT) and creatinine). Complete Blood Count (CBC) with differential and Chemistry (ALT and creatinine) results were collected at different timepoints in Parts A, B and C throughout the study per the protocol's schedule of evaluations. Institutional laboratory normal ranges as well as the DAIDS Table for Grading the Severity of Adult and Pediatric Adverse Events, Corrected Version 2.1 were used. | Population included all enrolled participants who received CIS43LS and had safety data collected via laboratory results. A subgroup of 4 participants from Part A who continued to Part B are counted twice, and received a second CIS43LS dose intravenously (IV): 4 received CIS43LS at a dose of 20 mg/kg IV in Part B (1 had previously received 5 mg/kg IV, 1 had received 5 mg/kg subcutaneously, and 2 had received 20 mg/kg IV). No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Day 0 through 4 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Maximum Observed Serum Concentration (Cmax) - (Part A and Part B) | Serum concentrations of CIS43LS by dose group following a single administration. Cmax is the peak serum concentration that CIS43LS achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group. After subcutaneous injection, Cmax could not be fully calculated because of COVID-19-related interruptions in sample collection. | Population included all enrolled participants who received CIS43LS intravenously in Part A and/or Part B of the study with up to 24 weeks of pharmacokinetic data (N=25). The 5 mg/kg SC dose group could not be evaluated due to truncated sample collections. Data in the 20 mg/kg IV dose group included 1 who received 5 mg/kg IV, 1 who received 5 mg/kg SC, and 2 who received 20 mg/kg IV in Part A of the study and received a second dose of CIS43LS at 20 mg/kg of body weight in Part B of the study. | Posted | Mean | Standard Deviation | μg/ml | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Maximum Observed Serum Concentration (Cmax) - (Part C) | Serum concentrations of CIS43LS by dose group following a single administration. Cmax is the peak serum concentration that CIS43LS achieves after it has been administered; it is determined as a maximum value on the summary pharmacokinetic (PK) curve for each study group. | Population included 22 enrolled participants who received CIS43LS: 21 CIS43LS participants with 24 weeks of pharmacokinetic data and one CIS43LS participant with 8 weeks of data (N=22). The participant with 8 weeks of data was assigned to the 10 mg/kg IV dose group and withdrew from the study at Day 15 post-CHMI. | Posted | Mean | Standard Deviation | μg/ml | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Time to Reach Maximum Observed Serum Concentration (Tmax) - (Part A and Part B) | Tmax is the time it takes to reach Cmax of CIS43LS after it has been administered; it is determined based on the summary PK curve for each dose group. | Population included all enrolled participants who received CIS43LS intravenously in Part A and/or Part B of the study with up to 24 weeks of pharmacokinetic data (N=25). The 5 mg/kg SC dose group could not be evaluated due to truncated sample collections. Data in the 20 mg/kg IV dose group included 1 who received 5 mg/kg IV, 1 who received 5 mg/kg SC, and 2 who received 20 mg/kg IV in Part A of the study and received a second dose of CIS43LS at 20 mg/kg of body weight in Part B of the study. | Posted | Mean | Standard Deviation | days | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Time to Reach Maximum Observed Serum Concentration (Tmax) - (Part C) | Tmax is the time it takes to reach Cmax of CIS43LS after it has been administered; it is determined based on the summary PK curve for each dose group. | Population included 22 enrolled participants who received CIS43LS: 21 CIS43LS participants with 24 weeks of pharmacokinetic data and one CIS43LS participant with 8 weeks of data (N=22). The participant with 8 weeks of data was assigned to the 10 mg/kg IV dose group and withdrew from the study at Day 15 post-CHMI. | Posted | Mean | Standard Deviation | days | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Beta Half-life (T1/2b) - (Part A and Part B) | Beta half-life (T1/2b) is being reported for this study. Beta half-life (T1/2b) is the time required for half of the CIS43LS product to be eliminated from the serum. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall beta half-life and bootstrap 90% confidence intervals (CIs). | Population included all enrolled participants who received CIS43LS subcutaneously and intravenously in Part A and/or Part B of the study with up to 24 weeks of pharmacokinetic. Due to pandemic related sample collection interruptions, Part A and Part B of the study were analyzed in conjunction to achieve adequate sample size for population pharmacokinetic model used to generate the population PK parameters as per protocol, including beta half-life and clearance. | Posted | Number | 90% Confidence Interval | days | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Beta Half-life (T1/2b) - (Part C) | Beta half-life (T1/2b) is the time required for half of the CIS43LS product to be eliminated from the serum. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall beta half-life and bootstrap 95% confidence intervals (CIs). | Population included 22 enrolled participants who received CIS43LS: 21 CIS43LS participants with 24 weeks of pharmacokinetic (PK) data and one CIS43LS participant with 8 weeks of data (N=22). The participant with 8 weeks of data was assigned to the 10 mg/kg IV dose group and withdrew from the study at Day 15 post-CHMI. Per protocol, population PK analysis was performed to generate compartmental PK parameters, including clearance and half-life. | Posted | Number | 95% Confidence Interval | days | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Clearance Rate - (Part A and Part B) | Rate of CIS43LS elimination divided by the plasma CIS43LS concentration; determined based on the summary pharmacokinetic (PK) curve for each study group. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall clearance and bootstrap 90% confidence intervals (CIs). | Population included all enrolled participants who received CIS43LS subcutaneously and intravenously in Part A and/or Part B of the study with up to 24 weeks of pharmacokinetic (PK) data (N=29). Due to pandemic related sample collection interruptions, Part A and Part B of the study were analyzed in conjunction to achieve adequate sample size for population pharmacokinetic model used to generate the population PK parameters as per protocol, including beta half-life and clearance. | Posted | Number | 90% Confidence Interval | ml/day | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Pharmacokinetic (PK) Parameters of CIS43LS: Clearance Rate - (Part C) | Rate of CIS43LS elimination divided by the plasma CIS43LS concentration; determined based on the summary pharmacokinetic (PK) curve for each study group. A two-compartmental population pharmacokinetic model with first order SC absorption was used to estimate overall clearance and bootstrap 95% confidence intervals (CIs). | Population included 22 enrolled participants who received CIS43LS: 21 CIS43LS participants with 24 weeks of pharmacokinetic (PK) data and one CIS43LS participant with 8 weeks of data (N=22). The participant with 8 weeks of data was assigned to the 10 mg/kg IV dose group and withdrew from the study at Day 15 post-CHMI. Per protocol, population PK analysis was performed to generate compartmental PK parameters, including clearance and half-life. | Posted | Number | 95% Confidence Interval | ml/day | Baseline through 24 weeks after CIS43LS product administration |
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| Secondary | Number of Participants Who Developed Plasmodium Falciparum (P. Falciparum) Parasitemia Following Controlled Human Malaria Infection (CHMI) Challenge (Part B) | Parasitemia as determined by polymerase chain reaction (PCR) up to day 21 following CHMI to determine whether IV or SC administration of CIS43LS mediates protection against infectious P. falciparum following CHMI | Population included all participants in Part B who completed CHMI. Part A participants did not complete CHMI because of restrictions related to COVID-19. A subgroup of 4 study participants received 2 doses of CIS43LS: 1 received 5 mg/kg IV and 2 received 20 mg/kg in Part A of the study and received second antibody administration at 20 mg/kg IV in Part B of the study; 1 received 5 mg/kg SC in Part A and 20 mg/kg IV in Part B of the study. No participants enrolled in Group 6: CIS43LS (5 mg/kg SC). | Posted | Count of Participants | Participants | Up to 21 days after CHMI |
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| Secondary | Number of Participants Who Developed Plasmodium Falciparum (P. Falciparum) Parasitemia Following Controlled Human Malaria Infection (CHMI) Challenge (Part C) | Parasitemia as determined by polymerase chain reaction (PCR) up to day 21 following CHMI to determine the lowest dose of CIS43LS administered IV and SC that confers protection against infectious P. falciparum following CHMI in Part C of the study | Population included all participants in Part C who completed CHMI. | Posted | Count of Participants | Participants | Up to 21 days after CHMI |
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|
| 0 |
| 4 |
| 0 |
| 4 |
| 4 |
| 4 |
| EG001 | Part A, Group 2: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by subcutaneous (SC) injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. | 0 | 4 | 0 | 4 | 4 | 4 |
| EG002 | Part A, Group 3: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma.. | 0 | 5 | 0 | 5 | 2 | 5 |
| EG003 | Part A, Group 4A: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. | 0 | 5 | 0 | 5 | 3 | 5 |
| EG004 | Part A, Group 4B: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. | 0 | 3 | 0 | 3 | 2 | 3 |
| EG005 | Part B, Group 7: CIS43LS (20 mg/kg IV) | CIS43LS (20 mg/kg) administered by IV infusion (Day 0) Part B, Group 7 participants included participants previously enrolled in Part A who received either 5 mg/kg IV/SC or 20 mg/kg IV in the first part of the study and newly enrolled Part B participants VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 4 | 0 | 4 | 3 | 4 |
| EG006 | Part B, Group 8: CHMI [CIS43LS (40 mg/kg IV) in Part A] | Part B, Group 8 participants included participants previously enrolled in Part A who received CIS43LS (40 mg/kg IV) in the first part of the study but did not receive CIS43LS in Part B of the study. Group 8 participants were enrolled to complete the controlled human malaria infection (CHMI). Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 2 | 0 | 2 | 0 | 2 |
| EG007 | Part B, Group 9: CIS43LS (40 mg/kg IV) | CIS43LS (40 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 4 | 1 | 4 | 2 | 4 |
| EG008 | Part B, Group 10: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 6 | 0 | 6 | 1 | 6 |
| EG009 | Part C, Group 11: CIS43LS (1 mg/kg IV) | CIS43LS (1 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 7 | 0 | 7 | 5 | 7 |
| EG010 | Part C, Group 12: CIS43LS (5 mg/kg IV) | CIS43LS (5 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 4 | 0 | 4 | 3 | 4 |
| EG011 | Part C, Group 13: CIS43LS (5 mg/kg SC) | CIS43LS (5 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 4 | 0 | 4 | 4 | 4 |
| EG012 | Part C, Group 14: CIS43LS (10 mg/kg IV) | CIS43LS (10 mg/kg) administered by IV infusion (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 3 | 0 | 3 | 2 | 3 |
| EG013 | Part C, Group 15: CIS43LS (10 mg/kg SC) | CIS43LS (10 mg/kg) administered by SC injection (Day 0) VRC-MALMAB0100-00-AB: VRC-MALMAB0100-00-AB (CIS43LS) is a monoclonal antibody that recognizes a unique and conserved region of the Plasmodium falciparum (P. falciparum) circumsporozoite protein and incorporates an LS mutation to increase product half-life in plasma. Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 4 | 0 | 4 | 4 | 4 |
| EG014 | Part C, Group 16: CHMI Controls | Control participants who did not receive CIS43LS and were enrolled to complete the controlled human malaria infection (CHMI) Plasmodium falciparum (P. falciparum) sporozoite challenge: Participants were exposed to bites on the forearm from Anopheles stephensi mosquitoes infected with P. falciparum (3D7 strain). | 0 | 6 | 0 | 6 | 0 | 6 |
| Diarrhoea | Gastrointestinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Vomiting | Gastrointestinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Upper Respiratory Tract Infection | Infections and infestations | MedDRA 25.0 | Non-systematic Assessment |
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| Viral Infection | Infections and infestations | MedDRA 25.0 | Non-systematic Assessment |
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| Muscle Strain | Injury, poisoning and procedural complications | MedDRA 25.0 | Non-systematic Assessment |
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| Blood Creatinine Increased | Investigations | MedDRA 25.0 | Non-systematic Assessment |
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| Dizziness | Nervous system disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Administration site pain | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Administration site bruise | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Malaise | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Myalgia | Musculoskeletal and connective tissue disorders | MedDRA 25.0 | Systematic Assessment |
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| Headache | Nervous system disorders | MedDRA 25.0 | Systematic Assessment |
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| Nausea | Gastrointestinal disorders | MedDRA 25.0 | Systematic Assessment |
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| Arthralgia | Musculoskeletal and connective tissue disorders | MedDRA 25.0 | Systematic Assessment |
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| Pyrexia | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Lipoma | Neoplasms benign, malignant and unspecified (incl cysts and polyps) | MedDRA 25.0 | Non-systematic Assessment |
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| Conjunctivitis Allergic | Eye disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Gastroenteritis | Infections and infestations | MedDRA 25.0 | Non-systematic Assessment |
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| Administration site pruritus | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Administration site erythema | General disorders | MedDRA 25.0 | Systematic Assessment |
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| Abdominal Pain | Gastrointestinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Fibula Fracture | Injury, poisoning and procedural complications | MedDRA 25.0 | Non-systematic Assessment |
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| Pain In Extremity | Musculoskeletal and connective tissue disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Rotator Cuff Syndrome | Musculoskeletal and connective tissue disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Headache | Nervous system disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Dysmenorrhoea | Reproductive system and breast disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Hypertension | Vascular disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Nausea | Gastrointestinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Fatigue | General disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Alanine Aminotransferase Increased | Investigations | MedDRA 25.0 | Non-systematic Assessment |
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| Myalgia | Musculoskeletal and connective tissue disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Menstruation Irregular | Reproductive system and breast disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Epistaxis | Respiratory, thoracic and mediastinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Rhinorrhoea | Respiratory, thoracic and mediastinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Upper-Airway Cough Syndrome | Respiratory, thoracic and mediastinal disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Skin Reaction | Skin and subcutaneous tissue disorders | MedDRA 25.0 | Non-systematic Assessment |
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| Haematoma | Vascular disorders | MedDRA 25.0 | Non-systematic Assessment |
|
Not provided
Not provided
| D000079426 |
| Vector Borne Diseases |
| D018805 | Sepsis |
| D018746 | Systemic Inflammatory Response Syndrome |
| D007249 | Inflammation |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
|
|
| 21-30 years |
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| 31-40 years |
|
| 41-50 years |
|
|
|
| Male |
|
|
|
| Not Hispanic or Latino |
|
| Unknown or Not Reported |
|
|
|
| Black or African American |
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| White |
|
| Multiracial |
|
|
|
|
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Mild |
|
| Moderate |
|
| Severe |
|
| Muscle Aches |
|
| Headache |
|
| Chills |
|
| Nausea |
|
| Joint Pain |
|
| Temperature (Fever) |
|
| Any Systemic Symptom |
|
| Unrelated to Study Product |
|
| Total Number of Participants who had One or More Non-Serious Unsolicited AE after CIS43LS |
|
| Unrelated to CHMI |
|
| Total Number of Participants who had One or More Non-Serious Unsolicited AE after CHMI |
|
| Unrelated to Study Product |
|
| Total number of Participants With SAEs |
|
| Neutrophil Count |
|
| Number of Participants with one or more Abnormal Laboratory Results AE Related to Study Product |
|
| Number of Participants with one or more Abnormal Laboratory Results AE Unrelated to Study Product |
|
| Total Number of Participants who had Any Abnormal Laboratory Results Reported as AEs |
|