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Part 1: A first-in-human, open-label, Phase I dose escalation study of DSP107 monotherapy and combination therapy with atezolizumab in patients with advanced solid tumors.
Part 2: Preliminary efficacy assessment of DSP107 in combination with atezolizumab in second or third line treatment of non small cell lung cancer. Preliminary efficacy assessment of DSP107 as a single agent or in combination with atezolizumab in third line treatment of colorectal cancer.
This study will be the first time that DSP107 is administered to human subjects. The aim of the study is to evaluate the safety, pharmacokinetics (PK), pharmacodynamics (PD) and preliminary efficacy of DSP107 monotherapy and combination therapy in a two-part design.
Part 1 will involve DSP107 monotherapy dose escalation in subjects with advanced solid tumors that are not amenable to surgical resection or other approved therapeutic options that have demonstrated clinical benefit. Additional dose finding cohorts will be enrolled to establish a safe dose of DSP107 when given in combination with atezolizumab.
Part 2 will comprise two expansion cohorts:
A) Expansion cohort A consisting of one treatment arm in which subjects will be treated with DSP107 in combination with atezolizumab. This expansion cohort will enroll subjects with non small cell lung cancer who have progressed following no more than 2 lines of prior systemic treatment including treatment with PD-1 or PD-L1 targeting agents.
B) Expansion cohort B consisting of two treatment arms in which subjects will be treated either with DSP107 monotherapy or DSP107 in combination with atezolizumab. This expansion cohort will enroll subjects with colorectal cancer who have progressed following two previous lines of therapy.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| DSP107 monotherapy in advanced solid tumors | Experimental | DSP107 will be administered by intravenous infusion over 1 hour on Days 1, 8 and 15 of each 21-day cycle for up to 12 treatment cycles. Starting dose will be 0.01 mg/kg and maximum dose will not exceed 10 mg/kg. |
|
| DSP107 in combination with atezolizumab in advanced solid tumors | Experimental | DSP107 will be administered by IV infusion over 1 hour on Days 1, 8 and 15 of each 21-day cycle. Subjects will receive atezolizumab 1200 mg by intravenous infusion over 30 mins (first infusion over 1 hour) on Day 1 of every treatment cycle. DSP107 infusion will commence 1 hour following completion of atezolizumab infusion. The study will include up to 12 treatment cycles. |
|
| DSP107 in combination with atezolizumab in non-small cell lung cancer | Experimental | DSP107 10mg/kg will be administered by IV infusion over 1 hour on Days 1, 8 and 15 of each 21-day cycle. Subjects will receive atezolizumab 1200 mg by intravenous infusion over 30 mins (first infusion over 1 hour) on Day 1 of every treatment cycle. DSP107 infusion will commence 1 hour following completion of atezolizumab infusion. The study will include up to 12 treatment cycles. |
|
| DSP107 monotherapy in colorectal cancer | Experimental | DSP107 10mg/kg will be administered by intravenous infusion over 1 hour on Days 1, 8 and 15 of each 21-day cycle for up to 12 treatment cycles.. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| DSP107 | Biological | DSP107 (SIRPα - 4-1BBL) is a bi-functional, trimeric, fusion protein. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Adverse Events (AEs) | An AE is any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal (investigational) product, whether or not related to the medicinal (investigational) product. | Duration of the study, estimated to be 9 months |
| Dose Limiting Toxicities (DLT) | A DLT is defined as a clinically significant AE of laboratory abnormality that is related to DSP107 or the combination of DSP107 and atezolizumab, but is unrelated to disease progression, intercurrent illness or concomitant medications | At the end of Treatment Cycle 1 (each cycle is 21 days) |
| DSP107 Serum Concentration | Serum samples will be collected to determine circulating levels and PK profile of DSP107 | At the end of Treatment Cycle 8 (each cycle is 21 days) |
| Measure | Description | Time Frame |
|---|---|---|
| DSP107 Effect on Phenotypic and Activation Profiles of Peripheral Blood Mononuclear Cells | Blood samples will be collected and examined by flow cytometry to determine the effect of DSP107 on different T-cells, B-cells, NK cells and monocytes, and their expression of activation markers. | At the end of Treatment Cycle 8 (each cycle is 21 days) |
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Inclusion Criteria:
Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
Subject must have measurable disease per RECIST version 1.1
Part 1:
o Histologically confirmed advanced solid tumor that is not amenable to surgical resection or other approved therapeutic options that have demonstrated clinical benefit or subject is intolerant or has refused available therapies
Part 2, Expansion Cohort A:
Part 2, Expansion Cohort B:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jason Luke, MD | University of Pittsburgh | Principal Investigator |
| Anwaar Saeed, MD | University of Pittsburgh | Principal Investigator |
| Jun Zhang, MD | KUMC | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Moores Cancer Center, UCSD | La Jolla | California | 92093 | United States | ||
| University of Colorado Hospital, Anschutz Cancer Pavilion (ACP) |
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Part 1 will involve sequential enrollment of patient cohorts to investigate the safety of up to 7 potential dose levels. Dose escalation will commence with up to 3 single subject cohorts before moving to a 3 + 3 dose escalation scheme to determine the maximum tolerated dose and/or recommended phase II dose.
Up to 3 additional dose finding cohorts will be enrolled in parallel to the monotherapy dose escalation to establish a safe dose of DSP107 when given in combination with atezolizumab. These dose-finding combination arms will start at least one dose level below a DSP107 monotherapy dose that has already been deemed safe.
Part 2 will comprise 2 expansion cohorts:
Expansion cohort A will involve enrollment of patients in a single arm receiving DSP107 in combination with atezolizumab.
Expansion cohort B will involve enrollment of patients randomized to receive either DSP107 monotherapy or DSP107 in combination with atezolizumab.
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| DSP107 in combination with atezolizumab in colorectal cancer | Experimental | DSP107 10mg/kg will be administered by IV infusion over 1 hour on Days 1, 8 and 15 of each 21-day cycle. Subjects will receive atezolizumab 1200 mg by intravenous infusion over 30 mins (first infusion over 1 hour) on Day 1 of every treatment cycle. DSP107 infusion will commence 1 hour following completion of atezolizumab infusion. The study will include up to 12 treatment cycles. |
|
| Atezolizumab | Biological | Atezolizumab is a humanized IgG1 monoclonal antibody that targets PD-L1 |
|
| DSP107 and atezolizumab anti-drug antibody (ADA) formation | Serum samples will be collected throughout the study for assessment of ADA formation using validated assay. | Duration of the study, estimated to be 9 months |
| Preliminary Efficacy (Part 2 only) | Patients will undergo computed tomography (CT) scans to allow assessment of tumor response according to RECIST criteria | Duration of the study, estimated to be 12 months |
| Aurora |
| Colorado |
| 80045 |
| United States |
| Florida Cancer Specialists | Lake Mary | Florida | 32746 | United States |
| Indiana University Simon Cancer Center | Indianapolis | Indiana | 46202 | United States |
| KUCC / KUMCRI University of Kansas Cancer Center | Kansas City | Kansas | 66204 | United States |
| SKCC-Sidney Kimmel Cancer Center Thomas Jefferson University | Philadelphia | Pennsylvania | 19107 | United States |
| UPMC Hillman Cancer Center University of Pittsburgh | Pittsburgh | Pennsylvania | 15232 | United States |
| ID | Term |
|---|---|
| D002289 | Carcinoma, Non-Small-Cell Lung |
| D015179 | Colorectal Neoplasms |
| ID | Term |
|---|---|
| D002283 | Carcinoma, Bronchogenic |
| D001984 | Bronchial Neoplasms |
| D008175 | Lung Neoplasms |
| D012142 | Respiratory Tract Neoplasms |
| D013899 | Thoracic Neoplasms |
| D009371 | Neoplasms by Site |
| D009369 | Neoplasms |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
| D007414 | Intestinal Neoplasms |
| D005770 | Gastrointestinal Neoplasms |
| D004067 | Digestive System Neoplasms |
| D004066 | Digestive System Diseases |
| D005767 | Gastrointestinal Diseases |
| D003108 | Colonic Diseases |
| D007410 | Intestinal Diseases |
| D012002 | Rectal Diseases |
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| ID | Term |
|---|---|
| C000594389 | atezolizumab |
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