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Safety, tolerability, pharmacokinetics (PK), cardiac conduction and food effect study on single and multiple ascending doses of KAR5585 in healthy adults.
The purpose of this study is to explore the safety, tolerability, pharmacokinetics (PK), and cardiac conduction effects of single and multiple ascending doses of KAR5585 in healthy adults. Food effect will also be evaluated after a single-dose administration.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| KAR5585 | Experimental | KAR5585 Capsules |
|
| Placebo | Placebo Comparator | Placebo capsules |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| KAR5585 Capsules | Drug | Single and multiple ascending doses of KAR5585 (100 mg initial dose) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Number of participants with abnormal physical exam results | Healthy adult volunteers receiving single and multiple doses of KAR5585 administered orally will be monitored for adverse events via physical examination. | From baseline to 4 days post-dose for single dose and baseline to 6 days post-dose for multiple doses |
| Number of participants with abnormal hematology values | Healthy adult volunteers receiving single and multiple doses of KAR5585 administered orally will be monitored for adverse events via lab evaluation of hematology. | From baseline to 4 days post-dose for single dose and baseline to 6 days post-dose for multiple doses |
| Number of participants with abnormal electrocardiogram results | Healthy adult volunteers receiving single and multiple doses of KAR5585 administered orally will be monitored for abnormal ECG results. | From baseline to 4 days post-dose for single dose and baseline to 6 days post-dose for multiple doses |
| Number of participants with abnormal clinical chemistry values | Healthy adult volunteers receiving single and multiple doses of KAR5585 administered orally will be monitored for adverse events via lab evaluation of clinical chemistries. | From baseline to 4 days post-dose for single dose and baseline to 6 days post-dose for multiple doses |
| Number of participants with abnormal urinalysis values | Healthy adult volunteers receiving single and multiple doses of KAR5585 administered orally will be monitored for adverse events via lab evaluation of urinalysis. | From baseline to 4 days post-dose for single dose and baseline to 6 days post-dose for multiple doses |
| Measure | Description | Time Frame |
|---|---|---|
| Plasma area under the curve (AUC0-24) of prodrug KAR5585 and active inhibitor KAR5417 from time zero to 24 hours after dosing | Assessment of AUC 0-24 hours measured on Day 1, 7 and 14 when drug is dosed without a meal | From 0-24 hours on Days 1, 7 and 14 |
| Time to reach maximum observed plasma concentration (Tmax) of prodrug KAR5585 and active inhibitor KAR5417 |
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Inclusion Criteria:
Subject is able to read, write, and comprehend English at a sufficient level to understand study-related materials
Subject is able to provide written informed consent and to comply with all study requirements and restrictions
Subject is male or female and aged 18 to 65 years, inclusive, at the time of informed consent
Subject is in good health as determined by the PI based on detailed medical history, physical examination, vital signs, clinical laboratory tests, ECGs, and other pre-dose evaluations
Subject agrees to use a medically acceptable form of birth control from CRU admission until at least 30 days (female subject) or 90 days (male subject) after the last dose of study drug. Males will also not donate sperm from CRU admission until at least 90 days after the last dose of study drug. If a subject is not sexually active but becomes active during study participation, the subject agrees they and their partner will use a medically accepted form of contraception for the time specified. Medically acceptable forms of contraception are:
If female, subject agrees that a serum pregnancy test ([β hCG] beta human chorionic gonadotropin ) will be performed at Screening, on Day 2 (CRU admission), and at the last study visit and negative test results at Screening and CRU admission are required to be considered for study participation
Subject has a body mass index (BMI) of 20 to 35 kg/m2, inclusive, and body weight < 120 kg at Screening
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Carlos Sanabria, MD | Spaulding Clinical | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Spaulding Clinical | West Bend | Wisconsin | 53095 | United States |
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| ID | Term |
|---|---|
| D000081029 | Pulmonary Arterial Hypertension |
| ID | Term |
|---|---|
| D006976 | Hypertension, Pulmonary |
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
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| ID | Term |
|---|---|
| C000621040 | rodatristat |
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| Placebo Capsules | Drug | Single and multiple ascending doses of placebo (100 mg initial dose) |
|
Assessment of Tmax measured on Day 1, 7 and 14 when drug is dosed without a meal |
| From 0-24 hours on Days 1, 7 and 14 |
| Plasma terminal elimination half- life (T1/2) of prodrug KAR5585 and active inhibitor KAR5417 | Assessment of T1/2 measured on Day 1, 7 and 14 when drug is dosed without a meal | From 0-24 hours on Days 1, 7 and 14 |
| Apparent volume of distribution (Vz/F) of prodrug KAR5585 and active inhibitor KAR5417 | Assessment of Vz/F measured on Day 1, 7 and 14 when drug is dosed without a meal | From 0-24 hours on Days 1, 7 and 14 |
| Maximum peak concentration (Cmax) of prodrug KAR5585 and active inhibitor KAR5417 | Assessment of Cmax measured on Day 1, 7 and 14 when drug is dosed without a meal | From 0-24 hours on Days 1, 7 and 14 |
| Serum levels of serotonin (ng/mL) | Serum serotonin (5-HT) levels will be measured to evaluate the pharmacodynamic effects of KAR5585 administration | Days 1, 7 and 14 |
| Urinary levels of 5-hydroxyindoleacetic acid(mg/24 hrs) | 24 hour urine collection with analysis for 5-HIAA (5-hydroxyindoleacetic acid) levels. | From 0-24 hours on Days 1, 7 and 14 |
| Urinary levels of creatinine (gm/24 hrs) | 24 hour urine collection with analysis for creatinine levels. | From 0-24 hours on Days 1, 7 and 14 |
| Urinary levels of 5-hydroxyindoleacetic acid normalized to creatinine (mg/gm) | 24 hour urine collection with analysis for 5-HIAA (5-hydroxyindoleacetic acid). Urinary creatinine will be used to normalize urinary 5-HIAA levels: urinary 5-HIAA mg/gm creatinine | From 0-24 hours on Days 1, 7 and 14 |
| Plasma levels of 5-hydroxyindoleacetic acid (ng/mL) | Plasma 5-HIAA (5-hydroxyindoleacetic acid) levels will be measured to evaluate the pharmacodynamic effects of KAR5585 administration | Days 1, 7 and 14 |
| Plasma area under the curve (AUC0-24) of prodrug KAR5585 and active inhibitor KAR5417 from time zero to 24 hours after dosing | To determine the effect of food intake on the pharmacokinetics of KAR5585 and its active metabolite KAR5417, a cohort of patients will be studied after a single dose given fasting, followed by the same dose given with a high fat content food. | From 0-24hrs on Days 1, 7 and 14 |
| Time to reach maximum observed plasma concentration (Tmax) of prodrug KAR5585 and active inhibitor KAR5417 | To determine the effect of food intake on the pharmacokinetics of KAR5585 and its active metabolite KAR5417, a cohort of patients will be studied after a single dose given fasting, followed by the same dose given with a high fat content food. | From 0-24hrs on Days 1, 7 and 14 |
| Plasma terminal elimination half-life (T1/2) of prodrug KAR5585 and active inhibitor KAR5417 | To determine the effect of food intake on the pharmacokinetics of KAR5585 and its active metabolite KAR5417, a cohort of patients will be studied after a single dose given fasting, followed by the same dose given with a high fat content food. | From 0-24hrs on Days 1, 7 and 14 |
| Apparent volume of distribution (Vz/F) of prodrug KAR5585 and active inhibitor KAR5417 | To determine the effect of food intake on the pharmacokinetics of KAR5585 and its active metabolite KAR5417, a cohort of patients will be studied after a single dose given fasting, followed by the same dose given with a high fat content food. | From 0-24hrs on Days 1, 7 and 14 |
| Maximum peak concentration (Cmax) of prodrug KAR5585 and active inhibitor KAR5417 | To determine the effect of food intake on the pharmacokinetics of KAR5585 and its active metabolite KAR5417, a cohort of patients will be studied after a single dose given fasting, followed by the same dose given with a high fat content food. | From 0-24hrs on Days 1, 7 and 14 |