A Phase 1, First-in-human Study of OKN4395 and Pembrolizumab in Patients With Solid Tumors

The purpose of this study is to investigate the study drug, OKN4395, administered alone and in combination with pembrolizumab. The overall objectives of this study are to determine the safety and tolerability (degree to which side effects of a drug can be tolerated) of OKN4395 alone and in combination with pembrolizumab, OKN4395 and metabolites (broken-down substances) of OKN4395 levels in the blood, and antitumor activity of OKN4395 alone and in combination with pembrolizumab. This study will be split into 2 parts. Part 1a will look at multiple doses of OKN4395 either alone (monotherapy) or with pembrolizumab (combination therapy) administered on day 1 of each 21-day cycle in patients with solid tumors until the participant has disease progression or discontinues for any reason. The dose of OKN4395 will be increased, after each group of 3 or more participants completes their first 3 weeks of treatment and their data is evaluated for safety, with a planned dose range from 10 mg twice a day to 450 mg twice a day through 13 dose levels. Part 1a also includes a parallel substudy (Substudy 1) consisting of at least 12 participants, aiming to test the effect of food and stomach acid on the levels of OKN4395 in the blood as well as its tolerability. Part 1b will evaluate OKN4395 alone and in combination with pembrolizumab administered on day 1 of each 21-day cycle in patients with selected cancer types. Part 1b will comprise 4 cohorts: Cohort 1 in sarcoma (OKN4395 alone), Cohort…

This description comes directly from the study's public registry record.

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