COVID-19 Clinical Trial
Official title:
A Phase 1, Double-Blind, Placebo-Controlled, Randomized, Single Ascending Dose, Multiple Ascending Dose, and Food Effect Study to Assess the Safety, Tolerability, and Pharmacokinetics of GS-441524 in Healthy Subjects
The goal of this clinical trial is to evaluate the safety, tolerability, and pharmacokinetics of GS-441524 in healthy subjects. The main questions to answer are: 1) What dosage of GS-441524 is required for adequate therapeutic plasma levels? 2) Does fed or fasted state produce variability in plasma levels? 3) How is GS-441524 eliminated from the body. Participants will receive varying levels of GS-441524 or placebo to evaluate AEs and plasma levels.
This study will consist of 3 parts: an a single ascending dose (SAD) part, an food effect (FE) part, and an multiple ascending dose (MAD) part. - SAD Part This will be a randomized, double-blind, placebo-controlled single-dose study part of GS-441524 in healthy human subjects. The SAD part will consist of at least 4 cohorts and up to 5 cohorts. Subjects will be randomized into one dose cohort and receive either active drug or placebo. Within each cohort, 6 subjects will receive GS-441524 and 2 subjects will receive placebo. The proposed doses are: 100 mg, 300 mg, 600 mg, and 1000 mg. A sentinel group of 2 subjects will be randomized to active drug or placebo (1 active; 1 placebo) and will be dosed ahead of the rest of each cohort. There will be a minimum of 48 hours between dosing of the 2 sentinel subjects and the remainder of the cohort. A review of sentinel group safety data after dosing will be completed before dose administration will continue in the remaining 6 subjects (5 active; 1 placebo) of each cohort. An optional fifth dose level may be added based on safety and PK data from the first 4 cohorts. - FE Part This will be a randomized, balanced, single-dose, two-treatment (fed vs fasting), two-period, two sequence crossover study part in healthy human subjects using a clinically relevant dose of GS-441524 (a dose that may achieve an anticipated efficacious exposure of 2 µM3). The dose will be selected from the SAD part and will be given once under fasting conditions and once under fed conditions (after completion of a standard FDA defined high-fat breakfast) in 1 cohort of 6 subjects. - MAD Part This will be a randomized, double-blind, placebo-controlled, repeat-dose study part of GS-441524 in healthy human subjects. There will be up to 3 dose cohorts. Subjects will be randomized into one dose cohort to receive either active drug or placebo. Within each cohort, 6 subjects will receive GS-441524 and 2 subjects will receive placebo. Subjects will be administered GS-441524 or placebo twice daily for 5 days (Days 1 to 5) and only a morning dose on Day 6. ;
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