Study to Evaluate the Pharmacokinetics of Firsocostat or Fenofibrate in Adults With Normal and Impaired Hepatic Function

A Phase 1 Open-Label, Parallel-Group, Single-Dose Study to Evaluate the Pharmacokinetics of GS-0976 or Fenofibrate in Subjects With Normal and Impaired Hepatic Function

The primary objectives of this study are to evaluate the single-dose pharmacokinetics (PK) of firsocostat in adults with normal hepatic function, and mild, moderate, or severe hepatic impairment and to evaluate the single-dose PK of fenofibrate in adults with normal hepatic function and mild hepatic impairment.

Key Inclusion Criteria:

Cohort 1 (Mild Hepatic Impairment):

• Male and non-pregnant/non-lactating females with mildly impaired and normal hepatic function.
• Individuals will be current non-smokers (no use of tobacco, nicotine-containing or tetrahydrocannabinol (THC)-containing products within the last 14 days).
• Each individual in the control group will be matched for age (± 10 years), gender, race, and body mass index (± 15% 18 ≤ body mass index (BMI) ≤ 36 kg/m^2) with an individual in the mild hepatic impairment group.
• Individuals with mild hepatic impairment must have a score of 5-6 on the Child-Pugh-Turcotte (CPT) Classification at screening, have diagnosis of chronic (> 6 months), and stable hepatic impairment with no clinically significant changes within 3 months (or 90 days) prior to study drug administration (Day 1).

Cohort 2 (Moderate Hepatic Impairment):

• Male and non-pregnant/non-lactating females with moderately impaired and normal hepatic function.
• Individuals will be current non-smokers (no smoking of tobacco, nicotine-containing or THC-containing products within the last 14 days).
• Each individual in the control group will be matched for age (± 10 years), gender, race, and body mass index (± 15% 18 ≤ BMI ≤ 36 kg/m^2) with an individual in the moderate hepatic impairment group.
• Individuals with moderate hepatic impairment must have a score of 7-9 on the CPT Classification at screening, have diagnosis of chronic (> 6 months), and stable hepatic impairment with no clinically significant changes within 3 months (or 90 days) prior to study drug administration (Day 1).

Cohort 3 (Severe Hepatic Impairment):

• Male and nonpregnant/non-lactating females with severely impaired and normal hepatic function.
• Individuals will be current non-smokers (no use of tobacco, nicotine-containing or THC-containing products within the last 14 days).
• Each individual in the control group will be matched for age (± 10 years), gender, race, and body mass index (± 15% 18 ≤ BMI ≤ 36 kg/m^2) with an individual in the severe hepatic impairment group.
• Individuals with severe hepatic impairment must have a score of 10-15 on the CPT Classification at screening, have diagnosis of chronic (> 6 months), and stable hepatic impairment with no clinically significant changes within 3 months (or 90 days) prior to study drug administration (Day 1).

Cohort 4 (Mild Hepatic Impairment):

• Male and non-pregnant/non-lactating females with mildly impaired and normal hepatic function.
• Individuals will be current non-smokers (no use of tobacco, nicotine-containing or THC-containing products within the last 14 days).
• Each individual in the control group will be matched for age (± 10 years), gender, race, and body mass index (± 15% 18 ≤ body mass index (BMI) ≤ 36 kg/m^2) with an individual in the mild hepatic impairment group.
• Individuals with mild hepatic impairment must have a score of 5-6 on the Child-Pugh-Turcotte (CPT) Classification at screening, have diagnosis of chronic (> 6 months), and stable hepatic impairment with no clinically significant changes within 3 months (or 90 days) prior to study drug administration (Day 1).

NOTE: Other protocol defined Inclusion/ Exclusion criteria may apply.