The goal of this Phase 1, open-label, single-dose, parallel-group study is to evaluate the pharmacokinetics (PK) of a single 10-mg oral dose of baxdrostat in subjects with varying degrees of hepatic function. The main objectives are to:

• To assess the safety and tolerability of baxdrostat following administration of a single oral dose of baxdrostat to subjects with varying degrees of hepatic function; and
• To characterize the PK of baxdrostat following administration of a single oral dose of baxdrostat to subjects with varying degrees of hepatic function.

Participants were administered a single 10-mg oral dose of baxdrostat in the fasted state the morning of Day 1. Plasma samples were drawn at various timepoints. Safety assessments included adverse events, vital signs, 12-lead electrocardiograms (ECGs), clinical laboratory evaluations, and physical examinations.

Twenty subjects in 2 groups based on the Child-Pugh classification in the protocol at screening: up to 10 subjects in the normal hepatic function group and up to 10 subjects in the moderate hepatic impairment group. Twenty subjects entered and completed the study.

Inclusion Criteria:

• Is between the ages of 18 and 80 years, inclusive, and in stable health condition. (For hepatically impaired subjects, their hepatic function category must be stable for a minimum of 3 months prior to screening.)
• Is a non-nicotine user or smokes =<10 cigarettes/day;
• Has a BMI between 18 and 42 kg/m2, inclusive;
• Is able to understand and willing to comply with study procedures and restrictions and provide written informed consent;
• if a male subject with a female partner of childbearing potential must agree to use 2 medically accepted, highly effective methods of birth control for 90 days.
• if male, must agree to abstain from sperm donation for 90 days; and
• if female with a male partner, must be surgically sterile, postmenopausal, or agree to use 2 medically accepted, highly effective methods of birth control from Day -14 until 60 days after study drug dosing

Main Exclusion Criteria:

• Personal or family history of long QT syndrome, torsades de pointes, or other complex ventricular arrhythmias, or family history of sudden death;
• History of, or current, clinically significant arrhythmias;
• Prolonged QTcF (>460 msec) based on the average of triplicate ECGs;
• Estimated glomerular filtration rate (or creatinine clearance) <50 mL/min/1.73 m2;
• Evidence of any of the following: Encephalopathy grade 2 or worse, Seated systolic BP >160 mmHg and/or diastolic BP >100 mmHg, or systolic BP <90 mmHg and/or diastolic BP <50 mmHg, resting heart rate >100 beats per minute (bpm) or <50 bpm, Oral temperature >37.6°C (>99.68°F), Respiration rate <12 or >20 breaths per minute, symptomatic postural tachycardia or orthostatic hypotension, abnormal serum potassium >upper limit of normal range, abnormal serum sodium <130 mEq/L, positive test for HIV antibody, hepatitis C , hepatitis B , or SARS-CoV-2 RNA
• Current treatment with weight loss medication or prior weight loss surgery;
• Use of a moderate or strong inhibitor of CYP3A4 within 14 days prior to the dose of study drug OR use of a moderate or strong inducer of CYP3A4 within 28 days prior to the dose of study drug;
• Corticosteroid use (systemic or extensive topical use) within 3 months prior to study drug dosing
• Pregnant, breastfeeding, or planning to become pregnant during the study

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. "Yes", indicates that AZ are accepting requests for IPD, but this does not mean all requests will be approved.

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA/PhRMA Data-Sharing Principles. For details of our timelines, please refer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org. A Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.