A Study to Evaluate the Pharmacokinetics (PK) and Safety of a Single Dose of Treprostinil Palmitil Inhalation Powder (TPIP) in Participants With Normal Hepatic Function and Participants With Hepatic Impairment

Inclusion criteria

• Body mass index between 18.0 and 40.0 kilograms per square meter (kg/m^2), inclusive.

Inclusion criteria

for Participants with Normal Hepatic Function

• In good health, as determined by no clinically significant findings from medical history, physical examination, 12-lead electrocardiogram (ECG), and vital signs measurements, and clinical laboratory assessments (congenital nonhemolytic hyperbilirubinemia [eg, suspicion of Gilbert's syndrome based on total and direct bilirubin] is not acceptable) at screening and check-in, as assessed by the investigator (or designee).

Inclusion criteria

for Participants With Hepatic Impairment:

• Diagnosis of chronic (>6 months), stable hepatic impairment with no clinically significant changes within 30 days prior to dosing, as determined by medical history.
• Participants with type 2 diabetes mellitus may be included, if they have:

• glycosylated hemoglobin A1C ≤8.5% at screening
• fasting blood glucose ≤240 milligrams per deciliter (mg/dL), while participant is using their normal diabetes medication, at screening and check-in.

Exclusion criteria

• History of stomach or intestinal surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs (uncomplicated appendectomy, cholecystectomy, and hernia repair are allowed).
• Use or intend to use any moderate or strong inducers or inhibitors of CYP2C8 or CYP2C9 within 30 days prior to dosing.
• Participation in a clinical trial involving administration of an investigational medicinal product (IMP) (new chemical entity) in the past 30 days or 5 half-lives of that drug (if known) prior to dosing, whichever is longer.

Exclusion criteria

for Participants with Normal Hepatic Function

• Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorder, as determined by the investigator (or designee).
• Positive hepatitis panel and/or positive human immunodeficiency virus test. Participants whose results are compatible with prior immunization may be included.
• Positive urine drug screen at screening or positive alcohol test result or positive urine drug screen at check-in. Results that are compatible with marijuana use are not exclusionary.

Exclusion criteria

for Participants With Hepatic Impairment:

• Current organ transplant or waiting for organ transplant scheduled to occur during the trial.
• Hospitalization for hepatic encephalopathy within 3 months prior to dosing.
• Encephalopathy ≥Grade 2.
• History of drug/chemical abuse within 1 year prior to check-in. Marijuana use is not exclusionary.

Note: Other protocol-defined inclusion/exclusion criteria may apply.