This is a Phase 1, multi-center, open-label, multiple-dose, parallel-group study designed to assess the effect of hepatic insufficiency on the PK of 200 mg BID pacritinib. A total of approximately 22 to 32 subjects are planned, with approximately 8 moderate hepatically impaired subjects, approximately 6 to 8 severe hepatically impaired subjects, and approximately 8 to 16 healthy subjects with normal hepatic function. The primary objective of this study is to characterize and compare the steady-state PK profile of multiple doses (14 days) of 200 mg BID pacritinib in the study population, and the secondary objective is to evaluate the safety and tolerability of multiple doses (14 days) of 200 mg BID pacritinib. The study will consist of a screening period (Day -28 to Day -2), check-in (Day -1), a confinement period including treatment period (Day 1 through Day 14) and post-treatment period (Day 15 through Day 20), followed by a discharge visit (Day 21), and an EOS follow-up telephone call (Day 44). Serial blood samples for PK analysis of pacritinib will be collected pre dose through Day 21 at protocol-specified timepoints CK 18 will be collected . Safety and tolerability will be assessed by AEs, clinical laboratory tests, vital will occur 4 and 24 hours after the AM dose on Day 1, Day 10, Day 12, and Day 14 signs, ECGs, and physical examinations.
This is a Phase 1 study designed to assess the effect of hepatic insufficiency on the PK of pacritinib by study of 14-day BID dosing of pacritinib in subjects with moderate and severe hepatic impairment compared to healthy matched control subjects with normal liver function. Safety and tolerability of multiple day dosing of pacritinib in the subject populations will also be evaluated.