Single Ascending Dose Study to Evaluate Safety Tolerability, Pharmacokinetics, and Pharmacodynamics of PVT201 in Healthy Subjects and Patients (PBC/PSC)

The goal of this clinical trial is to learn what happens to PVT201 when it enters your body and how it affects your immune system. It will also learn about the safety of PVT201 after a single dose. The main questions it aims to answer are: Will participants experience any side effects when taking PVT201? How long does it take PVT201 to leave your body after you take it? Healthy volunteers will: stay in the clinic for two nights, get one dose of PVT201 or a placebo intravenously (through a vein) on Day 1, have blood drawn periodically throughout their stay and be monitored for side effects, and return to the clinic approximately one week after their dose for a final study visit. Patients with primary biliary cholangitis (PBC) or primary sclerosing cholangitis (PSC) will have the same procedures performed as healthy volunteers; however, none of the patients will receive placebo (all patients will be given PVT201).