A Study to Learn How the Body Processes the Study Medicine PF-07328948 in People With and Without Reduced Liver Function

Inclusion Criteria: * Male or female of nonchildbearing potential, between the ages of 18 (inclusive) and 75 years, at the screening visit. * Willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures. * BMI of 17.5 to 40.0 kg/m2 (inclusive), and a total body weight ≥45 kg (99 lb). * Group 4 only: at screening, no clinically relevant abnormalities identified by a detailed medical history, physical exam, including blood pressure and pulse rate measurement, ECG and clinical laboratory tests. * Group 4 only: no known or suspected hepatic impairment and meet the criteria based on screening laboratory liver function tests. * Groups 1, 2 \& 3 only: stable hepatic impairment that meets criteria for Class A, B, or C of the Child-Pugh classification with no clinically significant change in disease status within 28 days before screening. * Groups 1, 2 \& 3 only: stable concomitant medications for the management of individual participant's medical history. Exclusion Criteria: * Any condition possibly affecting drug absorption * At screening, a positive result for HIV antibodies. * Evidence of a prothrombotic state, including history of deep vein thrombosis, pulmonary embolism, or arterial thrombosis, or known genetic predisposition. * Other medical or psychiatric condition or laboratory abnormality that may increase the risk of study participation or make the participant inappropriate for the study. * U…