A Study to Evaluate ALN-6222 in Participants With Obesity

Inclusion Criteria - * Is an adult patient with a body mass index ≥30 kg/m\^2 to \<40 kg/m\^2 * Has a hemoglobin A1c \<6.5% Exclusion Criteria - * Has alanine aminotransferase (ALT) or aspartate aminotransferase (AST) \>1.5 times the upper limit of normal (ULN) * Has known human immunodeficiency virus (HIV) infection; or known current or chronic hepatitis C virus or hepatitis B virus infection * Has an estimated glomerular filtration (eGFR) of \<60 mL/min/1.73m\^2 at screening Note: other protocol defined inclusion / exclusion criteria apply