The purpose of this study is to evaluate the safety, pharmacokinetics, and pharmacodynamics of RO7875913 in healthy participants.

Inclusion Criteria:

• Agreement to adhere to the contraception requirements
• Body weight > 40 kilogram (kg) with a body mass index of 18-30 kg per meter square (kg/m^2)

Exclusion Criteria:

• Positive test result for hepatitis B surface antigen, hepatitis C virus (HCV), or human immunodeficiency virus (HIV) antibody screen
• History of any malignancy
• Major surgical procedure within 28 days prior to initiation of study treatment, or anticipation of need for a major surgical procedure during the study
• History or clinical manifestations of significant metabolic, hepatic, renal, pulmonary, cardiovascular, hematologic, gastrointestinal, urologic, neurologic, or psychiatric disorders
• Known allergy or hypersensitivity to any component of the RO7875913 formulation
• Treatment with investigational biologic therapy (or blinded comparator) within 90 days or 5 drug elimination half-lives, whichever is longer, prior to initiation of study drug
• Treatment with investigational non-biologic therapy (or blinded comparator) within 28 days or 5 drug elimination half-lives, whichever is longer, prior to initiation of study drug
• Treatment with any immunosuppressive medication within 28 days or 5 drug elimination half-lives, whichever is longer, prior to initiation of study drug