A Study of RO7890597 in Healthy Adult Volunteers

Inclusion Criteria: * Agreement to adhere to the contraception requirements. * Body mass index of 18 to 30 kilograms per square meter (kg/m²). Exclusion Criteria: * Pregnant, breastfeeding, or intending to become pregnant during the study or required contraception period. * Treatment with investigational biologic therapy within 90 days or 5 elimination half-lives, whichever is longer, before study drug initiation. * Treatment with investigational non-biologic therapy within 28 days or 5 elimination half-lives, whichever is longer, before study drug initiation. * Treatment with immunosuppressive medication within 28 days or 5 elimination half-lives, whichever is longer, before study drug initiation. * Treatment with any vaccine within 14 days prior to initiation of study drug, or within 28 days for a live or live attenuated vaccine. * Poor peripheral venous access. * Major surgery within 28 days before study drug initiation or planned major surgery during the study. * Current infection or recent infection requiring antibiotics as defined in the protocol. * History of malignancy within 5 years before screening, except for specified adequately treated cancers. * History of clinically significant drug or food allergy.