The purpose of this study is to evaluate the relative bioavailability of Povetacicept formulations, bioequivalence of Povetacicept presentations, and safety and tolerability of Povetacicept.

This clinical trial information was submitted voluntarily under the applicable law and, therefore, certain submission deadlines may not apply. (That is, clinical trial information for this applicable clinical trial was submitted under section 402(j)(4)(A) of the Public Health Service Act and 42 CFR 11.60 and is not subject to the deadlines established by sections 402(j)(2) and (3) of the Public Health Service Act or 42 CFR 11.24 and 11.44.).

Key Inclusion Criteria:

• Body mass index (BMI) of 18.0 to 32.0 kilogram per meter square (kg/m^2), inclusive
• A total body weight of more than (>) 50 kg

Key Exclusion Criteria:

• History of febrile illness that has not fully resolved within 14 days before the dose of study drug.
• Immunization with a live vaccine within 45 days before study drug administration or a non live vaccine within 14 days before study drug administration.

Other protocol defined Inclusion/Exclusion criteria may apply.

Details on Vertex data sharing criteria and process for requesting access can be found at: https://www.vrtx.com/independent-research/clinical-trial-data-sharing