A Study to Evaluate the Drug Levels of Abatacept Converted From Drug Substance by Two Different Processes in Healthy Participants

Inclusion Criteria: * Healthy participants, defined as having no clinically significant deviation from normal in medical history; physical examinations that would compromise the ability to participate, complete, and/or interpret the results of the study; 12-lead ECG; vital signs; and clinical laboratory results * Body weight between 60 and 100 kilograms (kg) inclusive, based on weight at screening * Participant must have a suitable injection site without tattoos, scarring, or other conditions in the upper, outer arm that could interfere with SC administration Exclusion Criteria: * Present malignancy or previous malignancy within the last 5 years prior to screening * At risk for tuberculosis * Any chronic bacterial infection within the previous 12 weeks of dosing Other protocol-defined inclusion/exclusion criteria apply