RecruitingPhase 1Drug trialA Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of Single Ascending Doses of ABBV-1451 Infusions and Injections in Healthy Adult ParticipantsThe objective of this study is to assess the pharmacokinetic (PK), immunogenicity, safety, and tolerability of ABBV-1451 after single ascending doses in healthy adult volunteers.