RecruitingPhase 1Drug trialA First-in-Human Study of KK2223 in Participants With Relapsed or Refractory T Cell Non-Hodgkin LymphomaThe purpose of this study is to determine the safety, tolerability, PK and pharmacodynamics of KK2223 in adult participants with relapsed or refractory peripheral T cell lymphoma (PTCL) or cutaneous T cell lymphoma (CTCL).