RecruitingPhase 1Drug trialSafety and Preliminary Efficacy of MT-601 in Patients With Relapsed/Refractory LymphomaThis study is a Phase 1 multicenter study with a Dose Escalation and Dose Expansion evaluating safety and efficacy of MT-601 administration to patients with Relapsed or Refractory Lymphoma. The starting dose administered is 200 x 10\^6 cells (flat dosing).