RecruitingDrug trialA Phase 1b/2 Study of CAR T Cell Therapy Targeting CD19 and BCMA in Participants With Relapsed or Refractory AL Amyloidosis.Open-label Phase 1b/2 study with primary objective of this study is to evaluate the safety, tolerability and efficacy of AZD0120 in participants with light chain (AL) amyloidosis.