ADC Therapeutics’ bid to secure full approval for Zynlonta in relapsed or refractory diffuse large B-cell lymphoma has been complicated by death rates in its confirmatory trial.

ADC Therapeutics’ bid to secure full approval for Zynlonta in relapsed or refractory diffuse large B-cell lymphoma has been complicated by death rates in its confirmatory trial.

Three times as many deaths in the study arm versus the control arm in a trial of ADC Therapeutics' Zynlonta have raised questions about the antibody-drug conjugate (ADC), which…