Isatuximab Rescue for Inadequate Response to Lenalidomide and Dexamethasone in Transplant Ineligible Patients with Newly Diagnosed Multiple Myeloma: Interim Analysis of the Phase II Iril Study of the Australian Myeloma Research Consortium (AMaRC 18-02)

Abstract

Background: Almost two thirds of transplant-ineligible, treatment naïve multiple myeloma (NDMM, TNE) patients (pts) do not proceed to second line anti-MM therapy. Given depth of response to initial therapy correlates to overall survival (OS), a deep remission should also be the target for this cohort of generally elderly and frail patients. However, this should not come at the expense of either treatment-related or fiscal toxicity. IRIL is a phase II, multicentre, response-adapted study examining treatment intensification with isatuximab (Isa; supported by Sanofi/Genzyme), an anti-CD38 monoclonal antibody, for pts not achieving pre-defined target responses to lenalidomide and dexamethasone (Rd).