Isatuximab for relapsed/refractory multiple myeloma: review of key subgroup analyses from the Phase III ICARIA-MM study

In the Phase III ICARIA-MM study (NCT02990338), the addition of the anti-CD38 monoclonal antibody isatuximab to pomalidomide and dexamethasone led to increased progression-free survival and improved response rates in patients with relapsed/refractory multiple myeloma. There is an unmet treatment need, particularly among patients with poor prognoses, including those with high-risk cytogenetics, those who have renal impairment, those who are elderly and those who are refractory to prior lines of treatment. In this review, the subgroup analyses from the ICARIA-MM study, representing subpopulations with poor prognostic factors, are discussed. Overall, the addition of isatuximab to pomalidomide and dexamethasone improved progression-free survival and disease response rates across different subgroups, regardless of prognostic factor.Lay abstract Currently, the majority of patients with multiple myeloma are not cured, and current treatments may not be helpful for patients with poor prognoses, including those with high-risk chromosomal changes, those who have impaired kidney function, those who are elderly and those who are refractory to prior treatments. In this review, we will discuss the benefits of the combination of isatuximab plus pomalidomide and dexamethasone in these difficult-to-treat patients.