Objective: The objective of this article was to review existing data of melflufen (Pepaxto) as an additional treatment option for heavily pretreated relapsed and refractory multiple myeloma.
Data Sources: A PubMed search was completed using the search terms melphalan flufenamide; melflufen; melflufen AND relapsed refractory multiple myeloma; melphalan flufenamide and relapsed refractory multiple myeloma between January 1, 2013, and October 18, 2021. Additional information was obtained from the National Institutes of Health Clinical Trial Registry, Federal Drug Administration (FDA) web updates, and Pepaxto prescribing information.
Study Selection/data Extraction: Clinical trials including melflufen in relapsed refractory multiple myeloma and trials related to safety and clinical pharmacology were included.
Data Synthesis: The findings of this review show melflufen in combination with dexamethasone can be used as a treatment option for patients with relapsed and refractory multiple myeloma who have previously received greater than 4 previous lines of therapy, and documented resistance to a proteosome inhibitor, an anti-CD38 monoclonal antibody, and an immunomodulator.
Relevance To Patient Care And Clinical Practice: Melflufen in combination with dexamethasone is a reasonable option for patients with relapsed and refractory multiple myeloma who have received at least 4 previous lines of therapy and considered ineligible for autologous stem cell transplant. Further clinical utilization in earlier lines of therapy is under review, pending the in-depth safety analysis by the FDA.
Conclusions: The FDA approval of melflufen in combination with dexamethasone provides an additional therapy option for patients with heavily pretreated relapsed and refractory multiple myeloma.
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