DUBLIN – Oncopeptides AB has withdrawn its troubled multiple myeloma
drug Pepaxto (melphalan flufenamide) from the U.S. market, less than eight months after receiving an accelerated approval from the FDA. The move comes less than a week before the FDA’s Oncologic Drugs Advisory Committee was due to consider the drug’s safety profile because of data anomalies that surfaced over the summer.
Another shoe dropped on Oncopeptides AB when the U.S. FDA issued an alert July 28 citing trial data showing an increased risk of death with the company’s only marketed drug, Pepaxto, used in combination with dexamethasone to treat multiple myeloma. The agency said it’s continuing to evaluate the Ocean trial results and may hold a public meeting to discuss the safety findings and explore the continued marketing of Pepaxto (melphalan flufenamide), which was granted accelerated approval in February as a fifth-line treatment for relapsed or refractory multiple myeloma.
Accelerated approval based on a phase II single-arm trial doesn’t appear to be in the cards for Incyte Corp.’s retifanlimab as a second-line treatment for advanced or metastatic squamous cell anal cancer (SCAC). Following the lead of FDA reviewers June 24, the agency’s Oncologic Drugs Advisory Committee (ODAC) voted 13-4 to recommend that the agency defer its approval decision until more data are available from POD1UM-303, a confirmatory trial in platinum-naïve advanced SCAC.
Biogen Inc.’s $56,000-a-year list price for its newly approved Alzheimer’s drug, Aduhelm (aducanumab), is sending tremors through the prescription drug pricing debate that could shift the epicenter of those discussions to drugs granted accelerated approval based on surrogate endpoints.
While last week’s marathon Oncologic Drugs Advisory Committee meeting to consider accelerated approvals for cancer drugs that didn’t demonstrate effectiveness in confirmatory trials was a good step forward, oncologists need the FDA to do more to ensure drug labeling truly reflects the benefit of the product.
