Sarepta’s Vyondys: Renal Toxicity Concerns That Delayed Approval Get Enhanced Postmarketing Scrutiny, Label Warning
Sarepta must perform enhanced pharmacovigilance for serious renal toxicity events and rhabdomyolysis with the Duchenne muscular dystrophy drug, which carries a label warning for renal toxicity. Approval letter includes 2024 target completion date for ESSENCE confirmatory trial.
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ODE I director Ellis Unger chafed at the notion of approving the Duchenne muscular dystrophy drug golodirsen on the same unvalidated surrogate marker, this time in the face of infection and renal toxicity concerns; OND’s Peter Stein granted Sarepta’s appeal while also calling attention to the company’s failure to timely conduct the eteplirsen confirmatory trial.
Oncology R&D isn’t waning, but investment in neurology and psychiatry drug development are paying off in new drug approvals. Rapid growth in CDER non-malignant hematology approvals reflects longer, broader trend toward orphan drugs.
Formal dispute resolution was key element in four-month turnaround from rejection by US FDA to approval for golodirsen, the second Sarepta DMD drug to clear the agency after appearing to have minimal prospects.