FDA approves antibody-drug conjugate for advanced urothelial cancer


The Food and Drug Administration has granted accelerated approval to enfortumab vedotin-ejfv (Padcev) for the treatment of adult patients with locally advanced or metastatic urothelial cancer that has previously been treated with a programmed cell death protein 1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor and a platinum-containing chemotherapy.

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Enfortumab vedotin-ejfv is an antibody-drug conjugate that targets the cell adhesion molecule Nectin-4, which is highly expressed in urothelial cancers.

The conjugate was approved based on overall response rate in a trial of 125 patients with locally advanced or metastatic urothelial cancer who received prior treatment with a PD-1 or PD-L1 inhibitor and platinum-based chemotherapy, the FDA said in a press statement.

The overall response rate was 44%, with 12% having a complete response and 32% having a partial response. The median duration of response was 7.6 months.

The most common side effects for patients were fatigue, peripheral neuropathy, decreased appetite, rash, alopecia, nausea, altered taste, diarrhea, dry eye, pruritis, and dry skin. Patients may experience hyperglycemia, and blood sugar levels should be monitored closely in patients receiving enfortumab vedotin-ejfv, the FDA said.

Patients may experience eye disorders, and health care professionals may consider prophylactic artificial tears for dry eyes and referral to an ophthalmologist for any new symptoms related to the eye, the agency said. The FDA also advises telling patients of reproductive age to use effective contraception during treatment, and for a period of time thereafter. Women who are pregnant or breastfeeding should not take the antibody-drug conjugate because it may cause harm to a developing fetus or newborn baby or cause delivery complications.

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