Partial Hold on Blueprint’s Cancer Drug

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FDA has placed a partial clinical hold on a Blueprint Medicines early-stage trial testing experimental cancer drug BLU-222 because of safety concerns, according to a Reuters report. Some patients faced episodes of light sensitivity and blurred vision, the company says.

The 366-participant drug dosing trial was initiated 4/2023 for treating tumors, such as breast cancer, ovarian cancer, endometrial cancer, among others, according to a U.S. government database. Blueprint says it is working with FDA to investigate the adverse events and amend the trials’ protocol to ensure adequate monitoring is occurring.

Wedbush Securities analyst David Nierengarten says he was encouraged by the absence of uveitis in patients on the drug. Uveitis reports led to the discontinuation of Nuvation Bio’s similar cancer drug study last year, according to Reuters. The visual issues in both drugs suggests it could be a class effect, Citigroup analyst David Lebowitz says.

Patients with advanced solid tumors currently enrolled in the trial will continue on the drug, Blueprint Medicines said, while additional enrollments will be paused until the partial clinical hold is resolved.

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