Plea To FDA: Set Realistic Bar For New Breast Cancer Trial Endpoint

Commenting on FDA’s draft guidance for accelerated approval using a relatively new surrogate marker of pathologic complete response, Roche/Genentech is wary that FDA may expect too high a bar for results. BIO asks FDA to consider safety when evaluating “magnitude of benefit.”

Stakeholders are concerned that FDA’s vague requirement for a “large difference” in treatment effect in its draft guidance on using pathologic complete response to support accelerated approval in neoadjuvant breast cancer could cause confusion, dissuade development and set up a de facto comparative efficacy requirement.

FDA has not yet approved any drugs for neoadjuvant (pre-operative) breast cancer, but chemotherapy regimens are increasingly being used earlier...

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