Apicore Wants Specific Study for Penicillamine BE

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Apicore Pharmaceutical Private is asking FDA to require that any ANDA or ANDA supplement for penicillamine capsules be approved only if the bioequivalence study supporting such approval uses a bioanalytical method that stabilizes penicillamine from oxidation as soon as the blood samples are collected and measures copper-bound penicillamine, along with the circulating free penicillamine, that appears in plasma. The company petition says that ANDA methods that do not account for stabilization nor the release of copper-bound penicillamine present a risk that the proposed product is not bioequivalent, and hence does not have the therapeutic benefit described in the labeled claims.

Specifically, Apicore asks that any ANDA or supplement for penicillamine capsules be approved only if the bioequivalence study supporting such approval uses a bioanalytical method that introduces a stabilizing agent to minimize the degradation of free penicillamine post sample collection and includes steps to measure penicillamine from penicillamine-copper complex.

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