Celltrion Biosimilar Headed to Panel on ‘Highly Similar’ Finding

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FDA reviewers have concluded that Celltrion’s proposed biosimilar (CT-P13) is highly similar to Janssen’s Remicade (infliximab), notwithstanding minor differences in clinically inactive components. This finding was summarized in briefing documents released in advance of a 2/9 advisory committee review on the latest biosimialr product to obtain an agency review. The reviewers noted that there are no clinically meaningful differences between CT-P13 and Remicade in terms of the safety, purity, and potency of the product to support the demonstration that CT-P13 is biosimilar to the US-licensed Remicade as studied in rheumatoid arthritis and ankylosing spondylitis indications.

The briefing documents said Celltrion used a non-U.S.-licensed comparator (European Union-approved Remicade in some studies intended to support a demonstration of biosimilarity to the U.S.-licensed reference product. “Accordingly, Celltrion was required to scientifically justify the relevance of that data by establishing an adequate scientific bridge between EU-approved Remicade, the U.S.-licensed reference product and CT-P13,” the agency said. “Review of an extensive battery of test results provided by Celltrion confirmed the relevance of comparative clinical and non-clinical data with EU-approved Remicade to support conclusions of biosimilarity to U.S.-licensed Remicade.”

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