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The ACR Updates Biosimilar Position Statement

Keri Losavio  |  April 4, 2018

In March, the ACR released a white paper designed primarily to help rheumatologists and rheumatology health professionals gain an understanding of biosimilars.1 This research-based education piece examines the scientific, economic and prescribing issues related to the use of biosimilars. Now, the ACR has released an update to its official position statement on the use of biosimilar therapies for rheumatology patients that further addresses extrapolation and emphasizes the importance of rigorous post-market surveillance as part of the approval process. The position statement will mainly be used to share the ACR’s perspective and discuss the various issues with external stakeholders for the benefit of the rheumatology subspecialty.

The previous position statement on biosimilars was updated in May 2016 when just one biosimilar therapy had been approved for the treatment of a rheumatic disease. The FDA has since approved five more biosimilars to treat various rheumatic diseases and issued guidance documents that provide more details on how biosimilars will be implemented in the U.S.

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“With the regulatory landscape rapidly changing, we felt now was an appropriate time to revisit our 2016 statement to ensure it outlines all aspects of biosimilar adoption we would like to see addressed as these drugs become available on the market,” says ACR President David Daikh, MD, PhD.

The Position Statement
The majority of provisions outlined in the 2016 statement remained unchanged, but the new statement includes expanded views on the use of extrapolation during biosimilar approvals. Extrapolation would allow the FDA to simultaneously approve a biosimilar for all indications of its reference drug instead of requiring individual clinical studies for each indication. The position statement recommends that extrapolation be pursued with caution, with a contingency that regulatory agencies and manufacturers work with clinical experts without conflicts of interest to identify a minimum slate of disease states in which biosimilars should be tested before extrapolation to additional indications is granted.

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The statement makes clear that the decision to substitute a biosimilar product for a reference drug should be made only by the prescribing provider: “Providers must retain the right to write ‘dispense as written’ for all prescriptions, including biologics.”

To address safety concerns, the statement reinforces the white paper’s call for postmarketing surveillance studies in children, as well as adults. It also states that the Best Pharmaceuticals for Children Act (BPCA), which reauthorizes the pediatric studies provision of FDA Modernization and Accountability Act to improve safety and efficacy of pharmaceuticals for children, should apply to biosimilars.

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Filed under:Biologics/DMARDsDrug Updates Tagged with:position statement

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