Biosimilars: New guidance from FDA to help manufacturers develop more treatment options

By: Leah Christl, Ph.D.

FDA has taken important new steps to continue to help manufacturers develop biologic products called biosimilars. Biosimilars are highly similar to, and have no clinically meaningful differences from, an already approved biological product. Biosimilars can provide more treatment options for patients, and possibly lower treatment costs.

Leah ChristlIn early March, FDA approved the first biosimilar, Zarxio (filgrastim-sndz), a biosimilar to Neupogen (filgrastim), used to help stimulate growth of white blood cells in patients with cancer and help them fight infection.

That’s a great start and we are pleased to see the progress. Manufacturers are working hard to develop more biosimilars for the U.S. market. By nature, biologic products are highly complex molecules, so developing biosimilar versions of these products is challenging. FDA is also working hard to help those manufacturers bring more biosimilars to the market.

Over the past few weeks, we have released four guidances for industry — useful tools to help manufacturers navigate the new terrain of biosimilar development.

  • One assists companies in demonstrating that a proposed product is indeed biosimilar to an existing biologic product, and is intended to provide clarity to manufacturers about the expectations for a biosimilar development program.
  • A second focuses on the analytical studies that demonstrate that the product is “highly similar” to an existing biological product, which supports the demonstration of biosimilarity.
  • A third guidance answers common questions about the biosimilar development and application process and contains information intended to provide a better understanding of the law that allows biosimilars development. 
  • A fourth, still in draft form — which means we are accepting public comment — answers a variety of additional questions that have arisen regarding the biosimilars development process.

Each of these guidances was developed to help industry more efficiently and effectively develop new biosimilars for patients in need.

Many of our most important, but also expensive, drugs are biological products. These products are used to treat patients who have a variety of serious and life-threatening medical conditions including rheumatoid arthritis, psoriasis, diabetes, and cancer.

Having more approved biosimilars is good for public health. FDA looks forward to continuing to help manufacturers develop these important products.

Leah Christl, Ph.D., is FDA’s Associate Director for Biosimilars, Office of New Drugs, Center for Drug Evaluation and Research

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