Less than three months after granting interchangeable status to a biosimilar for the first time, the FDA has approved that status for a second biosimilar, Boehringer Ingelheim Pharmaceuticals, Inc.’s Cyltezo (adalimumab-adbm). It and multiple other biosimilars of AbbVie Inc.’s Humira (adalimumab) are slated to come onto the U.S. market in 2023, but plans should be preparing now for the drugs’ launches, say industry experts. Still, a handful of factors could pose an issue with the agents’ taking market share from the reference product.

On Oct. 15, 2021, the FDA granted interchangeability status to Cyltezo for all of its approved uses. Boehringer Ingelheim’s Phase III VOLTAIRE-X clinical trial found no meaningful clinical differences in pharmacokinetics, efficacy, immunogenicity and safety over multiple switches between Humira and Cyltezo. Per the Biologics Price Competition and Innovation Act (BPCIA) of 2009, the drug will have one year of exclusivity upon launch during which the FDA cannot grant interchangeable status to another Humira biosimilar.