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Celltrion Gains Expanded Indication Approval from FDA for its Actemra Biosimilar for CRS Therapy

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Key Takeaways

  • Tocilizumab-anoh (Avtozma) now approved for CRS, aligning with all indications of Genentech's Actemra in the U.S.
  • Initial approval of tocilizumab-anoh covered inflammatory conditions like rheumatoid arthritis and COVID-19.
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The additional approval expands the label for Avtozma (tocilizumab-anoh) to now include the treatment of cytokine release syndrome, which aligns the therapy with all indications for which Actemra is approved in the US.

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Editor's note: this story was originally published on PharmTech.com.

Celltrion announced on Aug. 6, 2025 that FDA has approved its application for an expanded indication of tocilizumab-anoh (brand name Avtozma), its intravenous (IV) therapy, to include the treatment of cytokine release syndrome (CRS) in adults and pediatric patients 2 years of age and older (1). Tocilizumab-anoh is a biosimilar to Actemra (tocilizumab), the originator biologic from Genentech, a member of the Roche Group. Actemra was originally approved by FDA in January 2010 (2).

With this additional approval from FDA for the CRS indication, Celltrion’s tocilizumab-anoh IV now aligns with all indications for which Genentech’s originator tocilizumab IV is approved in the United States. Tocilizumab-anoh in IV formulation originally received FDA approval in January 2025 for treating multiple inflammatory indications, including rheumatoid arthritis, giant cell arteritis, polyarticular juvenile idiopathic arthritis, systemic juvenile idiopathic arthritis, and coronavirus COVID-19 (3).

"We are proud that [Avtozma IV] has now achieved full indication alignment with the reference [Actemra IV]. This milestone marks an important step forward in our mission to deliver a safe and effective therapy for CRS," said Thomas Nusbickel, chief commercial officer at Celltrion USA, in a company press release (1). "This FDA approval expands access to high-quality biologics and supports beneficial patient outcomes across multiple therapeutic areas."

About CRS

CRS is a potentially life-threatening condition. It occurs when the immune system is highly activated, which leads to rapid and excessive release of cytokines into the bloodstream—a cytokine storm. During a cytokine storm, the overactivated immune system can lead to widespread inflammation and can cause damage to healthy tissue and organs throughout the body. Symptoms range from mild, flu-like symptoms to more severe complications, including low blood pressure, difficulty breathing, and multi-organ failure (4).

CRS is a recognized complication of certain T-cell-engaging (TCE) immunotherapies. Such therapies include chimeric antigen T-cell and bispecific therapies. CRS can occur from a severe infection, such as COVID-19. Multiple myeloma drugs that may cause CRS include:

  • idecabtagene vicleucel (brand name Abecma)
  • ciltacabtagene autoleucel (brand name Carvykti)

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