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Organon wins US approval to widen use of arthritis biosimilar drug

By Thomson Reuters Jun 10, 2026 | 7:44 AM

June 10 (Reuters) – Organon said on Wednesday the U.S. Food and Drug Administration has approved the expanded use of its arthritis ​drug, a biosimilar to Roche’s Actemra, ‌to treat a life‑threatening immune reaction in some cancer patients and COVID-19 in patients needing breathing support.

Here are a few details:

• The FDA approval expands use of its ‌biosimilar, ​Tofidence, to treat severe ⁠or life‑threatening cytokine release ⁠syndrome in some cancer patients and for COVID‑19 patients who are receiving oxygen or breathing support and systemic corticosteroids.

• In cytokine release syndrome, ​the body releases excessive inflammatory proteins.

• Organon said Tofidence can now be used in ⁠adults and children aged two ⁠years and older for both conditions.

• ​The drug is a biosimilar, meaning it is ​a close copy of Roche’s Actemra used to ‌treat types of arthritis, for which Tofidence is also approved.

• “In the U.S., biosimilar adoption may help reduce the affordability burden of high-cost brand ⁠biologics on the health care system,” said Jon Martin, U.S. commercial lead, biosimilars and established brands, at Organon.

• ⁠Organon said ‌Tofidence was approved by the ⁠FDA in 2023 as the first ​U.S. biosimilar ‌to Actemra.

• In April, India’s ​Sun Pharmaceutical ⁠Industries said it will buy Organon in an all-cash deal valued at about $11.75 billion including debt, in the largest overseas acquisition by an Indian pharmaceutical company.

(Reporting by Sahil Pandey in Bengaluru; Editing by ​Sahal Muhammed)