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Nurix says Sanofi discontinues autoimmune disease drug program

By Thomson Reuters Nov 3, 2026 | 3:33 PM

Nov 3 (Reuters) – Nurix Therapeutics said on Tuesday that Sanofi has decided to discontinue development of an experimental treatment for autoimmune and ​inflammatory diseases, eliminating potential future milestone payments ‌and royalties related to the program.

Shares of Nurix plunged 38% in extended trading.

Here are more details:

• The US biotech company said Sanofi had notified it of its decision ‌to ​stop the development of SAR448272, ⁠an oral drug candidate, ⁠after discontinuing an early-stage trial

• As a result, Nurix said it does not expect to receive any future development, regulatory or commercial milestone payments, ​or royalties associated with the treatment

• Sanofi did not immediately respond to Reuters’ request for ⁠comment

• Nurix added that it ⁠remains eligible for milestone payments and ​royalties from other drug candidates being developed under its ​collaboration agreement with Sanofi

• “While today’s news is ‌disappointing, Nurix remains in a strong position,” CEO Arthur Sands said in a statement, citing the company’s clinical-stage and preclinical pipeline

• Nurix said it had ⁠cash, cash equivalents and marketable securities of about $1.1 billion as of August 31, which it expects to fund ⁠operations into ‌the second half of 2029

• Under ⁠a collaboration signed in 2019, Nurix used ​its ‌targeted protein degradation platform to discover ​drug candidates ⁠for Sanofi

• In 2025, Sanofi expanded the partnership by licensing two programs that target transcription factors for autoimmune and inflammatory diseases, including the now-discontinued candidate, Nurix said

(Reporting by Siddhi Mahatole in Bengaluru; Editing by ​Leroy Leo)