FDA approves expanded use of Sanofi's type 1 diabetes drug (updated)

Sanofi SA

12/06/2026 23:21

Adds details and background throughout

    June 12 (Reuters) - The U.S. Food and Drug Administration said on Friday it has approved the expanded use of Sanofi's SASY.PA type 1 diabetes injection in children aged 8 to 17 years who were recently diagnosed with stage 3 of the condition.

    The FDA had first approved the drug, Tzield, in 2022 to delay the progression of type 1 diabetes from stage 2 to 3 in patients aged 8 years and older. Its label was expanded over time.
  

    In April, the regulator approved use of the drug to delay the progress to stage 3 in patients as young as one year.
  

    The latest label expansion allows use of the drug in children recently diagnosed with stage 3 of the condition, with the aim of slowing down loss of insulin production.
  

    Type 1 diabetes is a chronic condition in which the pancreas makes little or no insulin, with stage 3 patients experiencing symptoms such as frequent urination, excessive thirst and fatigue.

    Stage 3 patients usually require insulin therapy to manage these symptoms. 

    Tzield works by targeting the immune response that damages insulin-producing cells in the pancreas, helping preserve the body's own insulin production for longer.
  
The latest approval was based on a study of 328 children and teenagers who had been diagnosed within the past six weeks. Patients who received the drug had a smaller decline in insulin-producing cell function than those who received a placebo after about 18 months.
Tzield, however, has been under FDA scrutiny over safety concerns. The drug has a 'boxed warning', the FDA's most prominent safety warning, after reports of serious life-threatening cases of viral infections, including Epstein-Barr virus and cytomegalovirus.
 

 (Reporting by Kunal Das in Bengaluru; Editing by Leroy Leo)
 ((Kunal.Das2@thomsonreuters.com;))