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A Living Drug Could Be First Treatment for Stiff Person Syndrome

Science News 22 October 2026 3 min read

โฎ BeforeStiff person syndrome has no approved treatment specifically for it.
โœ… NowA CAR T cell therapy is awaiting FDA approval as a possible first treatment.

In short

  • Kyverna Therapeutics has a CAR T cell therapy under FDA review.
  • If approved, it would be the first treatment for stiff person syndrome.
  • The therapy is a living drug built from a patient's own immune cells.

Why the Good News Desk likes this one

Stiff person syndrome is a rare autoimmune disease with few approved treatments. CAR T therapy reprograms a patient's own immune cells to target the cause. The source says approval is still pending, so the path to patients is not yet confirmed.

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From Science News

If given the green light by the FDA, a CAR T cell therapy from Kyverna Therapeutics would be the first approved treatment for stiff person syndrome.

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