Kyverna to Reveal Registrational KYSA-8 Trial Results in Stiff Person Syndrome and Phase 2 KYSA-6 Myasthenia Gravis Data at AAN

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Kyverna Therapeutics will present primary analysis from the KYSA-8 registrational trial in stiff person syndrome at AAN 2026, showing statistically significant benefits across all primary and secondary endpoints. The company will also disclose updated Phase 2 KYSA-6 results for its CD19 CAR T-cell therapy in generalized myasthenia gravis.

1. AAN Presentations Announced

Kyverna Therapeutics has secured four presentations at the American Academy of Neurology Annual Meeting April 18–22, 2026 in Chicago, including two late-breaking oral sessions and two poster sessions. Oral presentations will feature primary analysis from the pivotal KYSA-8 trial and updated Phase 2 data from KYSA-6.

2. KYSA-8 Registrational Trial Findings

The KYSA-8 multicenter Phase 2 registrational trial in stiff person syndrome demonstrated statistically significant improvements across all primary and secondary endpoints, including reversal of progressive disability. These topline results build on previous positive data and support miv-cel’s potential as a first-in-class therapy for this rare autoimmune disorder.

3. Updated Phase 2 KYSA-6 Data

The open-label, single-arm Phase 2 portion of the KYSA-6 trial in generalized myasthenia gravis will present updated efficacy and safety data for the CD19-targeting CAR T-cell therapy. The analysis aims to show durable, drug-free remission potential following a single administration of miv-cel.

4. Future Development and Trial Design

Poster sessions will cover a real-world natural history study on timed 25-foot walk outcomes in stiff person syndrome and the design of a global, randomized Phase 3 study comparing KYV-101 to standard-of-care immunosuppression in myasthenia gravis. These programs outline the strategic path toward regulatory submission and broader clinical adoption.

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