Optimism rose for what could be the first CAR T therapy in autoimmune disease as Kyverna Therapeutics Inc. made public a positive primary analysis from its registrational trial, KYSA-8, of mivocabtagene autoleucel (miv-cel, KYV-101) in stiff-person syndrome. Kyverna plans to submit a BLA to the U.S. FDA in the first half of this year.