Despite mostly positive data from the ongoing phase III study of Talaris Therapeutics Inc.’s lead asset, FCR-001, an allogeneic cell therapy for treating living donor kidney transplant patients, investors are stepping away. The Boston and Louisville, Ky.-based company’s stock took a hit June 20 as shares (NASDAQ:TALS) fell 36.7% to $4.51 each.

The U.S. FDA has put five phase III studies of Sanofi SA’s potential multiple sclerosis and myasthenia gravis blockbuster tolebrutinib on partial clinical hold after several cases of liver injury were identified after exposure to the drug. Sanofi said new recruitment in the U.S. is paused and participants who have been part of the trial for fewer than 60 days should stop taking tolebrutinib, although those taking the drug for longer can continue.

Mirobio Ltd. is poised to take two checkpoint agonists into the clinic in the treatment of autoimmune diseases, after closing a $97 million series B round. The most advanced program, MB-272, is an agonist of the B and T lymphocyte attenuator receptor that relays inhibitory signals to suppress the immune response. Mirobio says activating it has a “far reaching” regulatory effect, restoring self-tolerance across several major autoimmune diseases, including lupus.

Priovant Therapeutics Inc. is the newest of the Vants, a creature of Roivant Sciences Ltd., of Basel, Switzerland and Pfizer Inc. Established in September 2021, Priovant is developing brepocitinib, a tyrosine kinase 2 and JAK1 inhibitor for treating multiple highly inflammatory autoimmune diseases.