1147-A TNRX-257, a multifunctional LAG3 antagonist and conditional IL2Rϒ/ß partial agonist, is a novel immune stimulant with high dose tolerability in non-human primates by Rajesh Sharma, Margaret Karow, Stephen Demarest, Natasha Del Cid, Jianying Dong, Christina Carnevale, Christen Buetz, Glenn Capodagli, Jayd Hannah, Pricilla Walter