1075 Development of WTX-712, a conditionally active IL-21 INDUKINETM molecule for the treatment of cancer oleh Kyriakos Economides, Nesreen Ismail, Andres Salmeron, Jenna M Sullivan, Pam Aderhold, Heather R Brodkin, Celesztina Nagy-Domonkos, Daniel J Hicklin, Cynthia Seidel-Dugan, William M Winston