564 Potency-reduced and extended half-life IL12 heterodimeric Fc-fusions exhibit strong anti-tumor activity with potentially improved therapeutic index compared to native IL12 agen... by Ke Liu, Christine Bonzon, Seung Chu, Rumana Rashid, Umesh Muchhal, John Desjarlais, Matthew Bernett, Nicole Rodriguez, Nargess Hassanzadeh-Kiabi, Connie Ardila