414 Enhancing T cell therapy for patients with relapsed/refractory Wilms tumor by Emily Reynolds, Catherine Bollard, Amy Hont, Conrad Cruz, Maja Stanojevic, Robert Ulrey, Madeline Terpilowski, Fahmida Hoq, Maria Fortiz, Haili Lang, Jeffrey Dome, Patrick Hanley, Holly Meany

612 Lymphodepletion blunts the antigen-spreading response post TAA-T cell therapy for pediatric solid tumors by Catherine M Bollard, Conrad Cruz, Fahmida Hoq, Haili Lang, Amy B Hont, Naomi Field, Samantha Murphy, Patrick J Hanley, Chase D McCann, Anushree Datar, Rachel DiCioccio, Holly J Meany