345 Prophylactic Tocilizumab Decreases Incidence of Acute Graft-Versus-Host Disease Following Alpha/Beta T-Cell Depleted Haploidentical Hematopoietic Stem Cell Transplantation in Children and Young Adults.

Soohee Cho, Christopher C. Dvorak, Christine S. Higham, Gabriel Salinas Cisneros, Julia Chu, Alexis Melton, Lena E. Winestone, Kristin A. Shimano, Jasmeen Dara, Michelle Hermiston, James N. Huang, Janel Renee Long-Boyle, Sandhya Kharbanda