Ph‐like gene alterations and complex chromosomal abnormalities are frequent in patients with acute lymphoblastic leukemia experiencing relapse after allogeneic hematopoietic cell transplantation. (22nd June 2022) - Tracy, Sean I.; Cao, Qing; Bachan, Ben; Meredith, Matthew; Oseth, LeAnn; Weisdorf, Daniel; Brunstein, Claudio; Hirsch, Betsy; Bachanova, Veronika