 SOUTH SAN FRANCISCO, Calif., Oct. 07, 2021 GLOBE NEWSWIRE -- Allogene Therapeutics, Inc. Nasdaq: ALLO, a clinical-stage biotechnology company pioneering the development of allogeneic CAR T AlloCAR TTM therapies for cancer, today reported that following a report of a chromosomal abnormality in ALLO-501A CAR T cells in a patient treated in the ALPHA2 study, the U.S. Food and Drug Administration FDA has placed a hold on the Companys AlloCAR T clinical trials. 