P404: IMMUNOGLOBULIN GENE REARRANGEMENT IN KOREAN PATIENTS WITH B-LYMPHOBLASTIC LEUKEMIA – AN IMMUNOPHENOTYPE AND REPERTOIRE ANALYSIS - Daehyun Chu; Miyoung Kim; Young-Uk Cho; Sang-Hyun Hwang; Seongsoo Jang; Eul-Ju Seo; Chan-Jeoung Park; Han-Seung Park; Jung-Hee Lee; Sung Han Kang; Hyery Kim; Kyung-Nam Koh; et al. (HemaSphere, 2023)