PMID- 37597110 OWN - NLM STAT- Publisher LR - 20231011 IS - 1432-0584 (Electronic) IS - 0939-5555 (Linking) VI - 102 IP - 11 DP - 2023 Nov TI - Dominant-negative type of IKZF1 deletion showed a favorable prognosis in adult B-cell acute lymphoblastic leukemia. PG - 3103-3113 LID - 10.1007/s00277-023-05405-0 [doi] AB - IKZF1 deletion is a recurrent genomic alteration in B-cell acute lymphoblastic leukemia (B-ALL) and is divided into dominant-negative (DN) and loss of function (LOF) deletions. The prognostic impact of each deletion has not been fully elucidated. We retrospectively analyzed 117 patients with adult B-ALL including 60 patients with BCR::ABL1-positive B-ALL and 57 patients with BCR::ABL1-negative B-ALL by the fluorescence in situ hybridization (FISH) method for IKZF1 deletion and multiplex PCR for the 4 most common IKZF1 deletions (∆4-7, ∆2-7, ∆2-8, and ∆4-8). Samples, in which IKZF1 deletion was detected by FISH but a specific type of deletion was not identified by the PCR, were categorized as "other." Patients were classified into a DN group that had at least 1 allele of ∆4-7 (n = 23), LOF and other group (n = 40), and wildtype group (n = 54). DN type IKZF1 deletions were found in 33.3% of BCR::ABL1-positive cases and 5.2% of BCR::ABL1-negative cases. LOF and other type IKZF1 deletions were found in 43.4% of BCR::ABL1-positive cases and 24.6% of BCR::ABL1-negative cases. Patients with the DN group showed significantly higher overall survival (OS) than that of the LOF and other and WT groups (P = 0.011). Multivariate analysis including age, WBC counts, complex karyotype, and DN type IKZF1 deletion showed that the DN type of IKZF1 deletion (HR = 0.22, P = 0.013) had a positive impact and age >/= 65 (HR = 1.92, P = 0.029) had a negative impact on OS. The prognostic impact of IKZF1 deletion depends on the type of deletion and DN type of IKZF1 deletion showed better prognosis in adult B-ALL patients.Clinical trial registration This study was part of a prospective observational study (Hokkaido Leukemia Net, UMIN000048611). It was conducted in compliance with ethical principles based on the Helsinki Declaration and was approved by the institutional review board of Hokkaido University Hospital (#015-0344). CI - (c) 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. FAU - Kimura, Hiroyuki AU - Kimura H AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Onozawa, Masahiro AU - Onozawa M AUID- ORCID: 0000-0001-9267-2864 AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. onozawa@med.hokudai.ac.jp. FAU - Yoshida, Shota AU - Yoshida S AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Miyashita, Naoki AU - Miyashita N AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Yokoyama, Shota AU - Yokoyama S AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Matsukawa, Toshihiro AU - Matsukawa T AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Hirabayashi, Shinsuke AU - Hirabayashi S AD - Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan. FAU - Goto, Hideki AU - Goto H AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. AD - Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. FAU - Endo, Tomoyuki AU - Endo T AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. FAU - Oguri, Satoshi AU - Oguri S AD - Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. FAU - Fujisawa, Shinichi AU - Fujisawa S AD - Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. FAU - Mori, Akio AU - Mori A AD - Blood Disorders Center, Aiiku Hospital, Sapporo, Japan. FAU - Kondo, Takeshi AU - Kondo T AD - Blood Disorders Center, Aiiku Hospital, Sapporo, Japan. FAU - Hidaka, Daisuke AU - Hidaka D AD - Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan. FAU - Okada, Kohei AU - Okada K AD - Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan. FAU - Ota, Shuichi AU - Ota S AD - Department of Hematology, Sapporo Hokuyu Hospital, Sapporo, Japan. FAU - Kakinoki, Yasutaka AU - Kakinoki Y AD - Department of Hematology, Asahikawa City Hospital, Asahikawa, Japan. FAU - Tsutsumi, Yutaka AU - Tsutsumi Y AD - Department of Hematology, Hakodate Municipal Hospital, Hakodate, Japan. FAU - Yamamoto, Satoshi AU - Yamamoto S AD - Department of Hematology, Sapporo City General Hospital, Sapporo, Japan. FAU - Miyagishima, Takuto AU - Miyagishima T AD - Department of Hematology, Kushiro Rosai Hospital, Kushiro, Japan. FAU - Hashiguchi, Junichi AU - Hashiguchi J AD - Department of Internal Medicine, Kitami Red Cross Hospital, Kitami, Japan. FAU - Nagashima, Takahiro AU - Nagashima T AD - Department of Internal Medicine, Kitami Red Cross Hospital, Kitami, Japan. FAU - Ibata, Makoto AU - Ibata M AD - Department of Hematology, Sapporo Kosei General Hospital, Sapporo, Japan. FAU - Wakasa, Kentaro AU - Wakasa K AD - Department of Hematology, Obihiro Kosei Hospital, Obihiro, Japan. FAU - Haseyama, Yoshihito AU - Haseyama Y AD - Department of Hematology, Tonan Hospital, Sapporo, Japan. FAU - Fujimoto, Katsuya AU - Fujimoto K AD - Department of Hematology, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan. FAU - Ishihara, Toshimichi AU - Ishihara T AD - Department of Hematology, Kin-Ikyo Chuo Hospital, Sapporo, Japan. FAU - Sakai, Hajime AU - Sakai H AD - Department of Hematology, Teine Keijinkai Hospital, Sapporo, Japan. FAU - Teshima, Takanori AU - Teshima T AD - Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, 0608638, Japan. AD - Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan. LA - eng GR - 16K09836/Japan Society for the Promotion of Science/ GR - 17K16174/Japan Society for the Promotion of Science/ PT - Journal Article DEP - 20230819 PL - Germany TA - Ann Hematol JT - Annals of hematology JID - 9107334 SB - IM OTO - NOTNLM OT - Acute lymphoblastic leukemia OT - Dominant-negative OT - Fluorescence in situ hybridization (FISH) OT - Hokkaido Leukemia Net (HLN) OT - IKAROS OT - IKZF1 deletion EDAT- 2023/08/19 20:42 MHDA- 2023/08/19 20:42 CRDT- 2023/08/19 11:07 PHST- 2023/05/06 00:00 [received] PHST- 2023/08/06 00:00 [accepted] PHST- 2023/08/19 20:42 [pubmed] PHST- 2023/08/19 20:42 [medline] PHST- 2023/08/19 11:07 [entrez] AID - 10.1007/s00277-023-05405-0 [pii] AID - 10.1007/s00277-023-05405-0 [doi] PST - ppublish SO - Ann Hematol. 2023 Nov;102(11):3103-3113. doi: 10.1007/s00277-023-05405-0. Epub 2023 Aug 19.