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Kondo T, Tasaka T, Shimizu R, Hayashi K, Yamada S, Fukuda H, Hirose T, Takeuchi A, Sano F, Tokunaga H, Matsuhashi Y, Wada H. Jumping translocations of 1q in donor cell-derived myelodysplastic syndrome after cord blood transplantation: Case report and review of the literature. Mol Clin Oncol 2020; 12:365-373. [PMID: 32190321 DOI: 10.3892/mco.2020.1995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 07/03/2019] [Indexed: 11/06/2022] Open
Abstract
Donor cell-derived leukemia and myelodysplastic syndrome (DCL) is a rare complication in patients after allogenic stem cell transplantation (SCT). Since 1971, numerous cases of DCL have been reported, but the detailed mechanisms of DCL are still unclear. A patient with jumping translocations (JTs) of 1q in umbilical cord blood donor cell-derived myelodysplastic syndrome (MDS), which likely occurred due to genetic alterations of TET2 and ASXL1 after cord blood transplantation (CBT), was examined in this study. Previously reported DCL cases after CBT that focused on the cytogenetic and molecular characteristics of these patients and patient outcome were reviewed. A total of 30 cases of DCL after CBT were identified between 2005 and 2018. The median time from CBT to the development of DCL was 16 months. The number of patients with DCL who were diagnosed with acute myeloid leukemia (AML) and MDS was 19 and 8, respectively. JTs were frequently observed in 5 of 27 DCL patients who had cytogenetic abnormalities, including our patient. Molecular abnormalities were described in 7 of the cases, and the most frequent abnormality was an NPM1 mutation. Other gene mutations that were usually found in de novo MDS or AML were observed in JT-DCL after CBT. From these results, chromosomal abnormalities such as JTs that occur subsequent to genetic alterations were seemed an important mechanisms underlying DCL onset in patients after CBT. Further molecular analyses regarding the genetic alterations of JTs are required to understand the pathogenesis of umbilical cord blood-derived JT-DCL.
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Affiliation(s)
- Toshinori Kondo
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Taizo Tasaka
- Department of Transfusion Medicine and Cell Therapy, Saitama Medical Center, Saitama Medical University, Kawagoe, Saitama 350-8550, Japan
| | - Risa Shimizu
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Kiyohito Hayashi
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Seiko Yamada
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Hirofumi Fukuda
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Tadashi Hirose
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Asako Takeuchi
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Fuminori Sano
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Hirotoshi Tokunaga
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Yoshiko Matsuhashi
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Hideho Wada
- Department of Hematology, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
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