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Clinical and Genomic Profiles of Korean Patients with MECOM Rearrangement and the t(3;21)(q26.2;q22.1) Translocation
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- Authors
- Issue Date
- 2022-09
- Publisher
- 대한진단검사의학회
- Citation
- Annals of Laboratory Medicine, Vol.42 No.5, pp.590-596
- Abstract
- The translocation (3;21)(q26.2;q22.1) is a unique cytogenetic aberration that characterizes acute myeloid leukemia with myelodysplasia-related changes (AML-MRC) in patients with AML and myelodysplastic syndrome (MDS) or a therapy-related myeloid neoplasm. Using multigene target sequencing and FISH, we investigated the clinical and genomic profiles of patients with t(3;21) over the past 10 years. The frequency of t(3;21) among myeloid malignancies was very low (0.2%). Half of the patients had a history of cancer treatment and the remaining patients had de novo MDS. Twenty-one somatic variants were detected in patients with t(3;21), including in CBL, GATA2, and SF3B1. Recurrent variants in RUNX1 (c.1184A>C, p.Glu395Ala) at the same site were detected in two patients. None of the patients with t(3;21) harbored germline predisposition mutations for myeloid neoplasms. MECOM rearrangement was detected at a higher rate using FISH than using G-banding, suggesting that FISH is preferable for monitoring. Although survival of patients with t(3;21) is reportedly poor, the survival of patients with t(3;21) in this study was not poor when compared with that of other AML patients in Korea.
- ISSN
- 2234-3806
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