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Distinct clinical and biological characteristics of acute myeloid leukemia with higher expression of long noncoding RNA KIAA0125.

Abstract
Expression of long non-coding RNA KIAA0125 has been incorporated in various gene expression signatures for prognostic prediction in acute myeloid leukemia (AML) patients, yet its functions and clinical significance remain unclear. This study aimed to investigate the clinical and biological characteristics of AML bearing different levels of KIAA0125. We profiled KIAA0125 expression levels in bone marrow cells from 347 de novo AML patients and found higher KIAA0125 expression was closely associated with RUNX1 mutation, but inversely correlated with t(8;21) and t(15;17) karyotypes. Among the 227 patients who received standard chemotherapy, those with higher KIAA0125 expression had a lower complete remission rate, shorter overall survival (OS) and disease-free survival (DFS) than those with lower expression. The prognostic significance was validated in both TCGA and GSE12417 cohorts. Subgroup analyses showed that higher KIAA0125 expression also predicted shorter DFS and OS in patients with normal karyotype or non-M3 AML. In multivariable analysis, higher KIAA0125 expression remained an adverse risk factor independent of age, WBC counts, karyotypes, and mutation patterns. Bioinformatics analyses revealed that higher KIAA0125 expression was associated with hematopoietic and leukemic stem cell signatures and ATP-binding cassette transporters, two predisposing factors for chemoresistance.
AuthorsYu-Hung Wang, Chien-Chin Lin, Chia-Lang Hsu, Sheng-Yu Hung, Chi-Yuan Yao, Sze-Hwei Lee, Cheng-Hong Tsai, Hsin-An Hou, Wen-Chien Chou, Hwei-Fang Tien
JournalAnnals of hematology (Ann Hematol) Vol. 100 Issue 2 Pg. 487-498 (Feb 2021) ISSN: 1432-0584 [Electronic] Germany
PMID33225420 (Publication Type: Clinical Trial, Journal Article)
Chemical References
  • RNA, Long Noncoding
  • RNA, Neoplasm
Topics
  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Disease-Free Survival
  • Female
  • Gene Expression Regulation, Leukemic
  • Humans
  • Leukemia, Myeloid, Acute (drug therapy, metabolism, mortality)
  • Male
  • Middle Aged
  • RNA, Long Noncoding (biosynthesis)
  • RNA, Neoplasm (biosynthesis)
  • Survival Rate

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