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BCL2 gene polymorphism could predict the treatment outcomes in acute myeloid leukemia patients.

Authors: Moon, JH  Sohn, SK  Lee, MH  Jang, JH  Kim, K  Jung, CW  Kim, DH 
Citation: Moon JH, etal., Leuk Res. 2010 Feb;34(2):166-72. doi: 10.1016/j.leukres.2009.05.009. Epub 2009 Jun 10.
Pubmed: (View Article at PubMed) PMID:19520430
DOI: Full-text: DOI:10.1016/j.leukres.2009.05.009

The Bcl-2 protein inhibits apoptosis (programmed cell death) of hematopoietic stem cells induced by a variety of noxious stimuli, thus mediating chemoresistance and decreasing chemosensitivity. Higher Bcl-2 expression correlates to an adverse outcome following therapy for acute myeloid leukemia (AML). The current study determined whether a BCL2 gene single nucleotide polymorphism (SNP) could affect treatment outcomes in 99 AML patients excluding acute promyelocytic leukemia. Two genotypes were tested, including BCL2 -938 C>A (rs2279115) and +21 A>G (rs1801018). Neither the -938 C>A nor the +21 A>G BLC2 genotype was associated with complete remission (CR) rates following chemotherapy. The -938 A>C BCL2 genotype did not affect leukemia-free survival (LFS), event-free survival (EFS) or overall survival (OS). However, of interest, the BCL2 +21 A>G genotype correlated with LFS, EFS and OS: The group with the +21 AA genotype had a significantly longer median LFS (p<0.001) or EFS (p=0.004), and OS (p=0.04). The multivariate analyses confirmed that this BCL2 gene SNP is an independent prognostic factor for LFS (p=0.05, HR 1.83, 95% C.I. [1.02-3.45]) and EFS (p=0.02, HR 3.13 [1.34-6.43]), but not for OS (p=0.1). This data suggests the involvement of a Bcl-2-mediated mechanism in the development of chemoresistance in AML.


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RGD Object Information
RGD ID: 11526111
Created: 2016-08-09
Species: All species
Last Modified: 2016-08-09
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.