Abstract:
BACKGROUND:Leukaemia is a heterogeneous disease in which haematopoietic progenitor cells acquire genetic lesions that lead to a block in differentiation, increased self-renewal, and unregulated proliferation. The enzyme 5,10-methylenetetrahydrofolate reductase (MTHFR), involved in folate metabolism, plays a crucial role in cells because folate availability is important for DNA integrity. The aim of this case-control study was to evaluate the association of the C677T MTHFR gene polymorphism with acute myeloid leukaemia (AML), acute lymphoblastic leukaemia (ALL), chronic myeloid leukaemia (CML) and chronic lymphocytic leukaemia (CLL). MATERIALS AND METHODS:A total of 275 leukaemia cases - including AML (n = 112), ALL (n = 81), CML (n = 43), CLL (n = 39) - and 251 age/sex-matched healthy control individuals participated in this study. MTHFR C677T polymorphisms in the cases and controls were evaluated by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP). RESULTS:The average MTHFR 677CC, 677CT, 677TT genotype frequencies of total leukaemia cases were 68.73%, 19.64%, and 11.64% in cases, and 71.71%, 24.30%, and 3.98% in healthy controls, respectively. The average frequency of the MTHFR 677T allele was 21.45% among the cases compared to 16.13% among the controls. CONCLUSIONS:In the present case-control study we have observed a higher frequency of the MTHFR 677TT genotype in cases of leukaemia (AML, ALL, CML and CLL) as compared with controls; this might be due to ethnic and geographic variation. As per our findings, although the frequency of the MTHFR 677T allele is moderately high in AML, ALL and CLL, no statistically significant association was found; on the other hand statistically significant association was found in the context of CML cases.
journal_name
Cancer Epidemioljournal_title
Cancer epidemiologyauthors
Hussain SR,Naqvi H,Raza ST,Ahmed F,Babu SG,Kumar A,Zaidi ZH,Mahdi Fdoi
10.1016/j.canep.2012.02.008subject
Has Abstractpub_date
2012-08-01 00:00:00pages
e227-31issue
4eissn
1877-7821issn
1877-783Xpii
S1877-7821(12)00030-6journal_volume
36pub_type
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