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Article in Chinese | WPRIM | ID: wpr-816777

ABSTRACT

@# Objective: To investigate the correlations between single nucleotide polymorphisms (SNPs) in the D-loop of mitochondrial DNA (mtDNA) and the disease risk as well as the prognosis of diffuse large B cell lymphoma (DLBCL). Methods: Blood samples from 108 DLBCL patients treated at the Department of Hematology of the Fourth Hospital of Heibei Medical University during July, 1991 and July 2012 were collected for this study; in addition, blood samples from 159 healthy controls during the same period were also collected. DNA was extracted according to the standard protocols for PCR amplification and SNP locus genotype analyses. The risk of D-loop SNPs was investigated by case-control study. Results: The minor alleles of nucleotides 73A/G, 263A/G, 315C/C insert were associated with a decreased risk for DLBCL. The minor allele of the nucleotides 200G/Awas associated with an increased risk for DLBCL. To further evaluate the predictive function of D-loop SNPs in DLBCL patients, five SNP sites were identified by Log-Rank test that with statistically significant prediction value of DLBCL survival in a univariate analysis. In a multivariate analysis, allele 16304 was identified as an independent predictor of DLBCL prognosis. The survival time of DLBCL patients with 16304C was significantly shorter than that of patients with 16304T (RR=0.513, 95% CI=0.266-0.989, P<0.05). Conclusion: The analysis of D-loop SNPs in mtDNA can help identifying the occurrence risks and poor prognosis subtypes of DLBCL.

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