Genetic variants in HLA-DP/DQ contribute to risk of acute myeloid leukemia: A case-control study in Chinese

The effect of HLA-DP gene polymorphisms in Plasmodium Vivax-induced malaria susceptibility

Plasmodium vivax is the second most common Plasmodium parasite causing clinically serious symptoms and death from malaria. It is an important cause of morbidity and mortality, especially in Asia, the Middle East, and South America. Human leukocyte antigen molecules are responsible for presenting foreign antigens to T cells. Polymorphisms in HLA genes affect antigen presentation. HLA alleles involved in the presentation of P. vivax antigens affect the antibody response. The present study aimed to reveal the relationship of rs3077 and rs9277535 polymorphisms in HLA-DP genes with malaria caused by P. vivax for the first time in the worldwide. In the present research, rs3077 and rs9277535 polymorphisms were investigated in a case-control study of 124 patients with P. vivax-induced malaria and 211 healthy persons by using a real-time polymerase chain reaction (RT-PCR). The results showed that the G alleles of rs3077 and rs9277535 polymorphisms were detected as protective alleles, while the A alleles of both polymorphisms increase the risk of susceptibility to malaria disease. The results of the present study showed that both polymorphisms have a major effect on the susceptibility to malaria caused by P. vivax. We recommend that this study should be conducted in a different population with a larger sample size to confirm our results.

The Weight of HLA-DPA1 rs3077 Single Nucleotide Polymorphism in Prostate Cancer, a Multicenter Study

Prostate cancer (PCa) has almost the highest genetic transmission that mimics an autosomal dominance hereditary pattern of cancers in some families. Its incidence in Arab countries was reported to be steadily increasing. Aim. To determine the relevance of HLA-DPA1 rs3077 (A/G) SNP with prostate cancer's risk and/or severity. Subjects and Methods. Forty PCa patients and forty age matched patients with benign prostatic hyperplasia (BPH), as a control group, were enrolled in the study. Serum levels of urea, creatinine, total prostate-specific antigen (PSA), and free PSA were measured. PSA ratio was determined as well. Genotyping of HLA-DPA1 rs3077 (A/G) SNP was done using real-time PCR. Results. The measured lab parameters, except free PSA, were significantly higher among PCa patients in comparison to controls (P < 0.001 ^∗ ). Moreover, PSA ratio was significantly high among PCa patients (P < 0.001 ^∗ ). HLA-DPA1 rs3077 GG genotype was more frequent in PCa patients and the associated OR was 2.546 (P=0.059), while AA genotype was more frequent in the control group and the associated OR was 0.145 (P=0.081). Frequency of G allele was higher among PCa patients than the control group while A allele frequency was significantly decreased (P=0.034 ^∗ ) (protective allele). On multivariate analysis, there is no significant correlation found between HLA-DPA1 rs3077 SNP and PSA ratio (OR = 4.5, 95% CI = 1.2-17.4, P=0.856). Conclusion. HLA-DPA1 rs3077 G allele could be a risk factor for prostate cancer. However, HLA-DPA1 rs3077 SNP has no relation to PCa severity.