Abstract
Leukemia is a heterogeneous disorder, characterized by elevated proliferation of white blood cells. Various genetic studies have assessed the contributory roles of several single nucleotide polymorphisms with the development of leukemia. The role of genetic variation in the ARID5B and IKZF1 genes has previously been identified in various population groups; however, the role of these variants in the north Indian populations of Jammu and Kashmir is unknown. In this study, we explored the association of the newly identified genetic variants, rs10740055 of ARID5B and rs6964823 of IKZF1, with leukemic patients from Jammu and Kashmir of northern India. The variants were genotyped using TaqMan allele discrimination assays for 616 individuals (210 leukemic cases and 406 healthy controls). The association of each SNP with the disease was evaluated using logistic regression. It was observed that the variants rs6964823 (IKZF1) and rs10740055 (ARID5B) showed significant associations with odds ratio (OR) and p-values of 1.5 (1.0-2.3 at 95% confidence interval [CI]) and 0.04; and 2.5 (1.5-4.1 at 95% CI) and 0.0002, respectively. We also evaluated the cumulative effect for both the variants by combining the risk genotypes and obtained and OR of 4.9. It was found that the variants rs10740055 of ARID5B and rs6964823 of IKZF1 act individually and additively as risk factors in the development of leukemia in the populations of Jammu and Kashmir in Northern India.
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