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Background  Telomere genetics has recently been emerged as an important field in molecular oncology. Various genome-wide association studies in different population groups have revealed that polymorphisms in Telomere maintenance gene ( TERT ) gene located on 5p15.33 is associated with susceptibility to leukemia and lung cancer risk. However, association of  TERT  with leukemia and lung cancer risk in north Indian population groups is still unknown. This study observed the association between genetic variant rs2853677 of  TERT  and leukemia and lung cancer in the state of Jammu and Kashmir, India.    Methods  A total of 781 subjects, out of which 381 cases (203 leukemic patients and 178 non-small cell lung cancer patients NSCLC) and 400 healthy controls were recruited for the study. Genetic variant rs2853677of  TERT  was detected using the real-time and Taqman Chemistry. Hardy-Weinberg Equilibrium was assessed using the chi square test. The allele and genotype- specific risks were estimated as odds ratio with 95% confidence interval.    Results  We observed that variant rs2853677 was strongly associated with lung cancer and leukemia risk with an odds ratio (OR) =1.8 (1.03–3.2 at 95% CI);  p  value (adjusted) = 0.03; odds ratio (OR) =2.9 (1.4–5.5.at 95% CI); p value (adjusted) = 0.002, respectively.    Conclusion  The results of this study suggested that rs2853677 of  TERT  signifies association in multiple cancers and suggests that it can become potential marker for diagnosis of non-small cell lung cancer and leukemia. The study will provide an insight in understanding the genetic etiology and highlights the role of telomere-associated pathways in non-small cell lung cancer and leukemia. However, it would be quite interesting to explore the contribution of this variant in other cancers as well.    Electronic supplementary material  The online version of this article (10.1186/s12885-019-5685-2) contains supplementary material, which is available to authorized users.

bmc cancer

Association of newly identified genetic variant rs2853677 of TERT with non-small cell lung cancer and leukemia in population of Jammu and Kashmir, India