Relationship between Cytochrome P450 G1347A Gene Polymorphism and Risk of Ischemic Stroke in North Indian Population: A Case-Control Study

Objective: Present study was taken up to establish the association between CYP4F2 G1347A polymorphism and risk of ischemic stroke (IS) in a North Indian population. Methods: In a hospital-based case-control study, 250 cases and 250 age and sex matched control subjects were recruited from Outpatient Department of Neurology, All India Institute of Medical Sciences, New Delhi, India. Polymerase chain reaction – Restriction fragment length polymorphism (PCR-RFLP) was used for genotyping. Data were analyzed using STATA software, Version 13. Results: The mean age of IS patients were 52.83 ± 12.59 years and in control group were 50.97 ± 12.70 years. Genotypic frequency distributions were in accordance with Hardy Weinberg Equilibrium (HWE) in both cases and controls. Conditional logistic regression analysis showed an independent association between CYP450 G1347A gene polymorphism with the risk of IS under dominant model (OR 2.05; 95% CI 1.18 to 3.56). Analysis based on Trial of Org 10172 in Acute Stroke Treatment (TOAST) classification discerned a significant association with Large Vessel Disease (LVD) subtype of IS in both the unadjusted (OR, 2.5; 95% CI 1.49 to 4.20) and adjusted (OR, 3.32; 95% CI 1.72 to 6.43) analysis and a significant association with Small Vessel Disease (SVD) subtype of IS after the adjusted analysis (OR, 2.43; 95% CI 1.14 to 5.16) under recessive model. Conclusion: Present study suggests that CYP4F2 G1347A polymorphism may be an important risk factor for IS mainly for LVD subtype of IS. Prospective studies with large sample size are needed to confirm the present findings.