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We studied the prevalence and effects of host genetic polymorphisms for the three AIDS restriction genes (ARGs) namely CCR2-64I, SDF1-3'A and MCP1-2518 G/A for HIV infection and progression to AIDS using PCR-RFLP analysis on a total of 568 HIV seronegative serum samples collected from a specific high risk and young population hailing from the seven Northeastern states of India (n = 346), West Bengal (n = 96) and Gorkha population (n = 101). In addition, 181 HIV seropositive cases of which 92 inpatient cases in a large tertiary care hospital located at Kolkata were included in the study. HIV prevalence in our study group was 0.52 %. Four cases seroconverted, 25 cases progressed to AIDS and 05 died during the follow up period of 41 months. The genotype percentage of CCR2-64I, SDF1-3'A and MCP1-2518 G/A in the Northeastern states were 18.5, 40.3 and 54 % respectively in the seronegative population. Allele frequencies for SDF1-3'A in Northeastern states were significantly higher as compared to the Gorkha (21 %) and the North Indian population (24 %). Relative Hazard values were more than 0.9 for progression to AIDS and death. Kaplan-Meier survival analysis using Cox proportional regression model did not reveal any significant survival benefit (p value &lt;0.05) for any of the 3 ARGs individually or in combination either to seroconversion or disease progression. This is the first study on host genetic polymorphism amongst the Eastern, Northeastern and Gorkha regions in India. We are also the first to report the MCP1-2518 G/A polymorphism in India that is known to increase the rate of neuropsychological impairment (NPI) in AIDS patients.

indian journal of virology/indian journal of virology

The Distribution of CCR2-64I, SDF1-3′A and MCP1-2518 G/A Genes Polymorphism in a Specific High Risk Group from the Northeastern States West Bengal, and Gorkha Population in India