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In the present case control study mRNA expression of the GSTP1 gene, encoding a phase II enzyme that detoxifies via glutathione conjugation, was investigated using semiquantitative PCR followed by SSCP for 49 confirmed head and neck (HN) cancer and 49 control samples. It was found that GSTP1 was upregulated in significantly higher number of cancers (OR 4.2, 95% CI 1.2-15.3). Grade wise correlation was also observed with more up regulation in patients with more advanced grades of HN carcinomas.doi:10.7314/apjcp.2012.13.4.1683 fatcat:bw5ujbbpofdpxedciarn3poq4m