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Jpn J Cancer Res. 1991 Mar;82(3):254-6.

Association between restriction fragment length polymorphism of the human cytochrome P450IIE1 gene and susceptibility to lung cancer.

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Department of Cancer Chemotherapy and Prevention, Tohoku University, Sendai.


Cytochrome P450IIE1 (P450IIE1) is involved in metabolic activation of carcinogenic nitrosamines, aniline and benzene. We detected a restriction fragment length polymorphism of the human P450IIE1 gene with the restriction endonuclease DraI. The population was thus divided into three genotypes, namely, heterozygotes (CD) and two forms of homozygotes (CC and DD). The distribution of these genotypes among lung cancer patients differed from that among controls with statistical significance of P less than 0.05 (chi 2 = 7.01 with 2 degrees of freedom). This result strongly suggests that host susceptibility to lung cancer is associated with the DraI polymorphism of the P450IIE1 gene.

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