title: N-acetyltransferase 1 and 2 gene sequence variants and risk of head and neck cancer.
abstract: Polymorphisms that alter the function of genes involved in the activation or detoxification of carcinogenic compounds can influence an individuals risk of developing cancer. Polymorphic changes modulating the acetylation capacity of the N-acetyltransferase (NAT) genes have been implicated in the risk of developing cancer. In this study the role of genetically determined individual NAT1 and NAT2 genotypes, haplotypes and haplotype combinations in the predisposition to head and neck cancer was investigated. Polymorphic regions of the NAT1 and NAT2 genes were analyzed in patients with head and neck cancer and healthy individuals by polymerase chain reaction-restriction fragment length polymorphism. Distribution of the genotypes, allele frequencies, diplotypes and haplotypes and correlation with clinical characteristics were evaluated. No association was observed between the NAT1*3, NAT1*10, NAT1*11, NAT2*5 and NAT2*6 genotypes and risk of head and neck cancer. The NAT2*7 slow genotype was associated with reduced risk of disease. A significant association was observed between the fast acetylator NAT2*4/NAT1*10 diplotype and risk of head and neck cancer. Combined haplotypes harboring the T1088A and C1095A variants characterizing the NAT1*10 allele were associated with increased risk. Our results suggest that NAT1 and NAT2 gene combinations may influence the risk of developing head and neck cancer.
authors.affiliation: Department of Basic Oncology, I.U. Oncology Institute, 34093, Capa, Istanbul, Turkey.
authors.forename: Semra
authors.initials: S
authors.lastname: Demokan
authors.forename: Yusufhan
authors.initials: Y
authors.lastname: Suoglu
authors.forename: Mustafa
authors.initials: M
authors.lastname: Gözeler
authors.forename: Deniz
authors.initials: D
authors.lastname: Demir
authors.forename: Nejat
authors.initials: N
authors.lastname: Dalay
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D001191:Arylamine N-Acetyltransferase / Q000235:genetics*; D001483:Base Sequence; D016022:Case-Control Studies; D002648:Child; D005260:Female; D020022:Genetic Predisposition to Disease; D006239:Haplotypes / Q000235:genetics; D006258:Head and Neck Neoplasms / Q000201:enzymology* / Q000235:genetics*; D006801:Humans; D007527:Isoenzymes / Q000235:genetics*; D015810:Linkage Disequilibrium / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009154:Mutation / Q000235:genetics*; D010641:Phenotype; D012307:Risk Factors; D055815:Young Adult
chemical_list: D007527:Isoenzymes; D001191:Arylamine N-Acetyltransferase; C089384:N-acetyltransferase 1; C478900:NAT2 protein, human