TY - JOUR
T1 - Detection of UGT1A10 polymorphisms and their association with orolaryngeal carcinoma risk
AU - Elahi, Abul
AU - Bendaly, Jean
AU - Zheng, Zhong
AU - Muscat, Joshua E.
AU - Richie, John P.
AU - Schantz, Stimson P.
AU - Lazarus, Philip
PY - 2003/8/15
Y1 - 2003/8/15
N2 - BACKGROUND. UGT1A10 exhibits glucuronidating activity against metabolites of the tobacco smoke carcinogen, benzo(a)pyrene, and is expressed highly in numerous target tissues for tobacco-related cancers including the upper aerodigestive tract. The current study was conducted to determine the prevalence of genetic polymorphisms in the UGT1A10-specific region of the UDP-glucuronosyltransferase family 1A locus and their relationship with risk for orolaryngeal carcinoma. METHODS. The authors analyzed UGT1A10-specific sequences in a population of black, white, and Asian individuals. Ten UGT1A10 alleles were identified by direct sequencing of UGT1A10 sequences amplified by polymerase chain reaction (PCR) using DNA purified from buccal cell swabs that were taken from individual subjects. RESULTS. In addition to three silent polymorphisms, three missense polymorphisms were found at codons 139 (Glu > Lys), 240 (Thr > Met), and 244 (Leu > Ile). Using PCR-restriction fragment length polymorphism analysis of buccal cell DNA, the prevalence of the UGT1A10240Met variant was less than 0.01% in whites and blacks. Similarly, the prevalence of both the UGT1A10139Lys and UGT1A10244Ile variants was less than 0.01% in whites but it was significantly higher (0.04 and 0.05, respectively, P < 0.01) in blacks. None of the missense UGT1A10 variants were found in any of the Asian individuals examined. In a case-control study of black individuals, a significant association with orolaryngeal carcinoma risk was found in persons with at least 1 UGT1A10139Lys allele (crude odds ratio, 0.29 [95% confidence interval, 0.10-0.81]; adjusted odds ratio, 0.20 [95% confidence interval, 0.05-0.87]). No association was observed for the codon 244 (Leu > Ile) polymorphism. CONCLUSIONS. The data from the current study show that the UGT1A10 gene has several low-frequency missense polymorphisms and that the codon 139 polymorphism is an independent risk factor for orolaryngeal carcinoma in blacks.
AB - BACKGROUND. UGT1A10 exhibits glucuronidating activity against metabolites of the tobacco smoke carcinogen, benzo(a)pyrene, and is expressed highly in numerous target tissues for tobacco-related cancers including the upper aerodigestive tract. The current study was conducted to determine the prevalence of genetic polymorphisms in the UGT1A10-specific region of the UDP-glucuronosyltransferase family 1A locus and their relationship with risk for orolaryngeal carcinoma. METHODS. The authors analyzed UGT1A10-specific sequences in a population of black, white, and Asian individuals. Ten UGT1A10 alleles were identified by direct sequencing of UGT1A10 sequences amplified by polymerase chain reaction (PCR) using DNA purified from buccal cell swabs that were taken from individual subjects. RESULTS. In addition to three silent polymorphisms, three missense polymorphisms were found at codons 139 (Glu > Lys), 240 (Thr > Met), and 244 (Leu > Ile). Using PCR-restriction fragment length polymorphism analysis of buccal cell DNA, the prevalence of the UGT1A10240Met variant was less than 0.01% in whites and blacks. Similarly, the prevalence of both the UGT1A10139Lys and UGT1A10244Ile variants was less than 0.01% in whites but it was significantly higher (0.04 and 0.05, respectively, P < 0.01) in blacks. None of the missense UGT1A10 variants were found in any of the Asian individuals examined. In a case-control study of black individuals, a significant association with orolaryngeal carcinoma risk was found in persons with at least 1 UGT1A10139Lys allele (crude odds ratio, 0.29 [95% confidence interval, 0.10-0.81]; adjusted odds ratio, 0.20 [95% confidence interval, 0.05-0.87]). No association was observed for the codon 244 (Leu > Ile) polymorphism. CONCLUSIONS. The data from the current study show that the UGT1A10 gene has several low-frequency missense polymorphisms and that the codon 139 polymorphism is an independent risk factor for orolaryngeal carcinoma in blacks.
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U2 - 10.1002/cncr.11587
DO - 10.1002/cncr.11587
M3 - Article
C2 - 12910533
AN - SCOPUS:0042071532
SN - 0008-543X
VL - 98
SP - 872
EP - 880
JO - Cancer
JF - Cancer
IS - 4
ER -