TY - JOUR
T1 - Genetic variation in the inhibin pathway and risk of testicular germ cell tumors
AU - Purdue, Mark P.
AU - Graubard, Barry I.
AU - Chanock, Stephen J.
AU - Rubertone, Mark V.
AU - Erickson, Ralph L.
AU - McGlynn, Katherine A.
PY - 2008/4/15
Y1 - 2008/4/15
N2 - Gene-knockout studies in mice suggest that INHA, encoding a subunit of gonadotropin-regulating proteins known as inhibins, is a tumor suppressor for testicular stromal cell tumors. It is not known whether genetic variation in the inhibin pathway also influences susceptibility to testicular germ cell tumors (TGCT), the most common testicular cancer in young men. To address this question, we conducted a case-control analysis (577 cases; 707 controls) of single-nucleotide polymorphisms (SNP) in genes in the inhibin pathway among participants in the U.S. Servicemen's Testicular Tumor Environmental and Endocrine Determinants Study. Thirty-eight tagging SNPs in six genes (INHA, INHBA, INHBB, INHBC, INHBE, and SMAD4) were genotyped. Odds ratios (OR) and 95% confidence intervals (CI) relating variant genotypes to TGCT risk were calculated using unconditional logistic regression. Among White subjects, an elevated risk of TGCT was observed for carriers of the T allele of the INHA variant rs2059693 (CT genotype: OR, 1.33; 95% CI, 1.04-1.71; TT: OR, 1.60; 95% CI, 1.01-2.52; Ptrend = 0.008). The association with rs2059693 was stronger for nonseminomas, and for teratomas and teratocarcinomas in particular (N = 58; CT: OR, 1.63; 95% CI, 0.89-2.99; TT: OR, 4.54; 95% CI 2.00-10.3; P trend = 0.0008). We found no evidence of association with variants in the other investigated genes. These findings suggest that genetic variation in the INHA locus influences TGCT development.
AB - Gene-knockout studies in mice suggest that INHA, encoding a subunit of gonadotropin-regulating proteins known as inhibins, is a tumor suppressor for testicular stromal cell tumors. It is not known whether genetic variation in the inhibin pathway also influences susceptibility to testicular germ cell tumors (TGCT), the most common testicular cancer in young men. To address this question, we conducted a case-control analysis (577 cases; 707 controls) of single-nucleotide polymorphisms (SNP) in genes in the inhibin pathway among participants in the U.S. Servicemen's Testicular Tumor Environmental and Endocrine Determinants Study. Thirty-eight tagging SNPs in six genes (INHA, INHBA, INHBB, INHBC, INHBE, and SMAD4) were genotyped. Odds ratios (OR) and 95% confidence intervals (CI) relating variant genotypes to TGCT risk were calculated using unconditional logistic regression. Among White subjects, an elevated risk of TGCT was observed for carriers of the T allele of the INHA variant rs2059693 (CT genotype: OR, 1.33; 95% CI, 1.04-1.71; TT: OR, 1.60; 95% CI, 1.01-2.52; Ptrend = 0.008). The association with rs2059693 was stronger for nonseminomas, and for teratomas and teratocarcinomas in particular (N = 58; CT: OR, 1.63; 95% CI, 0.89-2.99; TT: OR, 4.54; 95% CI 2.00-10.3; P trend = 0.0008). We found no evidence of association with variants in the other investigated genes. These findings suggest that genetic variation in the INHA locus influences TGCT development.
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U2 - 10.1158/0008-5472.CAN-07-5852
DO - 10.1158/0008-5472.CAN-07-5852
M3 - Article
C2 - 18413775
AN - SCOPUS:42349092879
SN - 0008-5472
VL - 68
SP - 3043
EP - 3048
JO - Cancer Research
JF - Cancer Research
IS - 8
ER -