title: Susceptibility to astrocytoma and meningioma: influence of allelism at glutathione S-transferase (GSTT1 and GSTM1) and cytochrome P-450 (CYP2D6) loci.
abstract: We describe a case-control study to identify associations between polymorphism at the cytochrome P-450 (CYP2D6) and glutathione S-transferase (GSTT1 and GSTM1) loci and susceptibility to astrocytoma and meningioma. Accordingly, genotype frequencies in 112 astrocytoma and 50 meningioma patients were compared with frequencies in 577 controls. GSTM1 genotype frequencies in these groups were not different. Logistic regression analysis showed GSTT1 null and CYP2D6 poor metabolizer were risk factors in astrocytoma (odds ratio = 2.67 P = 0.0005 and odds ratio = 4.17 P = 0.0043, respectively) and meningioma (odds ratio = 4.52, P = 0.0001 and odds ratio = 4.90, P = 0.0132, respectively) when corrected for the other variables. No interactive effects between genotypes were identified. The data suggest polymorphism at loci encoding carcinogen-metabolizing enzymes influences susceptibility to astrocytoma and meningioma, possibly by determining effectiveness in the detoxification of environmental carcinogens.
authors.affiliation: Department of Neurosurgery, Keele University, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Elexpuru-Camiruaga
authors.forename: N
authors.initials: N
authors.lastname: Buxton
authors.forename: V
authors.initials: V
authors.lastname: Kandula
authors.forename: P S
authors.initials: PS
authors.lastname: Dias
authors.forename: D
authors.initials: D
authors.lastname: Campbell
authors.forename: J
authors.initials: J
authors.lastname: McIntosh
authors.forename: J
authors.initials: J
authors.lastname: Broome
authors.forename: P
authors.initials: P
authors.lastname: Jones
authors.forename: A
authors.initials: A
authors.lastname: Inskip
authors.forename: J
authors.initials: J
authors.lastname: Alldersea
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D001254:Astrocytoma / Q000235:genetics*; D016022:Case-Control Studies; D019389:Cytochrome P-450 CYP2D6; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics*; D005260:Female; D005838:Genotype; D005982:Glutathione Transferase / Q000235:genetics*; D006801:Humans; D007527:Isoenzymes / Q000235:genetics*; D008297:Male; D008577:Meningeal Neoplasms / Q000235:genetics*; D008579:Meningioma / Q000235:genetics*; D008875:Middle Aged; D006899:Mixed Function Oxygenases / Q000235:genetics*; D012044:Regression Analysis
chemical_list: D007527:Isoenzymes; D003577:Cytochrome P-450 Enzyme System; D006899:Mixed Function Oxygenases; D019389:Cytochrome P-450 CYP2D6; D005982:Glutathione Transferase