title: Linkage between androgen receptor gene CAG trinucleotide repeat length and testicular germ cell cancer histological type and clinical stage.
abstract: Sex hormones and/or gonadotropins may play a crucial role in the development of testicular germ cell cancer (TGCC). A direct link between this malignancy and endocrine factors has not been confirmed. We tested whether CAG and GGN repeats of the androgen receptor gene (AR) play a role in the aetiology or pathogenesis of TGCC. Eighty-three TGCC patients and 220 controls were included. Mean CAG or GGN lengths did not differ between the TGCC cases and controls. The proportion of males with CAG lengths above 25, indicative of reduced androgen sensitivity, was significantly lower among patients with pure seminomas and in the combined group of seminomas and mixed tumours compared with non-seminomas and controls. The median CAG length was higher if the tumour was metastasing at diagnosis. This is the first study showing an association between the AR polymorphism and histological type as well as the progression rate of TGCC.
authors.affiliation: Fertility Centre, Scanian Andrology Centre, Malmö University Hospital, SE 205 02, Sweden. aleksander.giwercman@kir.mas.lu.se
authors.forename: Aleksander
authors.initials: A
authors.lastname: Giwercman
authors.forename: Kristina B
authors.initials: KB
authors.lastname: Lundin
authors.forename: Jakob
authors.initials: J
authors.lastname: Eberhard
authors.forename: Olof
authors.initials: O
authors.lastname: Ståhl
authors.forename: Magdalena
authors.initials: M
authors.lastname: Cwikiel
authors.forename: Eva
authors.initials: E
authors.lastname: Cavallin-Ståhl
authors.forename: Yvonne Lundberg
authors.initials: YL
authors.lastname: Giwercman
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods; D011944:Receptors, Androgen / Q000235:genetics*; D018239:Seminoma / Q000235:genetics* / Q000473:pathology; D013736:Testicular Neoplasms / Q000235:genetics* / Q000473:pathology; D018911:Trinucleotide Repeats / Q000235:genetics*
chemical_list: D011944:Receptors, Androgen