title: Gonadal dysfunction in male cancer patients before cytotoxic treatment.
abstract: Male patients diagnosed with cancer are often referred for semen cryopreservation before gonadotoxic treatment but often have low semen quality. The aim of this study was to evaluate which type of cancer affects gonadal function and proposes a risk factor for low pre-treatment semen quality. Between January 1983 and August 2006, 764 male cancer patients were referred for semen cryopreservation prior to chemotherapy and radiotherapy. We compared semen characteristics and reproductive hormones between different groups of cancer patients. In addition, we evaluated the role of tumour markers in patients with testicular germ-cell tumours (TGCT) on fertility. Abnormal semen parameters were found in 489 men (64%) before cancer treatment. Patients with TGCT and extragonadal germ-cell tumours had significantly lower sperm concentrations and inhibin B levels than all other patient groups. No semen could be banked in 93 patients (12.2%). Eight hundred and thirty-nine of 927 (90%) produced semen samples were adequate for cryopreservation. Inhibin B in all groups showed to be the best predictor of semen quality. Although pre-treatment raised tumour markers were associated with a decrease in inhibin B and increased follicle stimulating hormone, both predictive for low semen quality; no direct linear association could be found between raised beta-HCG, alfa-fetoprotein and semen quality. Only 1/3 of cancer patients had normal semen parameters prior to cancer treatment. Patients with TGCT and extragonadal GCT have the highest risk for impaired semen quality and gonadal dysfunction at the time of semen cryopreservation.
authors.affiliation: Andrology Section of the Department of Urology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.
authors.forename: Niels J
authors.initials: NJ
authors.lastname: van Casteren
authors.forename: Willem P A
authors.initials: WP
authors.lastname: Boellaard
authors.forename: Johannes C
authors.initials: JC
authors.lastname: Romijn
authors.forename: Gert R
authors.initials: GR
authors.lastname: Dohle
mesh_terms: D000293:Adolescent; D000328:Adult; D015925:Cryopreservation; D005298:Fertility; D006058:Gonadal Disorders / Q000150:complications / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D007246:Infertility / Q000150:complications / Q000473:pathology / Q000503:physiopathology; D007265:Inhibins; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000150:complications* / Q000188:drug therapy* / Q000473:pathology; D009373:Neoplasms, Germ Cell and Embryonal / Q000150:complications* / Q000473:pathology / Q000503:physiopathology; D009845:Oligospermia / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D012661:Semen; D055101:Semen Analysis; D013076:Sperm Count; D013736:Testicular Neoplasms / Q000188:drug therapy / Q000473:pathology* / Q000503:physiopathology*; D055815:Young Adult
chemical_list: C422364:inhibin B; D007265:Inhibins