Human Reproduction, Vol. 17, No. 1, 17-24,
January 2002
© 2002 European Society of Human Reproduction and Embryology
Screening for Y chromosome microdeletions in 226 Slovenian subfertile men
1 Division of Medical Genetics, 2 Department of Pathology and 3 Andrology Centre, Department of Obstetrics and Gynecology, University Medical Centre, 1000 Ljubljana, Slovenia
BACKGROUND: The objective of this study was to estimate the frequency of Y chromosome microdeletions in the Slovenian population of infertile men and to analyse the consequences of mutation in respect to clinical severity and prognosis. METHODS: In a controlled clinical study at the university-based medical genetics service and infertility clinic, 226 infertile men undergoing ICSI were tested. The main outcome measures included polymerase chain reaction amplification of 16 genes and gene families and 42 sequence-tagged sites in the non-recombining region of the Y chromosome, semen, testicular volume and testicular histological analysis, serum FSH concentrations, fertilization and respective pregnancy rates. RESULTS: The incidence of deletions was 4.4%: 8.6% in men with azoospermia and 1.5% in men with oligoasthenoteratozoospermia. Isolated gene deletions were not identified. No statistically significant differences in clinical outcome measures were found in patients with mutations versus patients without mutations. High fertilization (49%) and pregnancy (43%) rates with sperm of patients with Y chromosome deletions were obtained. CONCLUSIONS: Testing for gene-specific microdeletions does not contribute significantly to the sensitivity of microdeletion test. Fertilization and pregnancy rates obtained using sperm of patients with Y chromosome deletions were comparable with those achieved in conventional IVF.
Key words: azoospermia/ICSI/male infertility/oligozoospermia/Y chromosome microdeletions
4 To whom correspondence should be addressed. E-mail: borut.peterlin{at}guest.arnes.si
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