Hum. Reprod. Advance Access originally published online on May 13, 2004
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Human Reproduction, Vol. 19, No. 7, 1570-1574,
July 2004
© 2004 European Society of Human Reproduction and Embryology
Comparison of the aneuploidy frequency in embryos derived from testicular sperm extraction in obstructive and non-obstructive azoospermic men
1 Centre for Reproductive Medicine and 2 Centre for Medical Genetics, University Hospital, Dutch-speaking Brussels Free University (Vrije Universiteit Brussel), Laarbeeklaan 101, 1090 Brussels, Belgium
3 To whom correspondence should be addressed. e-mail: peter.platteau{at}az.vub.ac.be
BACKGROUND: The use of ICSI has been a major breakthrough in the treatment of male infertility. Even azoospermic patients with focal spermatogenesis in the testis (not sufficient to spill over into the ejaculate) may benefit from the technique. Previous reports suggest a higher pregnancy rate after ICSI treatment in patients with obstructive azoospermia (OA) compared to their non-obstructive azoospermia (NOA) counterparts, which could be due to a higher aneuploidy frequency in the embryos of the latter group. We therefore conducted a prospective cohort study to compare the aneuploidy frequency of the screened embryos between the two groups. METHODS: From May 2001 until September 2003, we offered couples with an OA or NOA partner ICSI in combination with preimplantation genetic diagnosis for aneuploidy screening. RESULTS: No difference in age (30.6 and 33.5 years) or stimulation parameters was observed between the two groups; 53 and 60% of the embryos were abnormal in the NOA and OA groups respectively (P = not significant). CONCLUSIONS: The aneuploidy frequency in embryos obtained from NOA as well as OA men is similar and very high, despite the young age of their female partners.
Key words: azoospermia/chromosomal aneuploidy/FISH/PGD/TESE
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