JOURNAL ARTICLE

Embryo outcome in Y-chromosome microdeleted infertile males after ICSI

Paul E Kihaile, Ramzy E Kisanga, Kazuo Aoki, Yoko Kumasako, Junichi Misumi, Takafumi Utsunomiya
Molecular Reproduction and Development 2004, 68 (2): 176-81
15095338

UNLABELLED: A prospective study involving 118 infertile Japanese couples to assess the embryo outcomes in both azoospermic and oligoasthenoteratoazoospermic (OAT) patients with Y-chromosome microdeletion. The men were divided into two groups; azoospermia (n = 27), and OAT, sperm concentration <5 x 10(6)/ml (n = 91). They were investigated for Y-chromosome microdeletions by a polymerase chain reaction (PCR) amplification of the Y-chromosome-specific sequence tag site (STS). The embryo outcomes of patients found to have Y-microdeletion were determined. The frequency of microdeletion was 8.8% (9) and two had microdeletions distal to DAZ. The mean fertilization rate and the cleavage rate in the eight cycles of both azoospermic and oligospermic patients were 59.3 and 87.5%, respectively. The percentages of grade 1 & 2 embryos, > or =6 cells embryos, and blastocyts were 51.7, 65.6, and 45.3%, respectively. Three pregnancies resulted from the eight cycles (37.5%).

CONCLUSION: in Y-chromosome microdeletion cycles in which sperm cells were available for intracytoplasmic sperm injection (ICSI), embryo outcome was comparable to conventional IVF.

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