title: Embryo outcome in Y-chromosome microdeleted infertile males after ICSI.
abstract: 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%).
  
  
  CONCLUSIONS
  in Y-chromosome microdeletion cycles in which sperm cells were available for intracytoplasmic sperm injection (ICSI), embryo outcome was comparable to conventional IVF.
authors.affiliation: Oita Medical University, Oita City 879-5593, Japan. kihaile@oita-med.ac.jp
authors.forename: Paul E
authors.initials: PE
authors.lastname: Kihaile
authors.forename: Ramzy E
authors.initials: RE
authors.lastname: Kisanga
authors.forename: Kazuo
authors.initials: K
authors.lastname: Aoki
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kumasako
authors.forename: Junichi
authors.initials: J
authors.lastname: Misumi
authors.forename: Takafumi
authors.initials: T
authors.lastname: Utsunomiya
mesh_terms: D015415:Biomarkers; D002872:Chromosome Deletion; D041322:Chromosomes, Human, Y / Q000235:genetics*; D005260:Female; D006801:Humans; D007248:Infertility, Male / Q000235:genetics*; D008297:Male; D011247:Pregnancy; D018873:Pregnancy Rate; D011446:Prospective Studies; D016324:Sequence Tagged Sites; D020554:Sperm Injections, Intracytoplasmic
chemical_list: D015415:Biomarkers