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Genetic Counseling and ICSI
Title: Oligospermic men: the role of karyotype analysis prior
to intracytoplasmic injection
Author: L. E. Haug et al.
Address:Boston, Massachusettss
Source: Fertility and Sterility 67:4 612-614 (April)
Synopsis: Intracytoplasmic sperm injection (ICSI) has made fertilization
and pregnancy possible for even severe cases of male infertility. As ICSI
becomes a standard treatment of care for male infertility, it is suggested
that it may be instructive to examine the current genetic knowledge about
oligospermic men. Studies of men with oligospermia revealed small, but clinically
significant, increased rate of chromosome abnormalities. These were almost
exclusively autosomal translocations rather than numeric sex chromosome
aneuploidy. The risk of chromosomal abnormalities in ICSI conceptions from
oligospermic men with unbalanced translocations remains unknown, although
it may be significantly increased, over the risks of natural conceptions.
The authors feel that men with oligospermia should be counseled about karyotype
analysis before undergoing ICSI.
Comment: There appears to be a real chance of transference of infertility
to male offspring of pregnancies achieved by ICSI. Karotyping alone may
be insufficient to evaluate these men and speciallzed genetic studies may
be needed.