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A prospective controlled study of karyotyping for 430 consecutive babies conceived through intracytoplasmic sperm
H Aboulghar1, M Aboulghar, R Mansour
1The Egyptian IVF-ET Center, Egypt. ghar@intouch.com
Objective:
To compare the karyotype of babies conceived through ICSI with that of naturally conceived babies.
Design:
Prospective controlled study.
Setting:
The Egyptian IVF-ET Center, Cairo, Egypt.
Patient(S):
Four hundred and thirty babies conceived through ICSI and 430 babies conceived naturally.
Intervention(S):
ICSI and karyotyping.
Main Outcome Measure(S):
Abnormal karyotype.
Result(S):
Four hundred and thirty consecutive babies conceived through ICSI who were delivered in one hospital had 15 abnormal karyotypes (3.5%). Of the 15 babies, 7 were of female phenotype and 8 of male phenotype. Six babies had sex chromosome anomalies, 8 had autosomal anomalies, and 1 had combined sex chromosome and autosomal anomalies. A control group of 430 consecutive babies conceived naturally who were delivered in one hospital had no abnormal karyotype. The difference between the two groups was significant (P<.001).
Conclusion(S):
ICSI carries a small but significant increased risk of abnormal karyotyping to the offspring. This risk appears to be equally distributed between autosomal and sex chromosome anomalies.