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Does egg-sharing compromise the chance of donors or recipients achieving a live birth?

Human Reproduction 2003 November
BACKGROUND: To evaluate the effect of egg-sharing and the outcome of assisted reproductive treatment (ART) in standard IVF/ICSI patients, egg-sharing donors and egg-sharing recipients.

METHODS: Descriptive cohort study to evaluate 276 egg-sharing cycles involving 192 egg-sharers, 274 recipient cycles receiving eggs from egg-sharers and 1098 non-egg-sharing standard IVF/ICSI cycles from January 1998 to December 2002. Patients were divided into three groups: group A, egg-sharers; group B, non-egg-sharers, age <36 years, FSH <10 IU/l, BMI <30 kg/m(2); and group C, egg-sharing recipients, all ages. Duration and amount of gonadotrophin required to achieve follicular maturity, number of eggs collected and donated, fertilization rate, pregnancy rates and live birth rates were compared between donor, recipient and standard IVF/ICSI patients. The chi(2 )test was used to test for statistical significance (P < 0.05).

RESULTS: There was no significant difference in pregnancy rate and live birth rate of egg-sharers, group A (42.0%, 33.0%), non-egg-sharers, group B (40.0%, 30.9%) and recipients, group C (41.4%, 28.6%). The number of oocytes collected, number of mature follicles and amount of gonadotrophin used was not significantly different between the two groups (A and B). The average number of embryos transferred and the mean number of eggs allocated between egg-sharers and recipients was not statistically different.

CONCLUSION: Egg-sharing does not compromise the chance of achieving a pregnancy or live birth for the egg-sharer or the recipient as compared to standard IVF/ICSI patients. The egg-sharers were not at a higher potential risk of ovarian stimulation syndrome and there was no imbalance of egg allocation.

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