Abstract
Objective
To determine whether younger oocyte donor age is associated with better outcomes after in vitro fertilization (IVF) compared with older oocyte donor age.
Design
A retrospective cohort study.
Setting
Large academically affiliated infertility treatment center.
Patients
We included all women ≥ 18 years who started their first fresh cycle using donor oocytes at our center from January 2002 through October 2017; only the first oocyte recipient cycle was analyzed.
Intervention
Log-binomial regression was used to compare the incidence of clinical pregnancy and live birth among the following donor age groups: < 25 years, 25 to < 30 years, and 30 to <35 years.
Main outcome measure
Incidence of clinical pregnancy and live birth among donor age groups.
Results
We included 774 donor cycles; 269 (34.8%) used donors < 25 years, 399 (51.6%) used donors 25 to < 30 years, and 106 (13.7%) used donors 30 to < 35 years. Median donor age was 26 years (range 18–34.5), and median recipient age and partner age were both 42 years. Per cycle start, after adjusting for recipient age, cycles using donors < 25 years were not associated with a higher incidence of clinical pregnancy (RR 0.90; 95% CI 0.77–1.06) or live birth (RR 0.87; 95% CI 0.72–1.04) compared with donors age 25–< 30 years.
Conclusions
Donor age < 25 was not associated with better outcomes after IVF. Under the age of 30, the prioritization of <25 year old donors may not be recommended given the lack of evidence for superior pregnancy or live birth outcomes.
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Funding
This work was conducted with financial support from Harvard Catalyst | The Harvard Clinical and Translational Science Center (National Center for Research Resources and the National Center for Advancing Translational Sciences, National Institutes of Health Award 1UL1 TR001102-01) and financial contributions from Harvard University and its affiliated academic health care centers.
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The institutional review board at Beth Israel Deaconess Medical Center approved this study.
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Humphries, L.A., Dodge, L.E., Kennedy, E.B. et al. Is younger better? Donor age less than 25 does not predict more favorable outcomes after in vitro fertilization. J Assist Reprod Genet 36, 1631–1637 (2019). https://doi.org/10.1007/s10815-019-01494-x
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DOI: https://doi.org/10.1007/s10815-019-01494-x