Limited published data exist detailing outcomes of donor embryo cycles. Patients and clinicians would benefit from information specific to donor embryo cycles to inform fertility treatment options, counselling, and clinical decision-making.
We sought to quantify trends in donor embryo cycles in the United States, to characterize donor embryo recipients, and to report transfer, pregnancy, and birth outcomes of donor embryo transfers.
This retrospective cohort study of frozen donor embryo transfers uses data from Centers for Disease Control and Prevention National ART Surveillance System to quantify trends in the use of donor embryos and corresponding rates of pregnancy and live birth from 2000 through 2013. For 2007 through 2013, years reflective of current practice, rates of cancellation, pregnancy, miscarriage, live birth, singleton and twin live birth, and delivery of a full-term singleton infant of normal birthweight (≥37 weeks, ≥2500 g) are reported.
Among all frozen transfers from 2000 through 2013 (n = 391,662), the annual number of donor embryo transfers increased significantly from 332-1374, however the proportion of donor embryo transfers among all frozen transfers did not change significantly (2.3-2.6%). Both overall pregnancy and live birth rates per frozen donor embryo transfer increased significantly (33.3-49.1% and 26.5-40.8%, respectively) (P < .01). Among all initiated donor embryo cycles from 2007 through 2013 (n = 7289), the overall cancellation rate prior to transfer was 7.1%. Among all transfers from 2007 through 2013 (n = 6773), 3193 (47.2%) resulted in pregnancy and 2589 (38.2%) resulted in a live birth. Among all pregnancies, 535 (16.9%) resulted in a miscarriage. Among all live births, 1929 (74.5%) delivered a singleton of which 1482 (76.8%) were full term and normal birthweight.
The increasing availability of donor embryos, low chance of cancellation, and increasing likelihood of achieving live birth can inform consumers and providers who are considering assisted reproductive technology options. Collection of data surrounding donated embryo formation would allow for additional studies that can elucidate predictors of success among donor embryo transfers.
This research output has an Altmetric Attention Score of 13. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 06 July 2024.
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#3,581,820
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#55
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Altmetric has tracked 34,363,559 research outputs across all sources so far. Compared to these this one has done well and is in the 89th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 17,471 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 16.0. This one has done well, scoring higher than 79% of its peers.
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