An article was published in Fertility and Sterility in September 2017, on investigations of the association between blood type and IVF cycle outcomes, titled Association between ABO blood type and live-birth outcomes in single embryo transfer cycles.

This retrospective cohort study was looking at differences in patient’s blood type in IVF cycle outcomes. Over 2,000 women under the age of 40 undergoing their first IVF cycle, with day 5 single embryo transfer, were included in the trial. There were no differences in baseline demographics, ovarian stimulation, or embryo quality parameters between the blood types. The objective of the study was to investigate if there are differences in blood types, measured by live-birth rates, birth weight and gestational age at delivery.

A total of 2,329 patients were included and the mean age of the study cohort was 34.6 ± 4.78 years. The distribution of blood types was as follows: A = 897 (38.5%); B = 397 (17.0%); AB = 120 (5.2%); and O = 1,915 (39.3%) patients. No differences in live-birth rates, birth weight or gestational age at delivery were noted among the four blood types.