as illustrated by our case and other case reports, there is a need for increased communication between specialists in transfusion medicine, reproductive medicine specialists, obstetricians, and hospital staff for optimal management of women whose pregnancy was ART induced.Many couples may consider infertility and an ARTinduced pregnancy to be a private matter and hesitate to volunteer the pertinent information to the caregivers at the time of delivery. 8 For that reason, pregnant women should be informed of the potential complications if an ARTrelated parent-child blood group discrepancy or incompatibility is detected-or undetected-by routine care of their newborn at delivery. Before delivery, caretakers who have not been directly involved from the onset of the pregnancy should ask women if their pregnancy was ART-induced using a donor oocyte or sperm and, if it were, the blood bank should be informed. Should ABO matching be considered when selecting a donor oocytes or sperm? We do not recommend such matching, since ABO compatibility is not standard practice for conventional matings. However, Dwomen should be informed about the potential consequence of Rh alloimmunization if a D1 oocyte or sperm donor were selected. Women who are planning an ARTinduced pregnancy and are already alloimmunized, for example, as in the cases of anti-C, 4 anti-c, 6 or anti-K, 6 should be informed of the importance of selecting an oocyte or sperm donor whose antigen-negative phenotype could avert the risk of hemolytic disease of the fetus or newborn. Finally, given the increasing utilization of oocyte or sperm donors by fertility clinics, we recommend that transfusion services, textbooks of transfusion medicine, and immunohematology as well as the AABB Technical Manual add ART to the list of potential causes of parent-child ABO discrepancy.