“…[5][6][7] In addition, the fact that Mrs. Gregory, in whom the first example of this antibody specificity was detected, 4 had two uncomplicated pregnancies suggests that anti-Gy a does not cause HDFN. However, in a blood transfusion setting, the clinical significance of anti-Gy a remains more controversial: some authors have observed no or only mild haemolytic transfusion reactions, 1,[8][9][10] whereas others consider anti-Gy a a serious antibody. 7,[11][12][13]…”