Can maternofetal transfusion provoke adverse outcomes akin to TA-GVHD?

During pregnancy, a bidirectional transfer of molecules and cells takes place through the placenta, which can be considered a transfusion. For decades, we have wondered whether said transfusion can lead to a true TA-GVHD. We propose several factors that may influence production of TA-GVHD during pregnancy. In order to achieve this, we shall take into account possible destinations for transfused leukocytes, which represent extremely different scenarios and may include transfusion associated-graft versus host disease (TA-GVHD).