Why Do African Americans with Sickle Cell Disease Need Blood from African Americans?
It all comes down to genetics. Many sickle cell patients require regular blood transfusions throughout their life. Because they are transfused so often, they have the potential of developing antibodies to the transfused blood.
To avoid the production of antibodies, and to avoid the potential of the patient’s body rejecting the transfusion, it is best that these patients receive blood from ethnically matched donors.
So why is that? It all has to do with antigens. In addition to being born with one of eight blood types, you also have antigens on your red blood cells. There are actually 350 known antigens. Our genetics determine the antigens we have and the antigens we lack.
When it comes to blood transfusions, patients receiving regular blood transfusions MUST receive blood that not only matches their blood type but also matches their antigen profile.
By doing this, it will decrease the chance of the patient developing antibodies to the transfused blood.