Quote from Artful D0dger:
There's a far higher chance (almost certain) that your body would reject it, depending on the organ. In most cases, the chances for success in an interracial organ donation are so myopic that it's rarely attempted; it's generally considered a waste of an organ. This varies from organ to organ, and there are some exceptions.
Quote from AK Forty Seven:
There are successful interracial organ transplants .If you were about to die and there was an organ from a black person that might save your life even if the chance of success were small would you accept it ?