However, it is important to understand that not all cases of AIHA show a positive DAT result, as DAT may yield false negatives (up to 10% of all AIHA cases) due to IgA autoantibodies, low-affinity IgG, or IgG bound to red blood cells below the detection threshold of the test [4, 8]. Here, CD79A is linked to autoimmune hemolytic anemia.