HLA-A and pure red-cell aplasia: Praditpornsilpa et al.17 demonstrated the high allele frequency of anti-rHuEpo associated PRCA cases and various HLA types including HLA-A (*02, *11 and *24), HLA-B (*18, *46, *60 and *62), HLA-DR (DRB1*09, DRB1*12, and DRB1*15).