HLA-A19 (A19) is a human leukocyte antigen HLA-A serotype that may recognize the A29, A30, A31, A32, A33, and A74 serotypes. While these haplotypes are found all over the globe, their combined frequencies are higher in Sub Saharan Africa; frequencies tend to decline away from Africa.
HLA-A19 has been implicated in a number of diseases, including renal cell carcinoma, Kaposi's sarcoma, vitiligo, and others; antibodies to HLA-A19 were recorded in 86% of infertile men and 92% of infertile women.
| Split antigen serotypes of A19 HLA-A |
| HLA-A29 |
| HLA-A30 |
| HLA-A31 |
| HLA-A32 |
| HLA-A33 |
| HLA-A74 |