Table showing the number of alleles, proteins and nulls in the IPD-IMGT/HLA Database named as of June 2026.
| Numbers of HLA Alleles | |
|---|---|
| HLA class I alleles | 30894 |
| HLA class II alleles | 14527 |
| HLA alleles | 45421 |
| Other non-HLA alleles | 1231 |
| Number of confidential alleles | 0 |
| HLA class I | ||||||
|---|---|---|---|---|---|---|
| Gene | A | B | C | E | F | G |
| Alleles | 9279 | 11258 | 9416 | 390 | 139 | 204 |
| Proteins | 5400 | 6668 | 5196 | 147 | 34 | 66 |
| Nulls | 496 | 412 | 442 | 10 | 3 | 6 |
| HLA class I - Pseudogenes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gene | H | J | K | L | N | P | R | S | T | U | V | W | Y | |
| Alleles | 106 | 34 | 7 | 6 | 5 | 5 | 2 | 7 | 9 | 7 | 4 | 13 | 3 | |
| Proteins | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Nulls | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| HLA class II | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gene | DRA | DRB | DQA1 | DQA2 | DQB1 | DQB2 | DPA1 | DPA2 | DPB1 | DPB2 | DMA | DMB | DOA | DOB |
| Alleles | 129 | 5434 | 1056 | 42 | 3121 | 41 | 956 | 6 | 3170 | 7 | 106 | 165 | 169 | 125 |
| Proteins | 20 | 3463 | 535 | 11 | 1843 | 9 | 438 | 0 | 1799 | 0 | 12 | 9 | 19 | 22 |
| Nulls | 0 | 250 | 27 | 0 | 135 | 1 | 37 | 0 | 179 | 0 | 0 | 0 | 1 | 1 |
| HLA class II - DRB Alleles | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gene | DRB1 | DRB2 | DRB3 | DRB4 | DRB5 | DRB6 | DRB7 | DRB8 | DRB9 |
| Alleles | 4023 | 1 | 771 | 357 | 269 | 4 | 2 | 1 | 6 |
| Proteins | 2610 | 0 | 468 | 203 | 182 | 0 | 0 | 0 | 0 |
| Nulls | 149 | 0 | 33 | 36 | 32 | 0 | 0 | 0 | 0 |
| Other non-HLA Genes | ||||||
|---|---|---|---|---|---|---|
| Gene | HFE | MICA | MICB | TAP1 | TAP2 | |
| Alleles | 6 | 728 | 372 | 19 | 106 | |
| Proteins | 4 | 281 | 65 | 11 | 13 | |
| Nulls | 0 | 10 | 26 | 1 | 0 | |
Last updated: 13-Jul-2026