Table showing the number of alleles, proteins and nulls in the IPD-IMGT/HLA Database named as of September 2026.
| Numbers of HLA Alleles | |
|---|---|
| HLA class I alleles | 31311 |
| HLA class II alleles | 14835 |
| HLA alleles | 46146 |
| Other non-HLA alleles | 1278 |
| Number of confidential alleles | 0 |
| HLA class I | ||||||
|---|---|---|---|---|---|---|
| Gene | A | B | C | E | F | G |
| Alleles | 9457 | 11328 | 9580 | 390 | 140 | 207 |
| Proteins | 5503 | 6702 | 5293 | 147 | 34 | 66 |
| Nulls | 509 | 413 | 451 | 10 | 3 | 6 |
| HLA class I - Pseudogenes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gene | H | J | K | L | N | P | R | S | T | U | V | W | Y | |
| Alleles | 106 | 34 | 8 | 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 | 136 | 5604 | 1084 | 42 | 3161 | 41 | 980 | 6 | 3209 | 7 | 106 | 165 | 169 | 125 |
| Proteins | 20 | 3495 | 550 | 11 | 1860 | 9 | 446 | 0 | 1816 | 0 | 12 | 9 | 19 | 22 |
| Nulls | 0 | 257 | 28 | 0 | 137 | 1 | 38 | 0 | 180 | 0 | 0 | 0 | 1 | 1 |
| HLA class II - DRB Alleles | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gene | DRB1 | DRB2 | DRB3 | DRB4 | DRB5 | DRB6 | DRB7 | DRB8 | DRB9 |
| Alleles | 4056 | 1 | 828 | 404 | 302 | 4 | 2 | 1 | 6 |
| Proteins | 2629 | 0 | 477 | 205 | 184 | 0 | 0 | 0 | 0 |
| Nulls | 153 | 0 | 33 | 39 | 32 | 0 | 0 | 0 | 0 |
| Other non-HLA Genes | ||||||
|---|---|---|---|---|---|---|
| Gene | HFE | MICA | MICB | TAP1 | TAP2 | |
| Alleles | 6 | 732 | 415 | 19 | 106 | |
| Proteins | 4 | 282 | 69 | 11 | 13 | |
| Nulls | 0 | 10 | 26 | 1 | 0 | |
Last updated: 14-Oct-2026