Table showing the number of alleles, proteins and nulls in the IPD-IMGT/HLA Database named as of December 2025.
| Numbers of HLA Alleles | |
|---|---|
| HLA class I alleles | 29854 |
| HLA class II alleles | 13904 |
| HLA alleles | 43758 |
| Other non-HLA alleles | 1118 |
| Number of confidential alleles | 4 |
| HLA class I | ||||||
|---|---|---|---|---|---|---|
| Gene | A | B | C | E | F | G |
| Alleles | 9022 | 10876 | 9031 | 388 | 132 | 197 |
| Proteins | 5267 | 6451 | 4986 | 146 | 30 | 62 |
| Nulls | 481 | 399 | 416 | 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 | 5195 | 994 | 42 | 3022 | 41 | 897 | 6 | 3075 | 7 | 92 | 142 | 153 | 109 |
| Proteins | 20 | 3346 | 486 | 11 | 1786 | 9 | 406 | 0 | 1741 | 0 | 11 | 9 | 18 | 20 |
| Nulls | 0 | 240 | 25 | 0 | 130 | 1 | 35 | 0 | 169 | 0 | 0 | 0 | 1 | 1 |
| HLA class II - DRB Alleles | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gene | DRB1 | DRB2 | DRB3 | DRB4 | DRB5 | DRB6 | DRB7 | DRB8 | DRB9 |
| Alleles | 3924 | 1 | 661 | 341 | 255 | 4 | 2 | 1 | 6 |
| Proteins | 2537 | 0 | 444 | 192 | 173 | 0 | 0 | 0 | 0 |
| Nulls | 143 | 0 | 32 | 36 | 29 | 0 | 0 | 0 | 0 |
| Other non-HLA Genes | ||||||
|---|---|---|---|---|---|---|
| Gene | HFE | MICA | MICB | TAP1 | TAP2 | |
| Alleles | 6 | 659 | 328 | 19 | 106 | |
| Proteins | 4 | 280 | 60 | 11 | 13 | |
| Nulls | 0 | 10 | 25 | 1 | 0 | |
Last updated: 08-Jan-2026