Table 1.
Extent of polymorphism at the classical HLA loci
| Locus | Number of alleles |
|---|---|
| A | 1601 |
| B | 2125 |
| C | 1102 |
| DRA | 7 |
| DRB | 1027 |
| DRB1 | 928 |
| DRB2 | 1 |
| DRB3 | 57 |
| DRB4 | 15 |
| DRB5 | 19 |
| DRB6 | 3 |
| DRB7 | 2 |
| DRB8 | 1 |
| DRB9 | 1 |
| DQA1 | 44 |
| DQB1 | 153 |
| DPA1 | 32 |
| DPB1 | 149 |
| Total | 6240 |
Reported number of alleles for each of the classical HLA loci are shown. DRB alleles are shown in total as well as by locus (in italics). Data are taken from the HLA informatics group website (http://www.ebi.ac.uk/imgt/hla/stats.html) and are current as of July 1, 2011.