Table 2.
Composition of the dataset of elongation events.
| Allele | Count | Percent |
| DPB1*0401 | 38 | 2.97 |
| DPB1*0402 | 38 | 2.97 |
| DQA1*0301/DQB1*0301 | 64 | 5 |
| DQA1*0501/DQB1*0201 | 114 | 8.91 |
| DRB1*0101 | 124 | 9.7 |
| DRB1*0301 | 1 | 0.08 |
| DRB1*0401 | 77 | 6.02 |
| DRB1*0404 | 2 | 0.16 |
| DRB1*0405 | 3 | 0.23 |
| DRB1*0802 | 3 | 0.23 |
| DRB1*0803 | 2 | 0.16 |
| DRB1*0901 | 3 | 0.23 |
| DRB1*1101 | 3 | 0.23 |
| DRB1*1201 | 3 | 0.23 |
| DRB1*1302 | 3 | 0.23 |
| DRB1*1501 | 682 | 53.32 |
| DRB3*0101 | 24 | 1.88 |
| DRB4*0101 | 1 | 0.08 |
| DRB5*0101 | 94 | 7.35 |
| Total | N = 1279 | 100 |
The dataset of peptide elongation events contained a total of 1279 elongation events covering 19 distinct alleles. The representative numbers for each allele are preresented as raw counts and percentages.