Database Growth
The IPD-IMGT/HLA Database was first released in 1998 with 964 alleles. The latest version has 44028 distinct allelic variants.
The graph below indicates the numbers of alleles named and held in the IPD-IMGT/HLA Database since 1987 up to 2025-10-08.
The total number of alleles for each release is available from the following table:
| Database Growth | |||
|---|---|---|---|
| Release | Month | Alleles | Component Entries |
| 3.62 | 2025-10 | 44028 | 78762 |
| 3.61 | 2025-07 | 43225 | 77035 |
| 3.60 | 2025-04 | 42584 | 76021 |
| 3.59 | 2025-01 | 42026 | 75254 |
| 3.58 | 2024-10 | 41433 | 74079 |
| 3.57 | 2024-07 | 40623 | 72865 |
| 3.56 | 2024-04 | 39886 | 71247 |
| 3.55 | 2024-01 | 38909 | 69989 |
| 3.54 | 2023-10 | 38416 | 69249 |
| 3.53 | 2023-07 | 37619 | 67974 |
| 3.52 | 2023-04 | 37068 | 67078 |
| 3.51 | 2023-01 | 36625 | 66477 |
| 3.50 | 2022-10 | 36016 | 65563 |
| 3.49 | 2022-07 | 35077 | 64294 |
| 3.48 | 2022-04 | 34145 | 62766 |
| 3.47 | 2022-01 | 33552 | 61767 |
| 3.46 | 2021-10 | 32330 | 59762 |
| 3.45 | 2021-07 | 31522 | 58527 |
| 3.44 | 2021-04 | 30522 | 57074 |
| 3.43 | 2021-01 | 29417 | 55268 |
| 3.42 | 2020-10 | 28786 | 54139 |
| 3.41 | 2020-07 | 27980 | 52794 |
| 3.40 | 2020-04 | 27258 | 51823 |
| 3.39 | 2020-01 | 26512 | 50427 |
| 3.38 | 2019-10 | 25958 | 48804 |
| 3.37 | 2019-07 | 24093 | 45307 |
| 3.36 | 2019-04 | 22528 | 41623 |
| 3.35 | 2019-01 | 21683 | 40451 |
| 3.34 | 2018-10 | 20272 | 38209 |
| 3.33 | 2018-07 | 18955 | 36161 |
| 3.32 | 2018-04 | 18363 | 35057 |
| 3.31 | 2018-01 | 17874 | 33978 |
| 3.30 | 2017-10 | 17509 | 32919 |
| 3.29 | 2017-07 | 17344 | 32640 |
| 3.28 | 2017-04 | 16933 | 32106 |
| 3.27 | 2017-01 | 16429 | 31208 |
| 3.26 | 2016-10 | 15819 | 30152 |
| 3.25 | 2016-07 | 15020 | 29205 |
| 3.24 | 2016-04 | 14473 | 28838 |
| 3.23 | 2016-01 | 14409 | 27805 |
| 3.22 | 2015-10 | 14015 | 27286 |
| 3.21 | 2015-07 | 13580 | 26583 |
| 3.20 | 2015-04 | 13190 | 26003 |
| 3.19 | 2015-01 | 12707 | 25361 |
| 3.18 | 2014-10 | 12407 | 24910 |
| 3.17 | 2014-07 | 12010 | 24246 |
| 3.16 | 2014-04 | 11389 | 23222 |
| 3.15 | 2014-01 | 10691 | 22291 |
| 3.14 | 2013-10 | 10104 | 20781 |
| 3.13 | 2013-07 | 9564 | 20240 |
| 3.12 | 2013-04 | 9310 | 19659 |
| 3.11 | 2013-01 | 8949 | 19086 |
| 3.10 | 2012-10 | 8644 | 18407 |
| 3.9 | 2012-07 | 8159 | 17832 |
| 3.8 | 2012-04 | 7670 | 17261 |
| 3.7 | 2012-01 | 7269 | 16745 |
| 3.6 | 2011-10 | 7196 | 15187 |
| 3.5 | 2011-07 | 6944 | 14497 |
| 3.4 | 2011-04 | 6534 | 13381 |
| 3.3 | 2011-01 | 6189 | 12618 |
| 3.2 | 2010-10 | 5788 | 11914 |
| 3.1 | 2010-07 | 5302 | 11144 |
| 3.0 | 2010-04 | 4743 | 10245 |
| 2.28 | 2010-01 | 4556 | 9819 |
| 2.27 | 2009-10 | 4161 | 9115 |
| 2.26 | 2009-07 | 3864 | 7940 |
| 2.25 | 2009-04 | 3635 | 7585 |
| 2.24 | 2009-01 | 3477 | 7122 |
| 2.23 | 2008-10 | 3410 | 7028 |
| 2.22 | 2008-07 | 3201 | 6840 |
| 2.21 | 2008-04 | 3187 | 6693 |
| 2.20 | 2008-01 | 3095 | 6506 |
| 2.19 | 2007-10 | 3043 | 6430 |
| 2.18 | 2007-07 | 2901 | 6246 |
| 2.17 | 2007-04 | 2816 | 6139 |
| 2.16 | 2007-01 | 2683 | 5957 |
| 2.15 | 2006-10 | 2607 | 5849 |
| 2.14 | 2006-07 | 2533 | 5753 |
| 2.13 | 2006-04 | 2429 | 5598 |
| 2.12 | 2006-01 | 2337 | 5585 |
| 2.11 | 2005-10 | 2280 | 5510 |
| 2.10 | 2005-07 | 2182 | 5224 |
| 2.9 | 2005-04 | 2076 | 4949 |
| 2.8 | 2005-01 | 1972 | 4768 |
| 2.7 | 2004-10 | 1935 | 4666 |
| 2.6 | 2004-07 | 1883 | 4519 |
| 2.5 | 2004-04 | 1814 | 4405 |
| 2.4 | 2004-01 | 1777 | 4331 |
| 2.3 | 2003-10 | 1738 | 4238 |
| 2.2 | 2003-07 | 1695 | 4139 |
| 2.1 | 2003-04 | 1646 | 4029 |
| 2.0 | 2003-01 | 1620 | 3956 |
| 1.16 | 2002-10 | 1588 | 3868 |
| 1.15 | 2002-07 | 1546 | 3734 |
| 1.14 | 2002-04 | 1519 | 3634 |
| 1.13 | 2002-01 | 1496 | 3572 |
| 1.12 | 2001-10 | 1467 | 3558 |
| 1.11 | 2001-07 | 1437 | 3349 |
| 1.10 | 2001-04 | 1390 | 3349 |
| 1.9 | 2001-01 | 1341 | 3028 |
| 1.8 | 2000-10 | 1257 | 2976 |
| 1.7 | 2000-07 | 1220 | 2620 |
| 1.6 | 2000-04 | 1156 | 2566 |
| 1.5 | 2000-01 | 1116 | 2444 |