Database Growth
The IPD-IMGT/HLA Database was first released in 1998 with 964 alleles. The latest version has 39886 distinct allelic variants.
The graph below indicates the numbers of alleles named and held in the IPD-IMGT/HLA Database since 1987 up to 2024-04-10.
(A higher resolution version is available here)
The total number of alleles for each release is available from the following table:
| Database Growth | |||
|---|---|---|---|
| Release | Month | Alleles | Component Entries |
| 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 |