Database Growth
The IPD-KIR Database was first released in 2003 with 87 alleles. The latest version has distinct allelic variants.
The graph below indicates the numbers of alleles named and held in the IPD-KIR Database since 2003 up to 2025-12-10.
(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 |
| 2.15 | 2025-12 | 2286 | 3171 |
| 2.14 | 2024-12 | 2231 | 3100 |
| 2.13 | 2023-12 | 2219 | 3086 |
| 2.12 | 2022-12 | 1617 | 2162 |
| 2.11 | 2021-12 | 1535 | 2073 |
| 2.10 | 2020-12 | 1532 | 2046 |
| 2.9 | 2019-12 | 1110 | 1430 |
| 2.8 | 2018-11 | 977 | 1258 |
| 2.7 | 2017-07 | 907 | 1106 |
| 2.6 | 2015-01 | 795 | 884 |
| 2.5 | 2013-10 | 729 | 832 |
| 2.4 | 2011-04 | 673 | 698 |
| 2.3 | 2010-08 | 614 | 567 |
| 2.2 | 2010-05 | 346 | 503 |
| 2.1 | 2009-02 | 284 | 426 |
| 2.0 | 2008-01 | 257 | 409 |
| 1.4 | 2007-06 | 168 | 316 |
| 1.3 | 2006-11 | 160 | 286 |
| 1.2 | 2006-03 | 146 | 263 |
| 1.1 | 2005-01 | 118 | 200 |
| 1.0 | 2003-07 | 87 | 119 |