| DB Release | Release Date | Variants Count | Ref. Count | Last Ref_ID | PubMed Search |
|---|---|---|---|---|---|
| R4 | July 2000 | 144 | 71 | 74 | Jan 1998 - Apr 2000 |
| R5 | June 2001 | 195 | 84 | 91 | May - Dec 2000 |
| R6 | Jan. 2002 | 213 | 90 | 99 | Jan - June 2001 |
| R7 | Sept 2002 | 225 | 97 | 106 | July 2001- June 2002 |
| R8 | June 2003 | 225 | 98 | 108 | - |
| R9 | July 2004 | 264 | 112 | 125 | July 2002 - Dec 2003 |
| R10 | July 2005 | 283 | 123 | 137 | Jan - Dec 2004 |
| R11 | Nov 2006 | 376 | 142 | 156 | Jan - Dec 2005 |
| R12 | Nov 2007 | 399 | 159 | 173 | Jan 2006 - June 2007 |
| R13 | Nov 2008 | 423 | 164 | 181 | Jul 2007- July 2008 |
| R14 | Nov 2009 | 535 | 196 | 211 | Aug 2008 - Aug 2009 |
| R15 | Nov 2010 | 597 | 209 | 224 | Sep 2009 - Oct 2010 |
| R16 | Nov 2012 | 635 | 229 | 244 | Nov 2010 - June 2012 |
| R17 | Nov 2013 | 767 | 256 | 282 | June 2012 - July 2013 |
| R18 | April 2016 | 891 | 289 | 320 | Jul 2013 - Dec 2015 |
| R19 | Aug 2018 | 1,229 | 347 | 384 | Jan 2016 - June 2018 |
| R20 | July 2019 | 1,532 | 405 | 453 | July 2018 - June 2019 |