(Apr 26, 2023): A sum of 1,131 new correlations [Breakdown by species -- Pig: 198; Cattle: 597; Chicken: 202; Sheep: 134; ] and a sum of 371 new heritability data [Breakdown by species -- Pig: 108; Cattle: 202; Chicken: 20; Horse: 8; Sheep: 33; ] have been curated into the CorrDB. To date, the total number of correlation data in the database: 27,970 [Breakdown by species -- Cattle: 14,068 (on 357 traits, 162 trait variants); Chicken:2,037 (on 81 traits, 47 trait variants); Horse:209 (on 27 traits, 0 trait variants); Pig:9,100 (on 238 traits, 107 trait variants); Sheep:2,245 (on 77 traits, 90 trait variants); Goat:311 (on 32 traits, 0 trait variants)], and total heritability data: 5,149 [Breakdown by species -- Cattle:2,532 (on 410 traits, 179 trait variants); Chicken:397 (on 108 traits, 39 trait variants); Horse:131 (on 54 traits, 1 trait variants); Pig:1,715 (on 286 traits, 83 trait variants); Sheep:369 (on 114 traits, 90 trait variants); Goat:5 (on 2 traits, 3 trait variants)] curated from 520 publications.
In addition, as part of our efforts on data quality controls, update works have been made to previously curated data that involved 8,165 correlations, 194 base traits, and 1,044 trait variants.
( This is a joint release with the 50th QTLdb release.)

Database developments summary:
(1) Our works on devising new structures/curation pipelines introducing "trait variants" date type is published on recent issue of Oxford journal Database (Volume 2023, baad024), "A combinatorial approach implementing new database structures to facilitate practical data curation management of QTL, association, correlation and heritability data on trait variants" (DOI: 10.1093/database/baad024). (2) As a result of implementing trait variant curation, several changes are visible on this data release: (a) There are new parameters to describe traits in GFF files (column 9) for data downloads, namely 'BaseTrait', 'TraitVariant', and 'TraitReprtNM', for "base trait", "trait variants", and "reported trait names," respectively (see the QTLdb FAQ "Terminology" section for details). (b) Data summaries on trait variants are visible (you may have noticed on our database releases since last year a reduction in the number of base traits and increase in the number of trait variants -- for those who are interested to know the reason, please read our paper for details). (c) Changes are coming on web pages describing traits; stay tuned. (3) We retrospectively fixed some non-current-standard characters stored in the database, which sometimes displayed as black diamonds or other types of "gibberish" in a web browser, introduced during historical data curations when these characters were copied/pasted into the database over the past 20 years. The "non-current-standard characters" include symbols representing "plus-minus sign" (± or +/-), "multiplication sign" (x or x), and may involve decodes from ASCII, UNICODE, HEX code, and/or HTML character coding methods. The solutions included character settings alignment in the backend storage engine and web interface programming environments, in compliance with current standards. Procedures have been implemented in the curation environment to automatically catch or convert non-standard characters or flag to make suggestions to curators.

For most recent updates, please refer to What's New page on this site for related items.