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The pre-defined list of organisms is updated annually and is derived from the scientific names at the species level and at the genus level as listed in the Integrated Taxonomic Information System (ITIS) database and in the International Committee on Taxonomy of Viruses (ICTV) Master Species List.
Finally, the custom organisms which are stored on the local machine will also appear as part of the organisms list shown in the tool. Currently, the names of the custom organisms included in a sequence listings are not shared with the International Bureau. The International Bureau is currently in discussion with the Sequence Listings Task Force about how custom organisms could be incorporated, after review, into the pre-defined list.