# Adding a Variant Annotation Database

Click the **+ Add variant annotations** button under the *Variant annotations* section header on the [library file management page](/partek/partek-flow/user-manual/settings/components/library-file-management/library-file-management-page.md).

If you are using a human - hg19 assembly, variant annotation databases from various sources will appear in the *Variant annotation* drop-down list (Figure 1). Available variant annotation database sources include:

* dbSNP
* Kaviar
* NHLBI Variant Server
* 1000 Genomes

Multiple versions of the above databases are available. For human - hg38, only dbSNP is currently available. This list is periodically updated.

![Figure 1. For human - hg19, automatic downloads of various variant annotation databases are available from the Partek repository](/files/I0VJbPeWKtUj4m6dQMFK)

Choose a database from the drop-down list, select the **Download variant database** radio button and click **Create**.

If you prefer to add a custom variant annotation database, perhaps from another source or 'gold-standard' validated variants, choose **Add variant database** from the *Variant annotation* drop-down list (Figure 2). Name the variant annotation database by typing into the *Custom Name* box and click **Create**. Characters such as $ \* | \ : " < > ? / % cannot be used in custom names. A variant annotation database can be added from the *Partek Flow Server* or a *URL* download link. The behavior of each option is similar to when importing a reference sequence (see [*Adding a Reference Sequence*](/partek/partek-flow/user-manual/settings/components/library-file-management/adding-a-reference-sequence.md)). When browsing for files on the Partek Flow server, only the files with relevant file extensions will be visible (.vcf and various compressed formats).

![Figure 2. Add a custom variant annotation database](/files/mQ97GMQXoo1NH5jD33Bt)

## Additional Assistance

If you need additional assistance, please visit [our support page](http://www.partek.com/support) to submit a help ticket or find phone numbers for regional support.


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