The purpose of the UniProtKB/Swiss-Prot variant pages is:

• to display the variant related information extracted from UniProtKB/Swiss-Prot,
• to provide useful additional information such as the conservation of the modified residues across orthologous species.

The URL of the UniProtKB/Swiss-Prot variant pages is the following:
https://web.expasy.org/variant_pages/[identifier].html
Example: https://web.expasy.org/variant_pages/VAR_044544.html