Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
This cover was created to represent the challenges of variant classification and reclassification in genetics. I drew an individual in deep thought to represent the caution researchers are encouraged to use when interpreting results; it is suggested scientists use the “uncertain until proven guilty” approach.