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Article History

Received: 7 November 2017

Accepted: 2 February 2018

First Online: 13 February 2018

Ethics approval and consent to participate

: Institutional review board approval was not required because this analysis is exempt from the regulatory review requirements as set forth in section 46.101 (b) of 45 CFR 46. Patient consent was not required given the retrospective nature of the study and the use of aggregate de-identified data.

: Not applicable.

: All authors are employees of Castle Biosciences, Inc. and hold stock in the company.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.