Letter to the editor: radiomics analysis for predicting pembrolizumab response in patients with advanced rare cancers.

A commentary on the original research article: 'Radiomics analysis for predicting pembrolizumab response in patients with advanced rare cancers'. Of note, the predictor selection process, the cross-validation method, along with the lack of final testing of the developed model with a separated data set may mask overfitting, overestimating performance metrics.
Competing Interests: Competing interests: GdC has received personal fees from AstraZeneca, Bayer, Bristol-Myers Squibb, Boehringer Ingelheim, Janssen, Lilly, Merck Serono, Merck Sharp and Dohme, Novartis, Pfizer, Roche, Teva, and Yuhan, none related to this publication.
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