Regarding possible FGFR gene amplifications, no study is specifically reporting such data for adrenocortical tumors but a quick query in the COSMIC (https://cancer.sanger.ac.uk/cosmic) database revealed gene amplifications in FGFR1, 3 and 4 genes in 1, 4 and 3 samples in the data of Zheng et al. This evidence concerns the gene FGFR1 and adrenal cortex neoplasm.