These tumor samples were analyzed for the presence of pathogenic/likely pathogenic variants in the main susceptibility genes for HNPGLs: SDHx, SDHAF2, VHL, RET, NF1, TMEM127, MAX, FH, MEN2, and SLC25A11. Variants were classified as pathogenic or likely pathogenic according to the annotations in the ClinVar database or by using the criteria of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology (ACMG-AMP) (Richards et al., 2015). Here, RET is linked to neoplasm.