FAT1 and neoplasm: In PF, among the 11 mutations detected in tumor biopsies, 2 (VIL1- NM_007127.3:c.2070C > T and NF2-NM_016418.5:c.985A > T) could not be analyzed due to the lack of biological specimens of subjects 02P and 03P, whereas 1 (FAT1- rs776531396; ID = 05T) was undetectable.