CDC73 and head and neck squamous cell carcinoma: Human Parafibromin/Cell division cycle 73 (Cdc73)/hyperparathyroidism type 2 (HRPT2) is a tumor suppressor that is linked to several cancers, including parathyroid carcinomas and hyperparathyroidism–jaw tumor syndrome, head and neck squamous cell carcinomas, as well as breast, gastric, colorectal, and lung cancers [45–48].