found mutations related to parathyroid adenoma development in 5% of ZFX gene aiming cyclin D1, in 2%–5% of CTNNB1 gene, encoding β-catenin, in 1% of EZH2 gene, accelerating β-catenin and <1% of POT1 which is a genome stabilizer (10). Here, CCND1 is linked to parathyroid gland adenoma.