MONDO_0007768 (hyperparathyroidism 2 with jaw tumors) is an autosomal dominant inherited syndrome characterized by the development of parathyroid adenoma or carcinoma, ossifying fibroma of the mandible and maxilla, renal neoplasms, and renal cysts. Also known as: HPT-JT, hyperparathyroidism type 2, hyperparathyroidism-2, hyperparathyroidism-jaw tumor syndrome, hyperparathyroidism-jaw tumour syndrome, parathyroid adenoma with cystic changes.