MedGen

The spectrum of CDC73-related disorders includes the following phenotypes: Hyperparathyroidism-jaw tumor (HPT-JT) syndrome. Primary hyperparathyroidism, the main finding of HPT-JT syndrome, occurs in up to 95% of affected individuals; onset is typically in late adolescence or early adulthood. HPT-JT-associated primary hyperparathyroidism is usually caused by a single parathyroid adenoma. In approximately 10%-15% of individuals, primary hyperparathyroidism is caused by parathyroid carcinoma. Ossifying fibromas of the mandible or maxilla, also known as cementifying fibromas and cemento-ossifying fibromas, occur in 30%-40% of individuals with HPT-JT syndrome. Although benign, these tumors can be locally aggressive and may continue to enlarge if not treated. Approximately 20% of individuals with HPT-JT syndrome have kidney lesions, most commonly cysts; renal hamartomas and (more rarely) Wilms tumor have also been reported. Benign and malignant uterine tumors appear to be common in women with HPT-JT syndrome. Parathyroid carcinoma. Most parathyroid carcinomas are functional, resulting in hyperparathyroidism and a high serum calcium level; however, nonfunctioning parathyroid carcinomas are also rarely described in individuals with a CDC73-related disorder. A germline CDC73 pathogenic variant has been identified in 20%-29% of individuals with apparently sporadic parathyroid carcinoma. Familial isolated hyperparathyroidism (FIHP). FIHP is characterized by primary hyperparathyroidism without other associated syndromic features. Individuals with CDC73-related FIHP tend to have a more severe clinical presentation and younger age of onset than individuals with FIHP in whom a CDC73 pathogenic variant has not been identified. [from GeneReviews]

Hereditary papillary renal cell carcinoma is characterized by the development of multiple, bilateral papillary renal tumors (Zbar et al., 1995). The transmission pattern is consistent with autosomal dominant inheritance with incomplete penetrance. Papillary renal cell carcinoma is histologically and genetically distinct from 2 other forms of inherited renal carcinoma, von Hippel Lindau disease (193300), caused by mutation in the VHL gene (608537) on chromosome 3, and a form associated with the chromosome translocation t(3;8), as described by Cohen et al. (1979). Bodmer et al. (2002) reviewed the molecular genetics of familial and nonfamilial cases of renal cell carcinoma, including the roles of VHL, MET, and translocations involving chromosomes 1, 3, and X. For background information and a discussion of genetic heterogeneity of nonpapillary renal cell carcinoma, see RCC (144700). See also a hereditary syndrome of predisposition to uterine leiomyomas and papillary renal cell carcinoma (HLRCC; 150800) caused by germline mutation in the FH gene (136850). [from OMIM]

The presence of renal cell carcinoma in the renal papilla. [from HPO]