pheochromocytoma/paraganglioma syndrome 3 (MONDO_0011544) is an autosomal dominant tumor predisposition disorder caused by pathogenic variants in the SDHC gene, characterized by an increased risk of paraganglioma and pheochromocytoma, as well as an increased risk of renal cell carcinoma and gastrointestinal stromal tumors (GIST). Also known as: SDHC paraganglioma, SDHC-related tumor predisposition, paraganglioma caused by mutation in SDHC, paragangliomas 3, paragangliomas type 3.