| A hereditary cancer syndrome characterized by a predisposition to cutaneous and uterine leiomyomas and, in some families, to renal cell cancer. Disease onset can occur at any age, but is more common in young adults and elderly patients. Multiple or single benign cutaneous leiomyomas are common. Uterine leiomyomas (present in 77% of women with HLRCC), also known as fibroids, usually appear around the age of 30. Caused by a mutation in the FH gene (1q42.1) encoding the enzyme fumarate hydratase (FH) that metabolizes the fumarate produced during the purine nucleotide cycle and arginine synthesis in the cytoplasm. Mode of inheritance is autosomal dominant. |
