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Molecular characterization and ophthalmic investigation of a large family with type 2A Von Hippel-Lindau Disease
Journal article   Open access   Peer reviewed

Molecular characterization and ophthalmic investigation of a large family with type 2A Von Hippel-Lindau Disease

Richard C Allen, Andrew R Webster, Ruifang Sui, Jeremiah Brown, Christine M Taylor and Edwin M Stone
Archives of ophthalmology (1960), Vol.119(11), pp.1659-1665
11/2001
DOI: 10.1001/archopht.119.11.1659
PMID: 11709017
url
https://doi.org/10.1001/archopht.119.11.1659View
Published (Version of record) Open Access

Abstract

Von Hippel-Lindau (VHL) disease is a dominantly inherited cancer syndrome. Since the identification of the VHL gene, at least 3 clinical-genetic subtypes of the disease have been recognized. To identify the specific abnormality in the VHL gene and to correlate it with the prevalence and severity of ocular involvement in a large family with VHL disease. A longitudinal clinical study and DNA analysis of 24 family members. All 14 affected family members exhibited a thymine-to-cysteine change at nucleotide 505 (T505C) in exon 1 of the VHL gene, consistent with the clinical diagnosis of VHL disease subtype 2A. Two asymptomatic gene carriers were also identified. Seventy-five percent (12/16) of the gene carriers had 1 or more ocular angiomas. The mean number of ocular angiomas per gene carrier was 3.3. Six eyes had optic disc angioma. Five gene carriers (31%) had lost vision because of angiomatosis. Cerebellar hemangioblastomas were present in 4 patients (25%) and pheochromocytomas in 11 (69%). No patient was found to have a renal cell carcinoma. The family shows a low susceptibility to renal carcinoma consistent with the clinical diagnosis of VHL disease type 2A. The prevalence and severity of ocular angiomatosis in this subtype do not significantly differ from those of the other more common subtypes of VHL. Recognition of the VHL disease 2A phenotype suggests the presence of a specific mutation (T505C) in the VHL gene. Confirmation of this genotype increases the clinician's ability to provide favorable prognostic information to affected family members.
Phenotype Polymerase Chain Reaction Humans Ligases - genetics Middle Aged Male von Hippel-Lindau Disease - classification DNA Primers - chemistry von Hippel-Lindau Disease - diagnosis Adrenal Gland Neoplasms - diagnosis Retinal Neoplasms - diagnosis DNA Mutational Analysis Germ-Line Mutation Adult Female Genes, Tumor Suppressor Hemangioma - genetics Pheochromocytoma - diagnosis Brain Neoplasms - diagnosis Brain Neoplasms - genetics Genotype von Hippel-Lindau Disease - genetics Hemangioma - diagnosis Ubiquitin-Protein Ligases Point Mutation Pedigree Pheochromocytoma - genetics Aged Von Hippel-Lindau Tumor Suppressor Protein Adrenal Gland Neoplasms - genetics Retinal Neoplasms - genetics Tumor Suppressor Proteins

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