Patients with ELSTs were identified and included in the International Endolymphatic Sac Tumor Registry. The registry contained 93 patients as of July 2014, and of those, 25 were sporadic, and 68 associated with VHL. Patients with ELSTs and clinically confirmed diagnoses of VHL were included in this study. Statistics of this VHL subgroup are as follows: mean age 30, 62% female, 91% symptomatic, 54% with retinal angioma, 72% with CNS hemangioblastoma, 46% with renal cell carcinoma, 19% with pheochromocytoma, and 12% with pancreatic neuroendocrine tumour. In the data from this study, only endolymphatic sac tumours can be confirmed as a phenotype for this mutation (c.583C>T), which was found in 2 individuals from France.


2 affected; 2 rHAB, 1 cHAB, 1 pheo between 1994 and 2001, the Dutch VHL working group conducted DNA analysis on 146 probands with VHL-associated manifestations. DNA of probands was extracted from peripheral blood samples. Exons 1, 2 and 3 of the VHL gene and their flanking untranslated and intronic coding sequences were amplified by PCR and subjected to semi-automated sequence analysis. Screening for structural rearrangements, including deletions, involving the VHL gene was performed by Southern blot analysis and the multiplex ligation-dependent probe amplification (MLPA) assay. Deletions encompassing the entire VHL gene were confirmed by FISH analysis on lymphocytes from affected individuals. VHL mutations were identified in 43 families. Family 24 has 2 affected members. Genetic analysis reveals mutation Q195*(c.583C>T) in the VHL gene. The patients have a family history of VHL disease. Of the 2 affected members, 2 members had retinal capillary hemangioma, 1 member had CNS hemangioblastoma, 1 member had pheochromocytoma. ACMG: 'PP4' because the patient's phenotype and family history are highly specific for a disease with single genetic etiology.

GroupID/ KindredID: VHL 56

DiseaseAssertion: assumed VHL

GroupSize: 2

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: German

GroupAgeRange: N/A

GroupInfo: 2 patients with the given mutation belonging to VHL family 56

GroupPresentingHPOs: HP:0009711; HP:0010797 (retinal capillary hemangioma, hemangioblastoma)

GroupHPOFreeText: both (2) patients have retinal angioma and hemangioblastomas

GroupNotHPOs: N/A

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.Q195* (c.583C>T)

CaseProblemVariantFreeText: N/A

LegacyVariant: p.Q195* (c.796C>T)

ClinVarID: 428794 https://www.ncbi.nlm.nih.gov/clinvar/variation/428794/

CAID: CA70052558 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.583C%3ET

gnomAD: N/A

VariantEvidence: allele-specific oligonucleotide (ASO) probes and hybridization conditions confirmed

MutationType: missense_variant; transition

CivicName: Q195* (c.583C>T)

MultipleGeneVariants: N/A

GroupID/ KindredID: 23

DiseaseAssertion: VHL

GroupSize: 2

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: N/A

GroupAgeRange: N/A

GroupInfo: Described are 2 patients with this familial VHL mutation. They belong to family 23 and have the germline VHL mutation of c.583C>T

GroupPresentingHPOs: HP:0009711; HP:0010797; HP:0002666 (retinal capillary hemangioma, hemangioblastoma, pheochromocytoma)

GroupHPOFreeText: 2 familial patients affected; 2 rHAB (retinal hemangioblastoma), 1 cHAB (central nervous system hemangioblastoma), 1 pheochromocytoma.

GroupNotHPOs: HP:0005584; HP:0001737 (renal cell carcinoma, pancreatic cysts)

GroupNotHPOFreeText: None have the above manifestations

GroupPreviousTesting: N/A

PreviouslyPublished: Previously reported, HGMD (Human Gene Mutation Database: http://uwcmml1s.uwcm.ac.uk/uwcm/mg/search/120488.html)

SupplementalData: N/A

Variant: p.Q195* (c.583C>T)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVar: 428794 https://www.ncbi.nlm.nih.gov/clinvar/variation/428794/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: stop_gained

CivicName: Q195* (c.583C>T)

MultipleGeneVariants: N/A

PatientID: 262

KindredID: 262

Case: Sex Unknown, 54Y0M, Ethnicity Unknown

DiseaseAssertion: VHL

FamilyInfo: Positive family history for VHL.

CasePresentingHPOs: HP:0009711, HP:0010797 (retinal capillary hemangioma, hemangioblastoma)

CaseHPOFreeText: N/A

CaseNotHPOs: HP:0001737, HP:0002666, HP:0006770, HP:0000107 (pancreatic cysts, pheochromocytoma, clear cell renal cell carcinoma, renal cyst)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Table S1, S2, S3.

Variant: p.Q195* (c.583C>T)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 428794 https://www.ncbi.nlm.nih.gov/clinvar/variation/428794/

CAID: CA70052558 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.583C%3ET

gnomAD: N/A

VariantEvidence: N/A

MutationType: stop_gained

CivicName: Q195* (c.583C>T)

MultipleGeneVariants: N/A

GroupID: 35

DiseaseAssertion: VHL

GroupSize: 2

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: N/A

GroupAgeRange: N/A

GroupInfo: Two registrants from France both have the same mutation of c.583C>T.

GroupPresentingHPOs: HP:0030393 (Endolymphatic sac tumor)

GroupHPOFreeText: N/A

GroupNotHPOs: N/A

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.Q195* (c.583C>T)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 428794 https://www.ncbi.nlm.nih.gov/clinvar/variation/428794/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: stop_gained

CivicName: Q195* (c.583C>T)

MultipleGeneVariants: N/A