PatientID: II-2

KindredID: Family B

Case: F, 20Y0M, Ethnicity unknown

DiseaseAssertion: VHL

FamilyInfo: Family positive pedigree showing patient’s father with RCC and CNS hemangioblastoma; as well as 2 siblings: brother and sister with CNS/spinal and retinal hemangioblastomas

CasePresentingHPOs: HP:0010797; HP:0009711 (hemangioblastoma; retinal capillary hemangioblastoma)

CaseHPOFreeText: born with oculoauriculo-vertebral (Goldenhar) syndrome (has an asymmetrical face, coloboma at the right optic nerve with secondary amblyopia in her right eye, and a VA of hand motion). Her right eye was also treated for a peripheral retinal hemangioblastoma. She suffers from a small CNS hemangioblastoma. She has had surgery for multiple skin tags on the left side of her face, bilateral epibulbar lipodermoids and right eyelid coloboma

CaseNotHPOs: HP:0005584; HP:0002666 (renal cell carcinoma, pheochromocytoma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.R79P (c.236G>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: CA351749311 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.236G%3EC

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transversion

CivicName: R79P (c.236G>C)

MultipleGeneVariants: N/A

One hundred and sixteen unrelated VHL disease patients have been investigated by molecular genetic analysis. Twenty-two of these were previously shown to have germline deletions on Southern analysis, and in the present study the remaining 94 patients were screened for intragenic mutations via SSCP and heteroduplex analysis of 855 bp of the VHL coding sequence and 800 bp of the 3' UTR. An intragenic mutation was identified in 55 (59%) out of 94 patients without germline deletions on Southern analysis. In all patients with multiple affected family members the missense mutation segregated with the disease. Large deletions or intragenic mutations predicted to cause a truncated protein were found in 36 of 53 families without pheochromocytoma (VHL type 1) and 2 of 12 families with pheochromocytoma (VHL type 2). This study also investigated the frequency of different mutation classes between kindreds with and without pheochromocytoma. The p.R79P (c.236G>C) variant (noted as p.R150P (c.449G>C) in the paper due to a difference in reference transcript used) was found in at least one patient in kindred 150. No familial phenotypic information could be inferred from the paper.

PatientID: II-1

KindredID: Family B

Case: M, 23Y0M, Ethnicity unknown

DiseaseAssertion: VHL

FamilyInfo: Family positive pedigree showing patient’s father with RCC and CNS hemangioblastoma; as well as 2 sisters with CNS/spinal and retinal hemangioblastomas

CasePresentingHPOs: HP:0010797; HP:0009711 (hemangioblastoma; retinal capillary hemangioblastoma)

CaseHPOFreeText: underwent surgery for multiple CNS hemangioblastomas at the age of 15, and at the same age multiple peripheral retinal hemangioblastomas were found in his right eye, which were treated successfully with laser photocoagulation and cryotherapy. At the age of 20, he developed a large peripheral retinal hemangioblastoma in his left eye, which was treated successfully with cryotherapy.

CaseNotHPOs: HP:0005584; HP:0002666 (renal cell carcinoma, pheochromocytoma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.R79P (c.236G>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: CA351749311 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.236G%3EC

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transversion

CivicName: R79P (c.236G>C)

MultipleGeneVariants: N/A