KindredID: 99

GroupID: 30

GroupSize: Unknown

GroupNumberMales: Unknown

GroupNumberFemales: Unknown

GroupEthnicity: Unknown

GroupAgeRange: Unknown

DiseaseAssertion: VHL

GroupInfo: Kindred no. 99 describes a family where at least one member (unspecified how many) had this mutation in the VHL gene. No phenotypic information is listed for this kindred.

GroupPresentingHPOs: N/A

GroupHPOFreeText: No phenotypic information is listed for this kindred.

GroupNotHPOs: N/A

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: L153Cfs*6 (c.457del)

LegacyVariant: p.224fs (c.670delC)

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: CA432421920

gnomAD: N/A

VariantEvidence: N/A

MutationType: minus_1_frameshift_variant

CivicName: L153fs (c.457delC)

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 L153Cfs*6 (c.457del) deletion (noted as p.224fs (c.670delC) in the paper due to a difference in reference transcript used) was found in at least one patient in kindred 41, and at least one patient in kindred 99. Pheochromocytoma was not observed in any members of kindred 41 (implying the affected patient(s) had VHL disease type 1). No familial phenotypic information could be inferred from the paper for kindred 99.

GroupID/ KindredID: 41CA

DiseaseAssertion: VHL

GroupSize: N/A

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: N/A

GroupAgeRange: N/A

GroupInfo: This germline familial VHL mutation was taken from the Cambridge, Department of Pathology database, with an unknown number of members belonging to Family ID 41CA. Table 3 lists all ID and mutations associated with individuals possessing renal carcinoma, without pheochromocytoma.

GroupPresentingHPOs: HP:0005548 (renal cell carcinoma)

GroupHPOFreeText: Described as a VHL family with RCC, without pheochromocytoma. Other phenotypes are likely, however not detailed in this publication

GroupNotHPOs: HP:0002666 (pheochromocytoma)

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.L153Cfs*6 (c.457delC)

LegacyVariant: FS (c.670delC)

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: CA432421920 https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.457delC

gnomAD: N/A

VariantEvidence: This paper declares this variant is predicted to compromise the Elongin-binding site by truncating the protein.

MutationType: minus_1_frameshift_variant

CivicName: L153fs (c.457delC)

MultipleGeneVariants: N/A

Germline mutational data on VHL was gathered from various countries to assess variation in germline mutations that produce disease within different populations. Families were grouped according to three possible outcomes of disease: renal cell carcinoma without pheochromocytoma, renal cell carcinoma with pheochromocytoma, or pheochromocytoma alone. SSCP and denaturing gradient gel electrophoresis identified mutations in 300/469 (63%) of families affected with VHL. This germline familial VHL mutation (L153fs (c.457delC)) was taken from the Cambridge, Department of Pathology database. It had an unknown number of members belonging to Family ID 41CA, reported in Table 3, as being found in VHL families without pheochromocytoma, and with renal cell carcinoma. Additionally, it was reported in table 5, specified as families without detailed clinical information, under family ID 99CA. It was reported in the paper as c.670delC due to a difference in transcript reference.