PatientID: 1

KindredID: 5

Case: F, 13Y0M, Ethnicity Unknown

DiseaseAssertion: VHL

FamilyInfo: Positive. The patient's mother (4) also carried this mutation and had a hemangioblastoma. The proband's aunt (5) was confirmed to have the mutation and had VHL presentations. The cousin (8) had the mutation but was asymptomatic. The grandfather (13) was inferred to have the mutation and had a hemangioblastoma. See Figure 2a for family pedigree.

CohortInfo: 20 unrelated VHL families from an ethnically diverse cohort containing both affected and unaffected individuals.

CasePresentingHPOs: HP:0010797, HP:0001732 (hemangioblastoma, abnormality of the pancreas)

CaseHPOFreeText: The patient presented with a hemangioblastoma and abnormality of the pancreas at age 10.

CaseNotHPOs: HP:0009711, HP:0005584, HP:0002666, HP:0000077 (retinal capillary hemangioma, renal cell carcinoma, pheochromocytoma, abnormality of the kidney)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: 31368132

SupplementalData: Supplementary file 1.

Variant: p.F136Lfs*23 (c.408delT)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 43601 https://www.ncbi.nlm.nih.gov/clinvar/variation/43601/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: minus_1_frameshift_variant

CivicName: F136Lfs*23 (c.408delT)

MultipleGeneVariants: N/A

20 vHL families were retrospectively identified in SickKids Genetics and Cancer Genetics Program SHIRE genetics database, with data entered between 30 August 1984 and 8 August 2016. Family 5 was found with this frameshift mutation, c.408delT in the VHL gene . The female proband (ID 1) was found with hemangioblastoma, abnormality of the pancreas and had a VHL age of onset of 10Y and her last known age was 13Y. Her mother (ID 4) was found with hemangioblastoma at 37Y and was 39Y at the time of the study. Her aunt (ID 5) was found with hemangioblastoma, retinal capillary hemangioma, abnormality of the kidney, abnormality of the pancreas, had a VHL age of onset of 29Y and her last known age was 37Y. Her male cousin (ID 8) was 5Y and had no manifestations. Her grandfather (ID 13) was not genetically confirmed with the mutation, but was found with hemangioblastoma at 57Y and was 63Y at the time of the study. This family was later published in 31368132.