PatientID: IV-2

KindredID: 1

Case: M, 4Y0M, Mexican

DiseaseAssertion: VHL

FamilyInfo: Family composed of six affected individuals and three diseased subjects (III-2, III-3, III-4) were studied. III-4 (proband) presented with a CNS hemangioblastoma and a retinal hemangioblastoma. The mother (II-1) developed cerebellar, medullar and bilateral retinal HBs; two maternal aunts (II-2 and II-3) were affected by retinal and CNS HBs and unspecified renal tumors, whereas his grandfather (I-2) had unspecified abdominal tumors. All these relatives died in their early 30s. A 35-year-old sister (III-2) demonstrated cerebellar HB, right eye retinal HB and renal cell carcinoma, whereas a 32-year-old brother (III-3) presented with cerebellar HB, right eye retinal HB, renal cell carcinoma and pheochromocytoma. A mutation-carrier nephew (IV-2) presented only atrophy of the retinal pigment epithelium. All of these family members were found to have the R82P (c.245G>C) germline VHL variant. Eighteen additional healthy relatives were analyzed and tested negative for the mutation.

CohortInfo: Two families and one apparently non-familial case were studied at the Institute of Ophthalmology ‘Conde de Valenciana’ (Mexico City, Mexico).

CasePresentingHPOs: HP:0007722 (Retinal pigment epithelial atrophy)

CaseHPOFreeText: Atrophy of the retinal pigment epithelium.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Family pedigree (Figure 1 (a))

Variant: p.R82P (c.245G>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 526675, https://www.ncbi.nlm.nih.gov/clinvar/variation/526675/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transversion

CivicName: R82P (c.245G>C)

MultipleGeneVariants: N/A