PatientID: 8

KindredID: 8

Case: M, 27Y0M, Ethnicity Unknown

DiseaseAssertion: assumed VHL

FamilyInfo: Positive family history for VHL.

CohortInfo: An international consortium registered patients with head and neck paragangliomas with VHL or RET gene mutations.

CasePresentingHPOs: HP:0009711; HP:0005584; HP:0002668; HP:0001737; HP:0002666 (retinal capillary hemangioma, renal cell carcinoma, paraganglioma, pancreatic cysts, pheochromocytoma)

CaseHPOFreeText: At 19Y (in 1997), he presented with headaches, ophthalmological examination showed a right retinal hemangioblastoma (treated by laser). 5 years later (age 24Y) he had a right nephrectomy and left nephron-sparing surgery for renal cell carcinoma. Age 27, a palpable mass on the left side of the neck. CT and MRI revealed a 4-cm carotid body tumor (paraganglioma). The patient also has pancreatic cysts. 

CaseNotHPOs: HP:0010797 (hemangioblastoma)

CaseNotHPOFreeText: MRI scan from case presenting headaches showed a normal CNS

CasePreviousTesting: RET

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: exon 2-3 deletion

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: exon_loss_variant

CivicName: EXON 2-3 DELETION

MultipleGeneVariants: N/A

PatientID: 125 (Second cousin)

KindredID: 18

Case: F, 52Y0M, Ethnicity Unknown

DiseaseAssertion: VHL

FamilyInfo: 11 members of this family tested positive for the c.712C>T/c.499C>T germline variant of the VHL gene. 14 members of this family were assumed to carry this variant due to family history/personal medical history. Members of this family range from asymptomatic to multi-organ involvement (pheochromocytoma, pancreatic and renal cysts/tumors and hemangioblastomas). The family was previously reported in PMID 3942913.

CasePresentingHPOs: HP:0009711; HP:0002666; HP:0005584 (Retinal capillary hemangioma, Pheochromocytoma, Renal cell carcinoma)

CaseHPOFreeText: This patient presented with retinal angioma (19Y). Age of diagnosis of pheochromocytoma and renal cell carcinoma is unknown.

CaseNotHPOs: HP:0000077; HP:0001732; HP:0010797 (Abnormality of the kidney, Abnormality of the pancreas, Hemangioblastoma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: 3942913 (some members of this family are previously reported (phenotypes only) but unable to match patients across papers with confidence)

SupplementalData: Supplementary Table 1.

Variant: p.R167W (c.499C>T)

LegacyVariant: c.712C>T

CaseProblemVariantFreeText: N/A

ClinVarID: 2218, https://www.ncbi.nlm.nih.gov/clinvar/variation/2218/

CAID: N/A

gnomAD: 0.000007954, https://gnomad.broadinstitute.org/variant/3-10191506-C-T?dataset=gnomad_r2_1

VariantEvidence: A point mutation (c.712C>T) was found. Being that this variant is out of bound with respect to the NM_000551.3 reference sequence, it was concluded that this variant is noted in the Latif et al. (1993) reference and was translated to c.499C>T (NM_000551.3).

MutationType: missense_variant;transition

CivicName: R167W (c.499C>T)

MultipleGeneVariants: N/A

PatientID: None

KindredID: B

Case: M, 27Y0M, Hungarian

DiseaseAssertion: VHL

FamilyInfo: The parents of the patient rejected clinical and genetic screening, whereas clinical screening in a younger brother of the index patient revealed no abnormality.

CasePresentingHPOs: HP:0009711, HP:0000107, HP:0001737, HP:0001901, HP:0006880 (retinal capillary hemangioma, renal cyst, pancreatic cysts, polycythemia, cerebellar hemangioblastoma)

CaseHPOFreeText: Retina involvement presented at age 19. The patient had cerebellar hemangioma as well as renal and pancreatic cysts at the age of 27 years.

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

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.R161* (c.481C>T)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 2217 https://www.ncbi.nlm.nih.gov/clinvar/variation/2217/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: stop_gained

CivicName: R161* (c.481C>T)

MultipleGeneVariants: N/A

PatientID: 10

KindredID: 10

Case: M, 22Y0M, Caucasian

DiseaseAssertion: VHL

FamilyInfo: Positive family history.

CohortInfo: Case series of 14 patients with definite or presumed von Hippel-Lindau disease and retinal vascular proliferation.

CasePresentingHPOs: HP:0002011, HP:0001732, HP:0007850, HP:0012210, HP:0009711 (Morphological central nervous system abnormality, abnormality of the pancreas, retinal vascular proliferation, abnormal renal morphology, retinal capillary hemangioma)

CaseHPOFreeText: At age 12, his left eye had a large juxtapapillary vascular complex extending from the nerve along the superior arcade that was associated with dense fibrovascular tissue. During the next 29 months, this fibrovascular complex enlarged, extending into the center of the macula and causing a decrease in visual acuity to 20/80. The patient underwent pars plana vitrectomy and membrane peel. When the patient was reexamined 7 years after his surgery, there was no recurrence of the lesion. In the patient's contralateral right eye, 3 typical peripheral RCHs were observed during this 7-year follow-up. At age 14 years, he was also noted to have a small patch of superficial retinal vessels in the inferior retinal quadrant near the equator of the right eye that resembled an arteriovenous anastomosis.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: Partial Deletion

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: N/A

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: deletion

CivicName:Null (Partial deletion)

MultipleGeneVariants: N/A