PatientID: 29

KindredID: 1

Case: M, 10Y0M, Ethnicity Unknown

DiseaseAssertion: VHL

FamilyInfo: This patient was a member of family 1, where 14/32 total patients were diagnosed with VHL. One of which (I-32) was a mutational carrier with down syndrome. The other 13 patients had varying phenotypes, including adrenal pheochromocytoma, pancreatic endocrine tumors, liver and bone metastases, paraganglioma, cerebellar, spinal, and retinal hemangioblastomas, polycythemia, and chondrosarcoma. See Fig. 1 for family pedigree.

CasePresentingHPOs: HP:0006748 (adrenal pheochromocytoma)

CaseHPOFreeText: Patient presented with his initial VHL-related clinical manifestations at 10Y0M. She had adrenal pheochromocytoma and diagnosed with VHL subtype 2A (see table 1).

CaseNotHPOs: HP:0002668 (paraganglioma)

CaseNotHPOFreeText: Patient does not have paraganglioma.

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.V166F (c.496G>T)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 2224, https://www.ncbi.nlm.nih.gov/clinvar/variation/2224/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transversion

CivicName: V166F (c.496G>T)

MultipleGeneVariants: N/A

PatientID: 2

KindredID: 2

Case: M, 10Y6M, Ethnicity Unknown

DiseaseAssertion: adrenal pheochromocytoma

FamilyInfo: de novo mutation found: his parents were said to have tested negative for the mutation (neither parent had this R167W mutation). All other family history was negative.

CasePresentingHPOs: HP:0006748 (adrenal pheochromocytoma)

CaseHPOFreeText: this patient was described to be practically asymptomatic, with an incidental finding: Diagnosed with adrenal incidentaloma, he had intermittent abdominal pain for 6 months (beginning at age 10Y). CT scan showed a left adrenal solid tumor (3x3cm) with no calcifications; I-MIBG was normal; he underwent an adrenalectomy for this pheochromocytoma.

CaseNotHPOs: N/A

CaseNotHPOFreeText: brain and spinal cord MRI, ophthal-moscopy, whole body CT scan and ultrasonography of the testes, showed no abnormalities.

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

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

LegacyVariant: N/A

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: N/A

MutationType: missense_variant;transition

CivicName: R167W (c.499C>T)

MultipleGeneVariants: N/A

PatientID: II-2

KindredID: 1

Case: F, 10Y0M, Ethnicity Unknown

DiseaseAssertion: Adrenal pheochromoyctoma

FamilyInfo: The patient’s brother (II-1) was found to harbor the same germline mutation the patient harbored and had bilateral adrenal pheochromocytoma at 14Y. The same germline missense mutation was detected in another sister (II-4) with right adrenal pheochromocytoma and her asymptomatic daughter (III-1). The father was not available for genetic testing because he had died, apparently secondary to a hypertensive crisis. The five other family members which underwent genetic testing did not have the mutation.

CasePresentingHPOs: HP:0006748 (Adrenal pheochromocytoma)

CaseHPOFreeText: At 10Y, the patient reported palpitations, weight loss, diaphoresis, and shooting pain attacks. Her urinary metanephrines were elevated to 12.2 mg/g creatinine. A CT of the abdomen revealed a mass in the left adrenal gland. Histology and immunohistochemistry confirmed diagnosis of left adrenal pheochromocytoma. Additional screening revealed no other tumours, so this fit the criteria of VHL type 2C.

CaseNotHPOs: HP:0002668; HP:0012090; HP:0012210 (Paraganglioma, abnormal pancreas morphology, abnormal renal morphology)

CaseNotHPOFreeText: There were no lesions in the pancreas or the kidney, there was also no suggestion that the paraganglia would also be involved. Her MRI of the brain, and her echocardiogram were both normal.

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.V166F (c.496G>T)

LegacyVariant: N/A

ClinVarID: 2224, https://www.ncbi.nlm.nih.gov/clinvar/variation/2224/

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transversion

CivicName: V166F(c.496G>T)

MultipleGeneVariants: N/A