PatientID: 8

KindredID: 8

Case: 10Y0M, Sex unknown, Chinese

DiseaseAssertion: VHL

FamilyInfo: None

CasePresentingHPOs: HP:0002666 (pheochromocytoma)

CaseHPOFreeText: isolated bilateral pheochromocytoma first presenting at 10Y

CaseNotHPOs: HP:0009715; HP:0005584; HP:0010797 (Papillary cystadenoma of the epididymis, renal cell carcinoma, hemangioblastoma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: SDHB/SDHD

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.R161Q (c.482G>A)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 182983 https://www.ncbi.nlm.nih.gov/clinvar/variation/182983/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transition

CivicName: R161Q (c.482G>A)

MultipleGeneVariants: N/A

PatientID: N/A

KindredID: 1

Case: F, 10Y0M, Ethnicity Unknown

DiseaseAssertion: Assumed VHL

FamilyInfo: No family history, authors indicate that the variant occurred de novo.

CasePresentingHPOs: HP:0007514; HP:0000017; HP:0004421; HP:0012594; HP:0002666; HP:0001920 (Edema of the dorsum of hands; Nocturia; Elevated systolic blood pressure; Moderate albuminuria; Pheochromocytoma; Renal artery stenosis)

CaseHPOFreeText: Patient presented with occasional high routine blood pressure at 10Y0M. She noted mild hand edema over the past days and reported recent nocturia. Physical examination appeared normal other than elevated blood pressure of 139/113 mm Hg. Urine tests showed moderate albuminuria (albumin-creatinine ratio of 50 mg/g), as well as high levels of noradrenaline and normetanephrine, suggestive of benign pheochromocytoma. Ultrasound showed normal kidney size and parenchyma, but color duplex sonography revealed increased flow rate of the left renal artery. This finding suggests renal artery stenosis. Magnetic Resonance Angiography of the kidney vessels showed a solid tumor that had cystic features. Tumor resection normalized blood pressure and pathologic examination of the removed tumor confirmed pheochromocytoma. Patient was diagnosed with secondary hypertension due to compression of renal vessels and catecholamine production by vHL-associated pheochromocytoma. Antihypertensive therapy with phenoxybenzamine as α blockade was initiated, along with subsequent expansion of the therapy with a β-blocker. Authors mention that the patient is in complete remission with no other manifestations of VHL disease and is receiving close follow-up.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.G104V (c.311G>T)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 223183, https://www.ncbi.nlm.nih.gov/clinvar/variation//223183/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transversion

CivicName: G104V (c.311G>T)

MultipleGeneVariants: N/A

PatientID: 5

KindredID: 7

Case: M, 17Y0M, Spanish

DiseaseAssertion: VHL

FamilyInfo: No family history, assumed de-novo, but unclear if parents were tested to confirm de-novo assertion.

CohortInfo: 36 pediatric patients with pheochromocytomas and/or parangangliomas.

CasePresentingHPOs: HP:0002666 (pheochromocytoma)

CaseHPOFreeText: The patient had a benign bilateral pheochromocytoma that was secreting norepinephrine at age 10. At age 17, the pheochromocytoma reoccured but this time was malignant and metastasized to the lungs.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: RET, SDHA, SDHB, SDHC, SDHD, SDHAF2, TMEM127, MAX

PreviouslyPublished: Yes source unknown.

SupplementalData: N/A

Variant: p.R167W (c.499C>T) *The authors of this paper have seemingly called the wrong protein change for this variant.

CaseProblemVariantFreeText: N/A

LegacyVariant: 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

VariantEvidence: N/A

MutationType: missense_variant; transition

CivicName: R167W (c.499C>T)

MultipleGeneVariants: N/A

PatientID: IV

KindredID: 3

Case: Sex Unknown, 21Y0M, Danish

DiseaseAssertion: VHL

FamilyInfo: 3 other family members presented with his VHL mutation. Patient 3-I was asymptomatic. Patients 3-II and 3-III both presented with pheochromocytoma at 15Y.

CasePresentingHPOs: HP:0002666; HP:0009711 (Pheochromocytoma, Retinal capillary hemangioma)

CaseHPOFreeText: Diagnosed with VHL at age 10Y. Presented with pheochromocytoma at 12Y and retinal hemangioblastoma at 10Y. Age at the end of study: 21Y.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.G93D (c.278G>A)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 496054, https://www.ncbi.nlm.nih.gov/clinvar/variation/496054/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transition

CivicName: G93D (c.278G>A)

MultipleGeneVariants: N/A