A previous study of 26 Japanese, VHL families was extended to 41 additional families. Germline mutations were detected in 55 of 77 Japanese families using SSCP, direct sequencing, and Southern Blot analysis of peripheral blood samples. The L178P (c.533T>C) germline mutation was found in a VHL type 1 patient presenting with CNS hemangioblastoma, retinal angioma and renal cell carcinoma (family ID 34). This family was previously reported in PMID 8634692.

A study investigated paraganglioma/pheochromocytoma tumors in a retrospective cohort and a prospective cohort. Some of these tumors were found with germline VHL mutations. Tumour ID 40 and ID 41 (both from a 15 years old patient presenting with multiple benign tumors), and ID 42 (from a 40 years old patient presenting with multiple benign tumors) were PCC and found with a germline mutation in the VHL gene p.Leu178Pro. It is not clear if tumour samples 40 and 41 were taken from the same patient at 2 different time points or different patients. Other phenotypic and demographic information was not available.

PatientID: 34

KindredID: 34

Case: Sex Unknown, Age Unknown, Japanese

DiseaseAssertion: VHL

FamilyInfo: N/A

CasePresentingHPOs: HP:0009711; HP:0005584; HP:0010797 (Retinal capillary hemangioma, Renal cell carcinoma, Hemangioblastoma)

CaseHPOFreeText: CNS hemangioblastoma, retinal angioma and RCC.

CaseNotHPOs: HP:0002666 (Pheochromocytoma)

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: 10761708

SupplementalData: N/A

Variant: p.L178P (c.533T>C)

LegacyVariant: p.L249P (c.746T>C)

CaseProblemVariantFreeText: N/A

ClinVarID: 428795, https://www.ncbi.nlm.nih.gov/clinvar/variation/428795/

CAID: N/A

gnomAD: N/A

VariantEvidence: Nucleotide deletion (i.e. 746T>C) coincides with legacy variant nomenclature (i.e. AF010238.1) and was mapped to c.533T>C (NM_000551.3).

MutationType: missense_variant;transition

CivicName: L178P (c.533T>C)

MultipleGeneVariants: N/A

PatientID: 40

GroupID/ KindredID: 40

Case: Sex Unknown, Age Unknown, Ethnicity Unknown

DiseaseAssertion: hemangioblastoma

FamilyInfo: N/A

CasePresentingHPOs: HP:0010797 (hemangioblastoma)

CaseHPOFreeText: other phenotypes unknown.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.L178P (c.533T>C)

LegacyVariant: p.L178P (c.746T>C)

CaseProblemVariantFreeText: N/A

ClinVarID: 428795 https://www.ncbi.nlm.nih.gov/clinvar/variation/428795/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transition

CivicName: L178P (c.533T>C)

MultipleGeneVariants: N/A

In a study of 426 unrelated VHL patients, 111 were discovered to have alterations in the VHL gene. 18 novel variants were identified in VHL patients, but none were present in 200 unaffected control individuals. DNA samples from peripheral blood leukocytes underwent polymerase chain reaction (PCR) amplification, denaturing high-performance liquid chromatography (DHPLC), and direct sequence analysis of the entire coding sequence and intron-exon boundaries. The L178P (c.533T>C) germline missense mutation of the VHL gene was found in a 14 yr old VHL patient with retinal hemangioblastomas, multiple pancreatic cysts or tumors, pheochromocytoma, and multiple renal cysts (index case 160).

PatientID: 42

KindredID: 42

Case: Sex Unknown, 40Y0M, Ethnicity Unknown

DiseaseAssertion: Assumed VHL

FamilyInfo: N/A

CasePresentingHPOs: HP:0002666 (Pheochromocytoma)

CaseHPOFreeText: Multiple benign PCC.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Patient information pulled from Supplemental Table 1a.

Variant: p.L178P (c.533T>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 428795, https://www.ncbi.nlm.nih.gov/clinvar/variation/428795/

CAID: N/A

gnomAD: N/A

VariantEvidence: Membrane CA9 immunostaining was observed.

MutationType: missense_variant;transition

CivicName: L178P (c.533T>C)

MultipleGeneVariants: N/A

PatientID: 40/41

KindredID: 40/41

Case: Sex Unknown, 15Y0M, Ethnicity Unknown

DiseaseAssertion: Assumed VHL

FamilyInfo: N/A

CasePresentingHPOs: HP:0002666 (Pheochromocytoma)

CaseHPOFreeText: Multiple benign PCC.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Patient information pulled from Supplemental Table 1a.

Variant: p.L178P (c.533T>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 428795, https://www.ncbi.nlm.nih.gov/clinvar/variation/428795/

CAID: N/A

gnomAD: N/A

VariantEvidence: Patient data is extracted from two rows assumed to be referring to the same patient (i.e. tumor samples 40 and 41 in Supplementary Table 1a). Carbonic anhydrase 9 (CA9) mRNA level of 795.70 (PCC) and 815.38 (PCC) were detected. Membrane CA9 immunostaining was observed in both PCC samples.

MutationType: missense_variant;transition

CivicName: L178P (c.533T>C)

MultipleGeneVariants: N/A