216 patients with clinically expected VHL disease due to family history or presence of VHL typical tumours were routinely examined in an eye centre in Germany between January 2019 and January 2020, majority of which were of European descent (~95%). Since data on the genotype–phenotype correlation of the onset of Retinal Hemangioblastoma (RH) is scarce in relation to VHL disease, this study wanted to inversitage the relationship between VHL gene variants (truncating vs single amino acid substitutions) and the ocular phenotype of the disease. 42 different rare VHL gene variants in 148 patients were detected - some of whom had RH and some who did not. Although date of onset of RH, as well as data on central nervous system haemangioblastomas (CNSH), pheochromocytoma/paraganglioma (PPGL), clear cell renal cell carcinoma (ccRCC) and pancreatic neuroendocrine neoplasm (PNEN) were collected, it was not reported on a per patient basis and therefore could not be discussed per variant. Out of the 3 patients with a p.L89P (c.266T>C) mutation, 67% (2/3) of individuals had RH while the other 33% (1/3) did not. No family information was provided.

GroupID/ KindredID: 8CE, 59CA, 21CE

DiseaseAssertion: VHL

GroupSize: N/A

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: N/A

GroupAgeRange: N/A

GroupInfo: This germline familial VHL mutation was taken from the Cambridge, Department of Pathology database and the Munich, university of Freiburg and Institute of Pathology database, with an unknown number of members belonging to Family IDs 8CE, 59CA, 21CE. Table 3 lists all ID and mutations associated with individuals possessing renal carcinoma, without pheochromocytoma.

GroupPresentingHPOs: HP:0005548 (renal cell carcinoma)

GroupHPOFreeText: Described as a VHL family with RCC, without pheochromocytoma. Other phenotypes are likely, however not detailed in this publication

GroupNotHPOs: HP:0002666 (pheochromocytoma)

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.L89P (c.266T>C)

LegacyVariant: p.L89P (c.479T>C)

CaseProblemVariantFreeText: N/A

ClinVarID: 182979 https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A

42 CNS hemangioblastoma samples were obtained from 31 patients, who were consecutively treated between 1993 and 1997 at the Department of Neurosurgery of the Freiburg University Medical Centre were analyzed for VHL mutations. Two patients of 17 presenting with VHL germline mutations presented with the L89P (c.266T>C) mutation (stated as c.479T>C in the paper which used the Latif sequence as reference). These patients were related but their relation is not made clear. Single strand conformation polymorphism and southern blotting for variant identification in the DNA found in blood samples. The patients were established as having VHL disease by standard of Neumann at al., 1987. Both patients presented with a single cerebellum tumors.

PatientID: IV-7

KindredID: 2

Case: F, 36Y0M, Mexican

DiseaseAssertion: VHL

FamilyInfo: This family included three affected individuals and two of them were studied. The proband (IV-6) was a 23-year-old woman who was previously diagnosed with VHL disease and had a tumor in the cerebellum; VA and IOP were normal and no ocular manifestations of the disorder were recorded at examination. Her 36-year-old sister (IV-7) had a spinal cord HB. None of them presented ocular symptoms. Remarkably, her 55-year-old mother (III-8) did not exhibit any clinical manifestation of the disease. Three of her maternal uncles (III-1, III-2 and III-3) presented with cerebellar HB and one of them also had a renal cell carcinoma; In addition, her maternal grandmother (II-2) and her maternal grandmother's sister (II-3) had unspecified CNS tumors.

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

CasePresentingHPOs: HP:0009713 (Spinal hemangioblastoma)

CaseHPOFreeText: Spinal cord hemangioblastoma.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Family pedigree (Figure 1 (b))

Variant: p.L89P (c.266T>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 182979, https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A

GroupID/ KindredID: VHL 3

DiseaseAssertion: assumed VHL

GroupSize: 11

GroupNumberMales: N/A

GroupNumberFemales: N/A

GroupEthnicity: German

GroupAgeRange: N/A

GroupInfo: 11 patients with the given mutation belonging to VHL family 3

GroupPresentingHPOs: HP:0009711; HP:0010797; HP:0000107; HP:0005584; HP:0001737 (retinal capillary hemangioma, hemangioblastoma, renal cyst, renal cell carcinoma, pancreatic cysts)

GroupHPOFreeText: retinal capillary hemangioma was found in 3 members, hemangioblastomas in 7 members, renal cyst in 7, renal cell carcinoma in 5, and pancreatic cysts in 6

GroupNotHPOs: N/A

GroupNotHPOFreeText: N/A

GroupPreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.L89P (c.266T>C)

CaseProblemVariantFreeText: N/A

LegacyVariant: p.L89P (c.479T>C)

ClinVarID: 182979 https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: N/A

gnomAD: N/A

VariantEvidence: See HaeIII digestion in Fig. 3b

MutationType: missense_variant; transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A

PatientID: V-3

KindredID: 2

Case: F, Age Unknown, Mexican

DiseaseAssertion: Asymptomatic

FamilyInfo: This family included three affected individuals and two of them were studied. The proband (IV-6) was a 23-year-old woman who was previously diagnosed with VHL disease and had a tumor in the cerebellum; VA and IOP were normal and no ocular manifestations of the disorder were recorded at examination. Her 36-year-old sister (IV-7) had a spinal cord HB. None of them presented ocular symptoms. Remarkably, her 55-year-old mother (III-8) did not exhibit any clinical manifestation of the disease. Three of her maternal uncles (III-1, III-2 and III-3) presented with cerebellar HB and one of them also had a renal cell carcinoma; In addition, her maternal grandmother (II-2) and her maternal grandmother's sister (II-3) had unspecified CNS tumors.

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

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Family pedigree (Figure 1 (b))

Variant: p.L89P (c.266T>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 182979, https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A

PatientID: IV-6 (Proband)

KindredID: 2

Case: F, 23Y0M, Mexican

DiseaseAssertion: VHL

FamilyInfo: This family included three affected individuals and two of them were studied. The proband (IV-6) was a 23-year-old woman who was previously diagnosed with VHL disease and had a tumor in the cerebellum; VA and IOP were normal and no ocular manifestations of the disorder were recorded at examination. Her 36-year-old sister (IV-7) had a spinal cord HB. None of them presented ocular symptoms. Remarkably, her 55-year-old mother (III-8) did not exhibit any clinical manifestation of the disease. Three of her maternal uncles (III-1, III-2 and III-3) presented with cerebellar HB and one of them also had a renal cell carcinoma; In addition, her maternal grandmother (II-2) and her maternal grandmother's sister (II-3) had unspecified CNS tumors.

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

CasePresentingHPOs: HP:0006880 (Cerebellar hemangioblastoma)

CaseHPOFreeText: Cerebellar hemangioblastoma.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: Family pedigree (Figure 1 (b))

Variant: p.L89P (c.266T>C)

LegacyVariant: N/A

CaseProblemVariantFreeText: N/A

ClinVarID: 182979, https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: N/A

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant;transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A

This study reports 1,548 germline and somatic mutations from 945 VHL families, including 30 previously unpublished kindreds from The Netherlands (six novel mutations). This mutation (c.266T>C) was detected by direct sequencing and MLPA in 2 VHL kindreds. It was found in a kindred with hemangioblastomas of the central nervous system, renal cell carcinoma, pancreatic and renal cysts (case no. 23530). ACMG evidence codes: 'PP2' because they observe a missense variant in a gene where missense variants are a common mechanism of disease, 'PP4' because the patient's phenotypes or family history are highly specific for a disease with single genetic etiology.

PatientID: 6

KindredID: 6

Case: F, 49Y0M, Ethnicity unknown

DiseaseAssertion: VHL

FamilyInfo: None

CasePresentingHPOs: HP:0030405 (pancreatic endocrine tumor)

CaseHPOFreeText: See Table 1 for more information

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

PreviouslyPublished: N/A

SupplementalData: N/A

Variant: p.L89P (c.266T>C)

CaseProblemVariantFreeText: N/A

LegacyVariant: N/A

ClinVarID: 182979 https://www.ncbi.nlm.nih.gov/clinvar/variation/182979/

CAID: CA020207 http://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvsOrDescriptor=NM_000551.3%3Ac.266T%3EC

gnomAD: N/A

VariantEvidence: N/A

MutationType: missense_variant; transition

CivicName: L89P (c.266T>C)

MultipleGeneVariants: N/A