Family historyHis mother died of non-Hodgkin’s lymphoma, positive for B-cell markers at the age of 47 years, in 1993. Her maternal aunt had pheochromocytoma at the age of 56 years and breast cancer at 66 years. IHC for SDHB was preserved in her pheochromocytoma specimen. The proband’s sister was diagnosed with grade 3 estrogen positive (ER+) breast cancer at the age of 26 years and died at the age of 27 years, in 1999. Neither his sister nor mother had genetic testing.Genetic testingThe proband’s maternal aunt, who lived a significant distance away had genetic testing; no pathogenic mutation was detected in either BRCA 1 or BRCA2 genes. A variant identified in the VHL gene c.74C>T(p.Pro25Leu)
PatientID: N/A
KindredID: 1
Case: F, 66Y0M, Ethnicity Unknown
DiseaseAssertion: Assumed VHL
FamilyInfo: Patient’s nephew (index case) is a 52Y0M man diagnosed with five cancers (clear cell renal cancer, glioma, low-grade urothelial tumour, Cutaneous basal cell cancer, Multifocal bilateral papillary thyroid cancer) from the age of 40Y0M. The nephew had a heterozygous CHEK2 variant but no VHL mutation. Patient’s sister (mother of index case) died of non-Hodgkin’s lymphoma at 47Y0M in 1993. The patient’s niece (sister of index case) was diagnosed with breast cancer at the 26Y0M and died at 27Y0M in 1999. Neither the patient’s sister nor niece had genetic testing.
CasePresentingHPOs: HP:0002666; HP:0003002 (pheochromocytoma, breast carcinoma)
CaseHPOFreeText: Patient was diagnosed with pheochromocytoma at the age 56Y0M and breast cancer at age 66Y0M.
CaseNotHPOs: N/A
CaseNotHPOFreeText: N/A
CasePreviousTesting: next-generation sequencing for MAX, RET, SDHAF2, SDHB, SDHC, SDHD, TMEM127 and multiplex ligation-dependent probe amplification (MLPA) for VHL, SDHA, MAX, SDHB, SDHC and SDHC.
PreviouslyPublished: N/A
SupplementalData: N/A
Variant: p.P25L (c.74C>T)
LegacyVariant: N/A
CaseProblemVariantFreeText: N/A
ClinVarID: 93330, https://www.ncbi.nlm.nih.gov/clinvar/variation/93330/
CAID: N/A
gnomAD: 0.002988, https://gnomad.broadinstitute.org/variant/3-10183605-C-T
VariantEvidence: N/A
MutationType: missense varaint, transition
CivicName: P25L (c.74C>T)
MultipleGeneVariants: N/A