CaseHCM006: 15 yrs report, Vietnam, Asian
DiseaseAssertion: Hypertrophic Cardiomyopathy
FamilyInfo: Family history of sudden cardiac death
CasePresentingHPOs: HP:0002875, HP:0001712, HP:0031295, HP:0011103, HP:0001653 (Exertional dyspnea, Left ventricular hypertrophy, Left atrial enlargement, Abnormality of the left ventricular outflow tract, Mitral regurgitation)
HPOsFreeText: Maximal LV thickness 33 mm
CaseNotHPOs: HP:0005110, HP:0001297, HP:0004756 (Atrial fibrillation, Stroke, Ventricular tachycardia)
NotHPOsFreeText: N/A
CaseAddInfo: N/A
CasePreviousTesting: The gene panel included 10 sarcomeric genes (MYH7, MYBPC3, TNNT2, TNNI3, TPM1, MYL2, MYL3, ACTC1, TNNC1, MYH6), 9 genes encoding Z-disk components and Ca2+ homeostasis factors (LDB3, CSRP3, TCAP, VCL, ACTN2, MYOZ2, NEXN, JPH2, PLN), and 4 genes involved in HCM phenocopies (GLA, LAMP2, PRKAG2, TTR), All probands had left ventricular wall thickness >= 15 mm and no other diseases that can cause secondary hypertrophy
CaseGenotypingMethod: The coding region, flanking sequences, and untranslated regions of each gene were enriched by LC-PCR, amplified, and sequenced on the Illumina MiSeq or MiniSeq platform. Identified variants were then filtered for pathogenicity and confirmed by Sanger sequencing.
Variant: NM_000257.4(MYH7):c.2207T>C (p.Ile736Thr)
ClinVar: 164342 https://www.ncbi.nlm.nih.gov/clinvar/variation/164342/
gnomAD: Not in gnomAD
Multiple Gene Variants
(1) NEXN Variant
Variant: NM_144573.3(NEXN):c.835C>T (p.Arg279Cys)
ClinVar: 30994 https://www.ncbi.nlm.nih.gov/clinvar/variation/30994/
gnomAD: 0.006303, http://gnomad.broadinstitute.org/variant/1-78392548-C-T