Case#: HCM516, male, 23 years,

DiseaseAssertion: HCM

FamilyInfo: Yes, father and mother has HCM

CasePresentingHPOs: syncope, chest tightness (HP:0001279, HP:0031352)

CaseHPOFreeText: inverted T-waves, ST-segment depression, 28mm MLVWT, 67% LVE F, 0.64 E/A ratio, LVOT-PG 44mm

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

CaseGenotypingMethod: sequencing, physical examination, ECG, 3D modeling, statistical analysis

MultipleGeneVariants:

(1) Variant: NM_000257.4(MYH7):c.2631G>A (p.Met877Ile)

ClinVar: 955476 https://www.ncbi.nlm.nih.gov/clinvar/variation/955476/

CAID: N/A

gnomAD: absent

(2) Variant: NM_000257.4(MYH7):c.3134G>A (p.Arg1045His)

ClinVar: 651054 https://www.ncbi.nlm.nih.gov/clinvar/variation/651054/

CAID: N/A

gnomAD: absent

Case#: male, 43 yrs,

DiseaseAssertion: FDCM

FamilyInfo: Family B; sister also proband; brother died of SCD; daughter and father asymptomatic

CasePresentingHPOs: HP:0012250 (ST segment depression)

CaseHPOFreeText: severe cardiac enlargement, increased LVEDD (77.8 mm), decreased LVESD (69.8 mm), decreased LVEF (21% < 50%), heart rate 78 beats/min, widened QRS complex (120 ms > 110 ms)

CaseNotHPOs:

CaseNotHPOFreeText:

CasePreviousTesting: N/A

CaseGenotypingMethod: Sanger sequencing, Genome Analyzer IIx, ECG,

Variant: NM_000257.4(MYH7):c.3134G>A (p.Arg1045His)

ClinVar: 651054 https://www.ncbi.nlm.nih.gov/clinvar/variation/651054/

CAID: N/A

gnomAD: absent

Case#: female

DiseaseAssertion: FDCM

FamilyInfo: Family B; brother also proband; brother died of SCD, niece and father asymptomatic

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: N/A

CaseGenotypingMethod: Sanger sequencing, Genome Analyzer IIx, ECG,

Variant: NM_000257.4(MYH7):c.3134G>A (p.Arg1045His)

ClinVar: 651054 https://www.ncbi.nlm.nih.gov/clinvar/variation/651054/

CAID: N/A

gnomAD: absent