Case#: 1. Patient II-4 43 years

DiseaseAssertion: Hypertrophic cardiomyopathy and left ventricular noncompaction

FamilyInfo: Several family members have heart disease. One relative died from cardiac arrest at age 50.

ParentalTesting: NR

CasePresentingHPOs: NR

CaseHPOFreeText: The patient had thickened heart muscle, abnormal heartbeats, and extra ridges and deep spaces in the heart muscle.

CaseNotHPOs: NR

CaseNotHPOFreeText: NR

CasePreviousTesting: ECG, heart monitoring, heart ultrasound, and genetic testing

Genotyping Method: Next- generation sequencing and sanger sequencing

FunctionalAnalysis: computer testing suggested the ACTC1 gene change could weaken the protein

Variant: NM_005159.4:c.62C>T

Clinvar: 410264

CAID: CA16614451

gnomAD: NR

AdditionalInfo: His heart pumping ability was 55%. This article reported changes in his heart muscle cells.

Case#: 2 Patient II-5 46 years old

DiseaseAssertion: HCM and LVNC

FamilyInfo: Several family members have heart disease. One relative died from cardiac arrest at age 50.

ParentalTesting: NR

CasePresentingHPOs: NR

CaseHPOFreeText: The patient had thickened and enlarged heart muscle, abnormal heartbeats, and deep spaces in his heart muscle. He als had temporary episodes of reduced blood flow to the brain.

CaseNotHPOs: NR

CaseNotHPOFreeText: NR

CasePreviousTesting: ECG, heart monitoring, heart ultrasound, heart MRI, heart biopsy and genetic testing

Genotyping Method: NGS and sanger sequencing

FunctionalAnalysis:computer testing suggested the ACTC1 gene change could weaken the protein.

Variant: NM_005159.4:c.62C>T

Clinvar: 410264

CAID: CA16614451

gnomAD: NR

AdditionalInfo: His heart pumping ability was 30%. He received a defibrillator and was considered for a heat transplant. He also had a second gene change in TTN.

Case#: 3 Patient II-1 10 years

DiseaseAssertion: left ventricular noncompaction

FamilyInfo: Several family members have heart disease. One relative died from cardiac arrest at age 50.

ParentalTesting: NR

CasePresentingHPOs: NR

CaseHPOFreeText: The patient had extra ridges and deep spaces in his heart muscle. His ECG also showed changes in his heart's electrical activity.

CaseNotHPOs: NR

CaseNotHPOFreeText: Normal heart muscle thickness and normal heart pumping ability.

CasePreviousTesting: ECG, heart monitoring, heart ultrasound, heart biopsy and genetic testing

Genotyping Method: NGS and sanger sequencing

FunctionalAnalysis:computer testing suggested the ACTC1 gene change could weaken the protein.

Variant: NM_005159.4:c.62C>T

Clinvar: 410264

CAID: CA16614451

gnomAD: NR

AdditionalInfo: His heart pumping ability was 63%.He received medication and remained stable during follow up.

Case#: 4 Patient III-2 14 years

DiseaseAssertion: HCM and LVNC

FamilyInfo: Several family members have heart disease. One relative died from cardiac arrest at age 50.

ParentalTesting: NR

CasePresentingHPOs: NR

CaseHPOFreeText: The patient had thickened heart muscle extra ridges and deep spaces in his heart, and episodes of fast or abnormal hearbeats.

CaseNotHPOs: NR

CaseNotHPOFreeText: Heart MRI did not show sign of heart muscle scarring

CasePreviousTesting: ECG, heart monitoring, heart ultrasound, heart biopsy and genetic testing

Genotyping Method: NGS and sanger sequencing

FunctionalAnalysis:computer testing suggested the ACTC1 gene change could weaken the protein.

Variant: NM_005159.4:c.62C>T

Clinvar: 410264

CAID: CA16614451

gnomAD: NR

AdditionalInfo: His heart pumping ability was 60%.He received medication and remained stable during follow up.