Case#: Subject number 2(I), male, 10 days (start of ERT)

DiseaseAssertion: Infantile Onset Pompe disease

FamilyInfo: N/A

CasePresentingHPOs: HP:0200128 (biventricular hypertrophy), HP:0005165 (shortened PR interval), HP:0030234 (Highly elevated creatine kinase), HP:0001270 (motor delay)

CaseHPOFreeText: severe septal left ventricular hypertrophy and mildly hypertrophied right ventricle. CRIM positive.

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CasePreviousTesting: CK testing: 846 U/L (60–305 U/L is normal), AST: 189 U/L (30–100 U/L is normal), ALT: 91 U/L (7-50 U/L is normal), BNP: 1232.5 pg/mL (0.0–100.0 pg/mL), Hex4: 30.2 mmol/mol Creatinine (≤20 mmol/mol Creatinine is normal)

glucosidase activity: GAA activity #1 was 0.65 micromole/L/h and GAA activity #2 (NBS) 0.34 in dried blood spots (>2.10 micromole/L/h is normal). 0.4 in confirmatory testing (<3.88 is normal).

Variant 1: NM_000152.5(GAA):c.525delT

Variant 1 ClinVarID: 4033

Variant 1 CAid: CA220406

Variant 2: NM_000152.5(GAA):c.1694_1697delTCTC

Variant 2 ClinVarID: N/A

Variant 2 CAid: CA658795263

Zygosity: Compound heterozygous

ParentalGenotype: N/A

PreviouslyPublished: N/A