Case#: Patient 3, male, 21 year old, ethnicity unknown

DiseaseAssertion: Pompe disease

FamilyInfo: No family history of muscle disease

CasePresentingHPOs: HP:0003236, HP:0100284

(Elevated serum creatine kinase, EMG: myotonic discharges

CaseHPOFreeText: Mild weakness (4/5) of iliopsoas muscles

Myotonic discharges in the lumbar paraspinal muscles

Elevated aspartate aminotransferase of 172 I/U ( Normal range 19–55 I/U)

Elevated alanine aminotransferase of 203 I/U (Normal range 19–72 I/U)

Serum CK was elevated at 1,373 U/L (normal range 70–185 U/L)

CaseNotHPOs:

CaseNotHPOFreeText: Normal alkaline phosphatase and γ-glutamyl transpeptidase levels.

Liver ultrasound and biopsy at an outside facility were normal

CasePreviousTesting: GAA level was 1.4 pmol/punch/h (normal range 10–49 pmol/punch/h)

Variant 1: NM_000152.5(GAA):c.-32-13T>G

ClinVar: 4027

CAID: CA116606

gnomAD: Hughest population MAF= 0.005541 (Ashkenazi Jewish)

Variant 2: NM_000152.5(GAA):c.877G>A (p.Gly293Arg)

ClinVar: 4036

CAID: CA116622

gnomAD: Highest population MAF= 0.00005704 (Latinos)

ParentalGenotype:N/A

PreviouslyPublished:N/A