Case45

HPOsFreeText: See Group Phenotypes

CasePreviousTesting: Sanger sequencing

CaseMethod1: Sanger sequencing and PCR Amplification

CaseMethod2: Whole Exome Sequencing (WES)

CaseGenotypingMethod: Patients were previously confirmed with Pompe disease by Sanger sequencing to capture the pathogenic variants. The process was repeated as part of the study taking care to amplify the coding regions and exon/intron boundaries to compare with the WES results afterwards.

Variant1: NM_000152.4:c.525delT (p.Glu176Argfs*45)

ClinVar: 4033 https://www.ncbi.nlm.nih.gov/clinvar/variation/4033/

gnomAD: European (Non-Finnish) 1.880e-4, Overall 9.959e-5 http://gnomad.broadinstitute.org/variant/17-78078909-CT-C

Variant2: NM_000152.4:c.1880C>T (p.Ser627Phe)

CAID: CA294896504 https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvs=NM_000152.4%3Ac.1880C%3ET

gnomAD: Not in gnomAD

CaseAddInfo: Infantile Onset Pompe Disease

Case68

HPOsFreeText: See Group Phenotypes

CasePreviousTesting: Sanger sequencing

CaseMethod1: Sanger sequencing and PCR Amplification

CaseMethod2: Whole Exome Sequencing (WES)

CaseGenotypingMethod: Patients were previously confirmed with Pompe disease by Sanger sequencing to capture the pathogenic variants. The process was repeated as part of the study taking care to amplify the coding regions and exon/intron boundaries to compare with the WES results afterwards.

Variant1: NM_000152.4:c.1880C>T (p.Ser627Phe)

CAID: CA294896504 https://reg.clinicalgenome.org/redmine/projects/registry/genboree_registry/allele?hgvs=NM_000152.4%3Ac.1880C%3ET

gnomAD: Not in gnomAD

Variant2: NM_000152.4:c.-32-13T>G

ClinVar: 4027 https://www.ncbi.nlm.nih.gov/clinvar/variation/4027/

gnomAD: Ashkenazi Jewish 5.541e-3, Overall 3.401e-3 http://gnomad.broadinstitute.org/variant/17-78078341-T-G

CaseAddInfo: Adult Late Onset Pompe Disease

PatientF1P4: Male, birth onset, prenatal diagnosis, Caucasian

HPOsFreeText: IOPD was confirmed with decreased acid GAA on a lymphocyte assay (6 nmol/hr/mg, control 36 nmol/hr/mg) and on a foreskin fibroblast sample,

CaseAddInfo: First cousin twice removed of F1P1, Mother carries both c.1880C>T and VUS c.1642G>T mutations in cis

PatientF1P1: Female, 30 years onset, 40 years diagnosis, Caucasian

CasePresentingHPOs: HP:0007340, HP:0002172 (Leg weakness, Postural instability)

HPOsFreeText: History of hyperCKemia greater than 1,000 U/L (control 30–220 U/L), Showed deficient muscle acid GAA activity (0.05 µmol/min/g, control >0.42 µmol/min/g)

CaseAddInfo: First cousin twice removed of F1P3, Proband