Developing a Management Approach for Patients With "Late-Onset" Pompe Disease

Study Summary

This is an observational study with no study related treatment of interventions. The purpose of the study is to investigate and document disease specific clinical symptoms in newborns, infants and children with Pompe disease without cardiomyopathy identified in newborn screening(NBS). There will be baseline, months 6 and months 12 visits for infants and newborns (infants study). For children of ages 24 months to 54 months, there will be baseline, year 1 and year 2 visits (children study). The study has four goals: 1. To study and record disease specific clinical symptoms in newborns, infants and children with Pompe disease without cardiomyopathy (disease of the heart muscle) in the first year of life identified through newborn screening (NBS) 2. To devise an approach to characterize early musculoskeletal (muscles and joints) involvement in subjects with the "late-onset" GAA variant identified by NBS including ability to collect research information via virtual health platforms. 3. To determine criteria to start preventative therapies including enzyme replacement therapy (ERT) in patients with clinical features of Pompe disease identified via NBS 4. To document parental coping and anxiety/emotional distress overtime using quality of life questionnaires after a child is diagnosed with late onset Pompe disease via NBS

Primary Outcome

This outcome measure will be tested individually by a formal physical therapy assessment, Alberta Infant Motor Scale (AIMS), Gross Motor Functional Measure (GMFM), Hammersmith Functional Motor Scale Expanded(HFMSE),Modified Hammersmith Functional Motor Scale Extend(MHMFS-EXTEND), and Children's Hospital of Philadelphia Infant Test of Neuromuscular Disorders(CHOP INTEND) to give a combined assessment score.

Conditions Studied

Interventions

• OTHER Observational

Study Locations (1)