GBE Deficiency (GSD IV and APBD) Natural History Study
Glycogen Storage Disease Type IVAdult Polyglucosan Body Disease3 moreCollection and review of clinical information related to glycogen branching enzyme (GBE) deficiency, diagnosed as Glycogen Storage Disease Type IV (GSD IV) or Adult Polyglucosan Body Disease (APBD generated during clinic visits.
Identification and Characterization of Novel Non-Coding Variants That Contribute to Genetic Disorders...
Genetic DiseaseInborn Errors of Metabolism3 moreThe goal of this study is to identify and characterize novel non-coding and splicing variants that may contribute to genetic disorders. We will particularly focus on patients with a diagnosed genetic disorder that has inconclusive genetic findings.
GSD VI and GSD IX Natural History
Glycogen Storage Disease VIGLYCOGEN STORAGE DISEASE IXa15 moreCollection and review of clinical information related to Glycogen Storage Disease Type VI (GSD VI) OR Glycogen Storage Disease Type IX (GSD IX) generated during clinic visits.
A Noninferiority Study of Alglucosidase Alfa Manufactured at the 160 L and 4000 L Scales in Treatment...
Pompe Disease (Infantile-Onset)Glycogen Storage Disease Type II (GSD II)2 moreA study to demonstrate comparable safety, efficacy, and pharmacokinetics (PK) of alglucosidase alfa manufactured at the 160 litre (L) and 4000 L scales in participants who had been diagnosed with infantile-onset Pompe disease. Participants were treated with alglucosidase alfa 160 L scale product in the United States (US) and 4000 L scale product in the regions outside the US.
Study of Long-Term Safety and Efficacy on Gene Therapy in Glycogen Storage Disease Type Ia
Glycogen Storage Disease Type IAVon Gierke's Disease (GSD Type Ia)The primary objective of this study is to determine the long-term safety of DTX401 following a single intravenous (IV) dose in adults with GSDIa.
Immune Tolerance Induction Study
Pompe DiseaseGlycogen Storage Disease Type II (GSD-II)1 moreAn exploratory, open-labeled study of participants with Pompe disease, who had previously received Myozyme® (alglucosidase alfa) treatment, to evaluate the efficacy, safety and clinical benefit of 2 Immune Tolerance Induction (ITI) regimens in combination with Myozyme®. Eligible participants who were then receiving Myozyme® therapy were enrolled into the study, and were followed for a minimum of 18 months on-study (a 6-month ITI treatment module and a 12-month follow-up module on Myozyme® alone). Eligible participants were followed for a minimum of 18 months on treatment or, if a participant was <6 months of age at the time of enrollment, until the participant was 2 years of age. Both cross-reacting immunologic material (CRIM)-negative and CRIM-positive participants were eligible for Regimen A depending if they met the required criteria. Regimen B, however, was limited to CRIM-negative participants.
Safety, Tolerability, and Pharmacokinetics of UX053 in Patients With Glycogen Storage Disease Type...
Glycogen Storage Disease Type IIIThe primary objective of the study is to evaluate the safety of UX053 in adults with Glycogen Storage Disease Type III (GSD III).
The Use of Uncooked Sweet Manioc Starch to Treat Hepatic Glycogen Storage Diseases
Glycogen Storage Disease Type IHepatic Glycogen Storage Diseases are a group of 10 serious genetic diseases that present in childhood and are characterized more frequently by the occurrence of repetitive hypoglycemia and dyslipidemia. Regarding treatment, the most commonly used strategy is the frequent administration of uncooked cornstarch, in average, every 4 hours. Although this treatment is successful, the use of large amounts of cornstarch can lead to overweight and, especially, to the decrease in the quality of life of patients and caregivers, due to the need to use the starch during the night. The search for a treatment that is widely available and that can lead to the prolongation of the fasting time, can collaborate to improve the care of these patients. The main scientific question to be answered by this research is: does sweet manioc starch, a Brazilian product, safely prolong the fasting time (with normoglycemia) of the patients as already suggested in experimental models? Main objective: To evaluate the efficacy and safety of the use of uncooked Sweet Manioc Starch in the treatment of patients with hepatic Glycogen Storage Diseases, using as model the Glycogen Storage Diseases type Ia.
High Dose or High Dose Frequency Study of Alglucosidase Alfa
Pompe DiseaseGlycogen Storage Disease Type II (GSD-II)1 morePompe disease (also known as glycogen storage disease Type II) is caused by a deficiency of a critical enzyme in the body called acid alpha-glucosidase (GAA). Normally, GAA is used by the body's cells to break down glycogen (a stored form of sugar) within specialized structures called lysosomes. In patients with Pompe disease, an excessive amount of glycogen accumulates and is stored in various tissues, especially heart and skeletal muscle, which prevents their normal function. The objective of this exploratory study is to evaluate the safety and efficacy of alternative dosing regimens of alglucosidase alfa in patients with Pompe disease who have not demonstrated an optimal response to the standard dosing regimen of 20 mg/kg every other week after a minimum of 6 months treatment immediately prior to study entry.
Extension Study of Long-term Safety and Efficacy of Myozyme for a Single Patient With Pompe Disease...
Pompe Disease Late-OnsetGlycogen Storage Disease Type II GSD IIThis extension study was to monitor the long-term safety and efficacy of rhGAA treatment in a single patient with infantile-onset Pompe disease who were previously treated with rhGAA in a Genzyme study.