Active clinical trials for "Glycogen Storage Disease"

Pompe 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.

This study is being done to test the effects of Lingual Muscle Therapy (LMT) in patients with Late-Onset Pompe Disease (LOPD) who have tongue weakness. The results of this study will help design future research studies about LMT in LOPD.

The primary objective of the study is to determine the safety of single doses of DTX401, including the incidence of dose-limiting toxicities (DLTs) at each dose level.

In this clinical cross-over study, we will compare the efficacy of different oral nutrition regimens for night-time glucose control in adult GSD 1 patients. Three different over-night nutrition regimens (=interventions) will be compared in each patient sequentially, (1) uncooked corn starch (UCSS, "Maizena"), (2) modified corn-starch, (3) other carbohydrate (starch) containing meal. During each intervention, glucose profiles will be continuously monitored by continuous glucose monitoring (CGMS). The duration of each intervention is 3d (mimimum) to 6d (maximum), depending on the quality of night-time glucose control and the technical quality of glucose sensor readings. Between the interventions, the patients follow their normal prescribed diet.

To compare efficacy of Glycosade® with uncooked corn starch (UCCS for the dietary management of hepatic glycogen storage diseases (GSD).

Background: Patients with the sugar metabolism disorder, Glycogen Storage Disease Type V, have insufficient breakdown of sugar stored as, glycogen, within the cells. The investigators know from previous studies with McArdle patients, that they not only have a reduced sugar metabolism, both also have problems in increasing their fat metabolism during exercise to fully compensate for the energy deficiency. Studies on Triheptanoin diet used in patients with other metabolic diseases have shown that Triheptanoin can increase metabolism of both fat and sugar. In these patients, Triheptanoin has had a positive effect on the physical performance and has reduces the level of symptoms experienced by patients. Aim: To investigate the effect of treatment with the dietary oil, Triheptanoin, in patients with McArdle disease on exercise capacity. Methods: 20-30 adult patients will be recruited through Rigshospitalet in Copenhagen, Denmark, Hopital Pitié-Sapêtrière in Paris, France and through The University of Texas Southwestern Medical Center in Dallas, Texas. Pre-experimental testing (1 day): Baseline blood samples are collected to obtain baseline values of safety parameters: Plasma-acylcarnitines, free fatty acids and creatine kinase. Subjects perform a max-test to determine their VO2max Treatment period #1 (2 weeks): Subjects follow a diet consuming a dietary treatment oil. Neither patients nor members of the study group know who receive which type of oil. Washout period (1 week): Subjects receive no treatment Treatment period #2 (2 weeks): Subjects who received Triheptanoin oil in the first treatment period, now receive placebo oil and vice versa. Assessments: Before and after each treatment periods, subjects perform a 30-minutes exercise test on a cycle ergometer, comprising of 20-22 minutes of constant load exercise and 6-8 minutes increasing load to peak. Subjects will complete a Fatigue Severity Scale questionnaire and metabolic products will be measured in blood and urine.

Pompe 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 overall objective of this study is to evaluate the long-term safety and efficacy of Myozyme treatment in patients with infantile-onset Pompe disease.

Pompe 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 overall objective is to evaluate the safety, efficacy, and pharmacokinetics (PK) of alglucosidase alfa treatment in patients with late-onset Pompe disease as compared to placebo.

GSD-II (also known as Pompe disease) 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 GSD-II, an excessive amount of glycogen accumulates and is stored in various tissues, especially heart and skeletal muscle, which prevents their normal function. This study is being conducted to evaluate the safety, pharmacokinetics, pharmacodynamics and efficacy of recombinant human acid alpha-glucosidase (rhGAA) as a potential enzyme replacement therapy for a pair of siblings with GSD-II. To be eligible for this study, a patient must have a confirmed diagnosis of GSD-II and have a sister or brother who also has a confirmed diagnosis of GSD-II.

The objective of this demonstration project is to compare a novel long-acting starch, Glycosade, a hydrothermally processed high amylopectin maize starch, versus gastrostomy tube-dextrose infusion in maintaining euglycaemia overnight in children with GSD-I. Glycosade has been reported to increase the duration of euglycaemia. Its slow release and longer periods of normal blood sugar achieved would preclude the need for the overnight dextrose infusion and eliminate the need for the surgical insertion of a gastrostomy tube for this purpose. Glycosade also reportedly causes fewer gastrointestinal side effects, thus potentially improving compliance to therapy. The investigators intend to evaluate Glycosade in our patients and determine its efficacy on glucose control, on the length of normoglycemia achieved and to determine if there are reduced side effects in our patients with GSD-I. This will be accomplished by an open label study of Glycosade in GSD-I patients who consent to the protocol.