Active clinical trials for "Gaucher Disease"

This is a multi-center, open-label, switchover trial to assess the safety of taliglucerase alfa in 30 patients with Gaucher disease who are currently being treated with imiglucerase (Cerezyme®) enzyme replacement therapy.

Although miglustat has been approved as a treatment for mild to moderate type 1 Gaucher disease in patients who are unsuitable for enzyme replacement therapy (ERT), more data are required to establish the long term efficacy, safety and tolerability of miglustat in maintaining diseases stability after a switch from ERT.

This is a multicenter, randomized trial to compare the safety and efficacy of two dosing frequencies of Cerezyme® in patients with Gaucher disease who are currently being treated with Cerezyme®. Approximately 90 patients will be randomized in a 2:1 (q4 : q2) ratio to one of two treatment arms at up to 26 study centers worldwide. Patients will continue to receive the same total 4-week dose that they were receiving prior to study enrollment, however, they will be randomized to receive either their total 4-week dose in two infusions, one infusion every 2 weeks or their total 4-week dose in one infusion every 4 weeks. The randomization scheme will ensure a 2:1 balance between the every 4-week versus every 2-week infusion groups, respectively.

Gaucher disease is a rare lysosomal storage disorder caused by the deficiency of the enzyme glucocerebrosidase (GCB). Due to the deficiency of functional GCB, glucocerebroside accumulates within macrophages leading to cellular engorgement, organomegaly, and organ system dysfunction. The purpose of this study is to evaluate the long term safety of enzyme replacement therapy with DRX008A (VPRIV®, GA-GCB; velaglucerase alfa) in patients with type 1 Gaucher disease.

Gaucher disease is an inherited functional deficiency of glucocerebrosidase. This enzyme breaks down a fatty substance (lipid) called glucocerebroside, which is present in all cells of the body. When cells renew themselves, the lipids must be broken down and discarded. Because the enzyme does not function well, the lipid builds up in certain tissues, such as the liver and spleen. The nervous system is involved as well; memory is impaired and it is difficult to move the eyes from side to side. It has been shown that repeated infusions of glucocerebrosidase help break down the stored lipid. However, this treatment does not improve any neurological symptoms. A medicine called OGT 918 has been shown to slow the production of the lipid that builds up in Gaucher disease. It also has been shown to enter the brain. It is hoped that taking OGT 918 will reduce the storage of glycolipids in cells and improve the neurological symptoms of the disease. This clinical trial seeks to evaluate OGT 918 as a treatment for neuronopathic Gaucher disease by assessing changes in eye movement velocity. A secondary goal is to assess the clinical safety and tolerability of OGT 918 therapy. Up to 30 patients from the National Institutes of Health and the Institute of Child Health (London) will be randomly assigned to OGT 918 or no treatment for 12 months. Study participants must be clinically diagnosed with neuronopathic Gaucher disease, 12 years of age or older, and able to swallow capsules. They must have been stable on ERT for at least 6 months before the study. Patients receiving OGT 918 will receive a dose of 200 mg OGT 918 three times daily. Data analysis will be done after 12 months. The study will be extended up to 12 months to collect safety and efficacy data. All patients who complete the main study and enter the extension study will receive OGT 918. During a 4-week screening period, eye movement velocity will be measured. These assessments will be repeated at months 12 and 24. Also at screening and months 12 and 24, the following tests will be done: MRI/CT, to measure spleen and liver volume; pulmonary imaging (by X-ray) and function tests; nerve conduction velocity studies and neuropsychological assessments; evoked response studies (to measure how the brain conducts electrical messages); and tremor measurements. Additional assessments for tremor will be conducted at months 6 and 18. Plasma samples will be obtained every 3 months to measure disease markers and safety profiles. Proteasome samples will be taken at screening and month 6 to identify proteins that may be associated with Gaucher disease. Blood will be obtained at month 1 from the first 6 consenting patients who have been randomly assigned to take OGT 918. These patients will also have a cerebrospinal fluid sample taken by lumbar puncture at month 1. These samples will be measured for how much OGT 918 is present. All patients receiving OGT 918 will have an initial assessment 1 week after beginning treatment to evaluate tolerance of the therapy. Clinic visits will be every 3 months. All patients will be asked to keep a simple diary of adverse events and dietary information. Dose levels may be reduced if a patient experiences severe gastrointestinal problems.

Gaucher's disease is a lysosomal storage disease resulting from glycocerebroside GLUCOCEREBROSIDE (1) accumulation in macrophages due to a genetic deficiency of the enzyme glucocerebrosidase. It may occur in patients of all ages. The most severe form, Type 2 Gaucher's Disease occurs in infants who die in the first years of life (with rapidly progressive neurologic deterioration). The condition is passed from generation to generation through autosomal recessive inheritance. Fabry's disease isa genetic disorder (X-linked recessive) due to the absence of the enzyme a-galactosidase A. The disease is characterized by abnormal collections of glycolipids in cells (histiocytes) within blood vessel walls, tumors on the thighs, buttocks, and genitalia(2) decreased sweating, tingling sensations in the extremities, and cataracts. Patients with Fabry's disease die from complications of the kidney, heart, or brain. Both conditions are caused by the absence of specific enzymes (3). Patients with these conditions are missing (3) or have defective genes needed for the normal production of these enzymes. Studies on the blood-forming cells in bone marrow have lead to gene therapies using retroviruses as vehicles to carry and insert working genes into abnormal or diseased cells. This study is designed to measure the safety and effectiveness of transferring working copies of genes responsible for making missing enzymes into the cells of patients with Gaucher's or Fabry disease.

The study will provide information on outcomes in people with type 1 Gaucher disease when they are treated with velaglucarase alfa (also called VPRIV), under standard care. Standard care means the participant will be treated according to the clinic's standard practice. The study sponsor will not be involved in how participants are treated with VPRIV, will provide instructions on how the clinic will record what happens during the study. VPRIV is a type of enzyme replacement therapy (also known as ERT). Before starting the study, participants must either have switched from substrate reduction therapies (SRT) to VPRIV or switched from other enzyme replacement therapies to SRT then finally to VPRIV. During this time, medical data will be collected from the participants' medical records. During the study, participants will be treated with VPRIV according to their clinic's standard practice. VPRIV is given by a slow injection into the vein, also known as an infusion. This will happen in the clinic or at home. The study will record if blood levels of specific substances remain stable or improve during the switch to treatment with VPRIV. Some of these substances will show if organs such as the liver or spleen are working well. Others are blood cells that help blood to clot, known as platelets. Another is a substance in a red blood cell used to carry oxygen around the body, known as hemoglobin. Participants will use a digital tool so they can be more involved in decision making in their treatment. The digital tool is a mobile phone app, in which each participant can log their daily activities, their general health and wellbeing, and other key information. Medical data will also be collected from the participants' charts during this time. Health problems of the participants will be recorded during the study to check if there were any side effects from VPRIV treatment. Participants will be in this study for up to 12 months.

The investigators are interested in determining if the investigators are able to detect changes in brain chemistry using Magnetic Resonance Spectroscopy (MRS) in individuals with Parkinson's disease (PD), those with Gaucher's disease (GD), and those without neurological disorders (healthy controls) when they are given the antioxidant N-acetylcysteine (NAC). This study will combine information from a medical history, a physical examination and disease rating scales with results obtained using MRS brain scans and pharmacokinetic studies from blood samples. This research will require 1 visit that will require about 4 to 5 hours of time. During this study, participants will provide their medical history, be examined and undergo a rating scale for about one hour; the brain scan and pharmacokinetic studies will require 1.5-2 hours of time; in total the study will take about 4-5 hours.

This is a multi-center, double-blind trial to assess the safety and efficacy of taliglucerase alfa in untreated subjects (2 to <18 years old) with Gaucher disease randomly assigned to treatment with one of two doses, 30 or 60 units/kg. Subjects will receive an intravenous (IV) infusion of taliglucerase alfa every two weeks. The total duration of treatment will be 12 months. At the end of the 12-month treatment period eligible subjects will be offered enrollment in an open-label extension study if taliglucerase alfa is not commercially available.

The purpose of this study is to evaluate the long-term safety of every other week dosing of Gene-Activated® human glucocerebrosidase (GA-GCB, velaglucerase alfa) intravenously in patients with type 1 Gaucher disease.