View clinical trials related to Transfusional Iron Overload.
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The proposed research project will continue the application and development of a new method (biomagnetic susceptometry) that measures magnetic fields to determine how much iron is in the liver. The amount of iron in the liver is the best indicator of the amount of iron in the whole body. Measuring the amount of iron in the body is important because either too much (iron overload) or too little iron (iron deficiency) can be harmful. At present, the most reliable way to measure the amount of iron in the liver is to remove a sample of the liver by biopsy, either by surgery or by using a needle which pierces the skin and liver. Iron stored in the liver can be magnetized to a small degree when placed in a magnetic field. In patients with iron overload, the investigators previous studies have shown that magnetic measurements of liver iron in patients with iron overload are quantitatively equivalent to biochemical determinations on tissue obtained by biopsy. In the past the investigators have developed a device to measure the amount of magnetization, which was called a SQUID (Superconducting QUantum Interference Device) susceptometer. This device was validated and in use for over 20 years. The safety, ease, rapidity and comfort of magnetic measurements make frequent, serial studies technically feasible and practically acceptable to patients. The investigators have now developed a new susceptometer, which uses very similar technology to the SQUID, but the investigators believe is more accurate and precise. This study aims to validate this new instrument. The investigators will do prospective, serial studies of the diagnosis and management of patients with iron overload, including thalassemia major (Cooley's anemia), sickle cell disease, aplastic anemia, myelodysplasia, hereditary hemochromatosis, and other disorders. Funding Source - FDA OOPD.
The purpose of this research study is to evaluate the safety of two doses of FBS0701, a new oral iron chelator, and its effectiveness in clearing iron from the liver. FBS0701 is a medication taken by mouth that causes the body to get rid of iron. Iron chelators are used in patients with β-thalassemia and other forms of anemia who experience iron overload - iron increases in the body as a result of regularly required blood transfusions. Patients who qualify will be randomized to receive one of two doses of FBS0701 for up to 24 weeks (6 months) with a total study duration of up to 33 weeks. These patients will be eligible to participate in a dosing extension for up to 72 weeks. The maximum duration of dosing will be up to 96 weeks. The safety of patients will be monitored frequently during the study by physical exams, ECGs, and blood tests. To assess the amount of iron in the liver and heart, each patient must undergo 6 MRI scans during the study. Patients will not need to stay in the hospital for this study but will need to visit the outpatient clinic up to 28 times over the 96 week period. Patients currently taking an iron chelator will be required to stop for a total of up to 26 weeks. The results of this study will help to determine if FBS0701 may be effective as an iron chelator.
The purpose of this open-label, non-comparative, multi-center protocol was to further evaluate safety and to provide treatment with ICL670 to patients who had or were at risk of life threatening complications due to transfusional iron overload with a documented inability to tolerate any of the commercially available iron chelators due to severe toxicity rendering continued therapy either impossible or hazardous. Patients who were also ineligible for all on-going registration trials with ICL670 were included in the study. In exceptional cases, patients with a degree of iron overload which was not immediately life-threatening and who were ineligible for the registration trials were also enrolled provided they had a well-documented, sound justification for alternative chelation therapy.
The purpose of this research study is to study the safety of increasing doses of FBS0701, and to see how quickly the study medication is absorbed and how quickly it disappears from the bloodstream. FBS0701 is a new, oral iron chelator - a medication taken by mouth that increases the body's elimination of iron. Iron chelators are used in patients who develop iron overload from their transfusions. Four increasing doses of FBS0701 will be tested during this study. The study will start with the lowest dose given to 4 patients (3 mg/kg/day. The next group of 4 patients will receive the next high dose (8mg/kg/day only after the results of the first 4 patients are examined and it is determined safe to continue. Participating patients will take the study medication for 7 days and be followed for 28 days after their last dose to determine if they have any reactions to the study medication - therefore a total of 35 days on study. Patients will need to give up to 17 blood samples over the screening period and first 15 days of the study (a total of about 9 tablespoons). Patients will not need to stay overnight in the clinic but will need to visit the clinic 10 times for screening and on-study visits over the 35 days. Patients currently taking an iron chelator will need to stop that treatment for up to 22 days (up to 5 days before they start the study and for 15 days during the study). The results of this study will be helpful in determining the safety of the drug and the best doses of FBS0701 to be used in the next study which will assess the effectiveness of this new iron chelator.
This study will evaluate the change in cardiac iron load over a 53 week period measured by MRI in 2 cohorts of patients
This is a clinical research study in patients who have iron overload in the heart due to chronic blood transfusions. The study will have 2 treatment groups and will compare the safety and efficacy of chelation therapy with a medicine called deferasirox (ICL670) with another medicine called deferoxamine (DFO). The study is aimed at finding out which of the two medicines is the best for treating iron overload in the heart. Patients will be treated for 12 months (core study phase). Patients who complete the core study phase will be offered to continue their study treatment in a 12 months extension phase. During the core and extension, the effects of treatment on iron overload in the heart and the liver will be evaluated using specific magnetic resonance imaging (MRI) assessments.
The primary purpose of this study is to evaluate the effect of deferasirox on renal hemodynamics by determining glomerular filtration rate (GFR), renal plasma flow (RPF) and filtration fraction (FF).
In this 4-year extension study the safety, efficacy and and pharmacokinetics of deferasirox in regularly transfused pediatric patients with β-thalassemia major was assessed. Patients who successfully completed the main 1 year trial (NCT00390858) were eligible to continue in this extension trial and receive chelation therapy with deferasirox for up to 4 years.
A 1-year randomized Phase IIa core trial followed by a prolongation of 5 to 9 months was conducted to investigate the efficacy and safety of deferasirox in patients aged ≥ 18 years with transfusion-dependent iron overload. The objective of this extension study is to assess the long-term safety of deferasirox and to provide treatment in patients with transfusional iron overload.