View clinical trials related to Anemia, Sickle Cell.
Filter by:The study will assess the effect of bosentan on pulmonary vascular resistance and exercise capacity in sickle cell disease (SCD) patients diagnosed with pulmonary arterial hypertension. It consists of 3 phases: Screening, Treatment and Follow-up. During the Screening visit, the study doctor will decide if patients meet the study requirements. All potential patients will have a diagnosis of increased pulmonary artery pressures that is shown by right heart catheterization conducted shortly prior to start of study treatment. Patients will be asked to perform exercise capacity test (walking as far as possible for 6 minutes). Following the Baseline visit, the treatment phase consists of 4 additional clinic visits during which the good and bad effects of the drug are reviewed and exercise capacity test will be repeated. Patients will be treated for 16 weeks. Blood samples will be collected every month, or more often, if needed. At the end of the study, patients will be asked to repeat the right heart catheterization and exercise capacity test. After completion of the study, patients will have the option of enrolling in a long-term follow-up study where all patients will receive active drug. Patients electing not to participate in the extension study will be followed up for safety assessments for about 28 days after the end of the study treatment.
The primary objectives of this prospective, observational study are (1) to describe the long-term cellular, molecular, and clinical effects of hydroxyurea therapy in sickle cell disease, and (2) to perform hydroxyurea pharmacokinetics studies. This study will follow sickle cell patients being treated with hydroxyurea for a long period of time to evaluate the long-term cellular and molecular effects of the drug on the patients' body. This study will consist of two patient groups. One group will be made up of patients who have received hydroxyurea therapy before entering the study. The second group will be made up of patients who have not received hydroxyurea before study entry.
Priapism, a prolonged erection of the penis, is a medical issue that often affects men with sickle cell disease. The purpose of this study is to collect demographic and clinical information on priapism by interviewing men with sickle cell disease.
This trial is a follow-up companion study to Protocol ICA-17043-10, a Phase III, multi-center, efficacy and safety study of ICA-17043. This is an open-label extension study collecting safety data on the use of ICA-17043 in subjects with sickle cell disease (SCD) (e.g., HbSS, HbSC, HbSb0-thalassemia, HbSb+-thalassemia subjects). All subjects who have successfully completed ICA-17043-10 will, if deemed appropriate by their study Investigator and appropriate consent by subject is given, enroll in the ICA-17043-12 study (Study 12). Only patients who participated in ICA-17043-10 are eligible for this open label study
The purpose of this study is to determine the benefits as well as side effects of giving drugs called dipyridamole and magnesium to patients with sickle cell anemia (SCA).
This study will examine the use of hydroxyurea and erythropoietin for treating sickle cell disease in patients who also have kidney disease or pulmonary hypertension (high blood pressure in the lungs). Hydroxyurea increases production of fetal hemoglobin in the red blood cells of patients with sickle cell disease, reducing the amount of sickle cells that cause pain and other complications requiring hospitalizations. However, hydroxyurea treatment has limitations: patients with sickle cell disease who have developed kidney disease may not be able to get the full benefit of the medicine, and hydroxyurea alone may not be able to treat life-threatening complications such as pulmonary hypertension or stroke. This study will determine which of two dosing schedules of hydroxyurea and erythropoietin is more effective for treating patients with sickle cell disease who also have kidney disease or pulmonary hypertension, and will examine whether the two drugs can lower blood pressure in the lungs. Patients 18 years of age and older with sickle cell anemia and kidney disease or pulmonary hypertension, or both, may be eligible for this study. Candidates are screened with a medical history, physical examination, blood tests, a 6-minute walk test (test to see how far the subject can walk in 6 minutes), and echocardiogram (ultrasound of the heart to measure blood pressure in the lungs). Participants undergo the following tests and procedures: Stabilization Phase: Patients take 2 hydroxyurea tablets a day until their fetal hemoglobin levels stabilize, usually over 2 to 4 months. They have blood tests every 2 weeks to monitor hemoglobin and fetal hemoglobin levels. At some time during this period, they undergo a test to measure kidney function, in which they are injected with an iodine-containing dye and wear a small pump for 1 day that injects a small amount of dye under the skin over 24 hours. They come to the clinic for 2 or 3 blood tests collected over 4 hours. Sequence I (Standard): When the fetal hemoglobin levels have been stable for 2 months, patients have a repeat echocardiogram and 6-minute walk test. Erythropoietin is then added to the hydroxyurea regimen. It is given 3 days a week, as an injection under the skin, along with iron supplements. Patients have blood tests and blood pressure measurements every week or every other week. Patients with pulmonary hypertension have another echocardiogram and 6-minute walk test once the hemoglobin level is stable. Sequence II (Cycled): When hemoglobin levels have stabilized with hydroxyurea once a day and erythropoietin 3 times a week, the hydroxyurea is adjusted so that the amount taken in 7 days is "cycled" over 4 days, and the erythropoietin is cycled over 3 days, with the dose increased twice, every 3 to 4 weeks. Blood pressure and hemoglobin are monitored once or twice a month. Patients with pulmonary hypertension have another echocardiogram and 6-minute walk test once the hemoglobin level is stable. Patients who develop complications while taking the drugs have their treatment regimens adjusted as needed.
The painful episode is the most common problem experienced by children with sickle cell disease. Although various treatments are available during painful episodes, the medication most commonly given for pain is a pain medication such as morphine. Fluids are also used. Even with these treatments, many children still have severe pain that is difficult to control. In addition to pain medications, there are other medications that may be useful. Methylprednisolone (solumedrol) and prednisone are a group of medications called steroids that may be helpful for painful episodes. These medications are known to lower the amount of inflammation (this means swelling, tenderness, and soreness) in the body. Because this medication may help with your pain, you are being asked to be a part of this study. These types of medications are used in other illnesses such as asthma, especially during times when the illness has gotten worse. The main purpose of this study is to see if the methylprednisolone and prednisone will lower the amount of pain and the length of hospital stay. In addition to the pain medication you will normally receive, you will be assigned to one of 2 groups: 1) the experimental group with the active form of the medicine, or 2) a comparison group without the active form of the medicine. In either group, you will still receive all of the treatments you would normally receive for a painful episode, including pain medicines and fluids. You and your doctors will not know what group you will be assigned. If you decide to be a part of the study the following will happen: For the first 5 days, you will be asked to: 1) describe your current pain (0=no pain to 10=a lot of pain), worst pain (0=no pain to 10=a lot of pain), least pain (0=no pain to 10=a lot of pain), and the amount of pain relief (0=no relief to 10=complete relief); 2) describe any signs or symptoms you feel, including filling out a pain scale form each day; 3) and take the medicines for 5 days, either at home or when in the hospital. Thirty days after the study, a study researcher will call and will ask questions about your pain, any painful episodes, and any medications you had. If you are discharged home sooner than 5 days after the start of the study, research staff will call you to ask you these questions, remind you to fill out your pain forms, and remind you to take your medicine. If you are discharged home, you will be given pain scales to fill out each day at home.
We hope to gain valuable information about the safety, success of engraftment, and rates of complications using alternate donor transplantation for children with severe SCD. Crucial information will be also collected about late effects from alternate donor BMT sickle cell, providing valuable information to clinicians and families making decisions among interventions for children with severe sickle cell disease. If successful, alternate donor transplantation in this setting could pave the way to offering curative treatment to many more patients with severe SCD.
The purpose of this pilot study is to provide a preliminary assessment of the feasibility and efficacy of intravenous ketamine in controlling pain in patients with sickle cell disease (who are admitted to the hospital with severe, acute pain crisis, and who have been resistant to intravenous narcotics).
This study is being done to see what impact having a Lifeport device has on quality of life for children with sickle cell who are getting chronic transfusions, from the child's perspective.