Active clinical trials for "Anemia, Sickle Cell"

The primary goal of the study is to determine the safety and tolerability of ambrisentan. It is also expected that ambrisentan will improve blood flow in the lungs, decrease inflammation, and reduce pain in sickle cell patients. An additional goal is to evaluate the use of select biomarkers in evaluating sickle nephropathy.

This is a study to evaluate the safety, tolerability and pharmacokinetics of FTX-6058 in healthy adult subjects and adult subjects with sickle cell disease (SCD).

Background: In sickle cell disease (SCD), the proteins in the red blood cells that carry oxygen do not behave normally. In parts of the body where there are low levels of oxygen or where oxygen is used more, the sickle hemoglobin proteins may change shape and stick together. This causes the red cells to clump, which reduces blood flow. This leads to even lower oxygen levels and causes damage and/or pain. One way to stop the red blood cells from sticking together is to increase the levels of fetal (baby or good ) hemoglobin. The good hemoglobin then takes the place of the sickle hemoglobin. Hydroxyurea is the only approved drug for SCD. But hydroxyurea works in only about two-thirds of people with SCD. Even in those cases it sometimes stops working over time. Researchers are interested in testing decitabine. The drug may help to increase fetal hemoglobin levels. But it has not yet been approved to treat SCD. Objectives: - To test the safety and effectiveness of decitabine in increasing fetal hemoglobin levels and improving the symptoms of sickle cell disease. Eligibility: - People at least 18 years of age who have sickle cell disease that has not improved after at least 6 months of hydroxyurea therapy. Those who cannot take hydroxyurea because of side effects may also participate. Design: Participants will be screened with a physical exam and medical history. They will also have blood and urine tests, a lung function test, and other tests as required. Participants will receive decitabine injections up to twice a week for 1 year. Depending on the response to treatments, the dose will remain the same or be reduced to once a week. Participants will be monitored with frequent blood tests and other studies as directed by the study doctors. After the study is completed, participants will go back to their usual sickle cell care. If decitabine has improved a participant's SCD, treatment may be continued under regular health coverage insurance if this can be arranged.

The purpose of the study is to determine the maximum tolerated dose, safety and effect on induction of fetal hemoglobin of pomalidomide in patients with Sickle Cell Disease.

The purpose of this research is to evaluate the effects of L-glutamine as a therapy for Sickle Cell Anemia or Sickle ß0 Thalassemia as evaluated by the number of occurrences of sickle cell crises.

One of the main problems in sickle cell disease is the decreased bioavailability of nitric oxide and arginine. This study was designed to assess if treating sickle cell disease patients with L-arginine would improve pulmonary arterial pressure and other aspects.

The purpose of this study is to assess whether methylphenidate is effective in enhancing the cognitive performance of children with the HbSS or HbSC genotype of SCD who have sustained neurological complications on laboratory-based measures of sustained attention, reaction time, and executive functions, and indirectly, verbal short-term and long-term memory.

Sickle cell disease (SCD) is an inherited blood disorder that causes the red blood cells to change their shape from a round shape to a half-moon/crescent or sickled shape. People who have SCD have a different type of protein that carries oxygen in their blood (hemoglobin) then people without SCD. This different type of hemoglobin makes the red blood cells change into a crescent shape under certain conditions. Sickle-shaped cells are a problem because they often get stuck in blood vessels blocking the flow of blood, and cause inflammation and injury to the important areas in the body. Lexiscan is drug that may prevent this inflammation and injury caused by the sickle shaped cells. This drug is approved by the FDA to be used as a fast infusion during a heart stress test in people who are unable to exercise enough to put stress on their heart by making it beat faster. Lexiscan has never been studied in patients with SCD and has never been given as a long infusion.

The purpose of this study is to determine whether alpha-lipoic acid and acetyl-L-carnitine will lower systemic inflammation in patients with Sickle Cell Disease by reducing oxidative stress, which will result in a decrease in the frequency of vaso-occlusive pain episodes and improve their quality of life.

The objective of the study is to monitor the safety (adverse event data) of longer-term use of ACTIQ (Oral Transmucosal Fentanyl Citrate [OTFC]) treatment in children with pain associated with cancer, sickle cell disease, or severe burns and breakthrough pain (BTP) who are receiving around the clock (ATC) opioid therapy.