View clinical trials related to Sickle Cell Disease.
Filter by:Intro: Sickle cell disease is a genetic disorder caused by a mutation of the β hemoglobin called HbS, which causes red blood cell (RBC) abnormalities responsible for hemolysis, mainly intravascular, leading to chronic anemia. Intravascular hemolysis is responsible for severe inflammation and endothelial dysfunction. Maintaining hemoglobin in its oxygenated R-conformation is one of the strategies for inhibiting the polymerization of HbS. Previous experimental therapeutic approaches having this effect have been discontinued due to poor pharmaceutical properties or toxicity. Nevertheless, they proved the validity of the concept by demonstrating an increase in oxyhemoglobin and a decrease in biomarkers of hemolysis. Voxelotor binds to the α chain of globin and maintains Hb in its R conformation, thereby inhibiting the polymerization of HbS while increasing the affinity of Hb for oxygen. Because of its mechanism of action affecting anemia and hemolysis, Voxelotor is a promising treatment for the prevention and treatment of renal and cerebral arterial disease. Hypothesis/Objective : Investigator hypothesis is that the treatment by Voxelotor (GBT440) will improve intra vascular hemolysis and will increase the total mass of hemoglobin with beneficial effects on organ function. The primary objective of the study is to evaluate the biological activity of Voxelotor on the reduction of intra vascular hemolysis measured by plasma hemoglobin. The secondary objectives of the study will aim at characterizing the effects of GBT 440 Voxelotor on: - Intra vascular hemolysis measured by plasma Heme - Total hemoglobin mass (MHb) - RBCs lifespan - Blood volumes (plasma volume (PV), red blood cell mass (RBCM), total blood volume (BV)) - Blood viscosity - Cerebral perfusion - Cerebrovascular vaso-reactivity - Cognitive function (MoCA) - Six minute walk test - Renal perfusion and iron deposits in renal cortex - Measurement of Glomerular filtration rate Estimation of glomerular filtration rate (CKD/EPI equation) - Urine albumin/creatinine ratio - Ability to decrease or stop erythropoietin in patients under EPO treatment - Safety (VOC, ACS, Priapism) and tolerability of voxelotor - RBC properties Method: This is an open-label, single-arm, single-stage phase II trial in patients treated with Voxelotor 1500 mg daily for 48 weeks. Assessments will be done during the study at week 0, week 6, week 12, week 24, week 36 and week 48.
The objective of this study is to to determine the rate of nasopharyngeal carriage of Streptococcus pneumoniae (Sp) in children with sickle cell disease over 6 months and under 15 years of age over a 9-month period in Ile-De-France.
Background: Sickle Cell Disease (SCD) causes blood cells form a crescent shape. It is caused by a genetic mutation in the hemoglobin gene. People with SCD are at increased risk for illnesses like stroke, chronic pain, and heart problems, as well as decreased overall health and well-being. Researchers want to learn more about how nutrition and diet can help relieve or reduce the symptoms of SCD. Objective: To understand how diet, dietary patterns and behaviors, nutrition, and other related factors in adults with SCD affect their overall health. Eligibility: Adults aged 18 and older with SCD. Design: Participants will be screened with a review of their medical records. They will take a pregnancy test if needed. Participants will have a physical exam and medical history. Their height, weight, and waist and hip circumference will be measured. They can complete this exam (1) via telehealth along with a visit to an outpatient laboratory center or (2) by going to the NIH Clinical Center. Participants will complete 2 interviews about their diet. They will talk about the foods they ate in the past 24 hours. They will also complete 1 interview about diet-related behaviors such as food shopping and cooking. They can complete the interviews in person, by phone, or by telehealth visit. Participants will complete surveys about their demographics (such as age and gender), SCD pain, mood, stress, diet, and nutrition. It may take about 1 hour to complete all of the surveys. Participants will give blood and urine samples. They will need to fast for at least 8 hours overnight before giving blood samples. Participation will last for about 2 weeks.
This is a study to evaluate the safety, tolerability, pharmacokinetics and pharmacodynamics of FTX-6058 in participants with sickle cell disease.
Sickle Cell Disease is one of the most common genetic diseases in the United States, occurring in approximately 1 in 400 births. Approximately 100,000 individuals are diagnosed with SCD in the United States. Mortality for children with SCD has decreased substantially over the past 4 decades, with >99% of those born in high resource settings, including the United States, France, and England, now surviving to 18 years of age. However, the life expectancy of adults with SCD is severely shortened. Dysfunction of the heart, lung, and kidney is directly associated with decreased life expectancy. With the variety of curative therapies that are now available for SCD, long-term health outcomes studies are time-sensitive. As of now, efforts to determine long-term health outcomes following curative therapies for SCD have been limited. Though curative therapies initially should provide a cure for symptoms of SCD, there is the risk of late health outcomes to consider. Defining health outcomes following curative therapy is essential to improve personalized decision-making when considering curative versus disease-modifying therapeutic options. The primary goal of this study is to determine whether curative therapies for individuals with SCD will result in improved or worsening heart, lung, and kidney damage when compared to individuals with SCD receiving standard therapy. The investigators will also explore whether certain genes are associated with a good or bad outcome after curative therapy for SCD.
The objective of this study is to determine the seroprevalence of severe acute respiratory syndrome-CoV-2 in unvaccinated sickle cell patients living in an area with high viral circulation and at risk of high viral transmission, after the 4th epidemic wave of COVID-19 in Ile-de -France, over a period of 3 months (for example, last quarter of 2021).
To implement an effective but low-cost strategy to decrease SCD maternal and perinatal mortality in Ghana. The objectives are to 1) assess the impact of a multidisciplinary SCD-obstetric team for decreasing mortality across three hospital sites in Ghana. 2) assess the implementation fidelity for 2a) preventing and 2b) treating acute chest syndrome in pregnant women with SCD admitted to the hospital. 3) standardize an ultrasound protocol for the prospective monitoring of fetal growth among pregnant women with SCD.
The purpose of this study is to assess the antibody response to COVID-19 vaccination in a cohort of patients with sickle cell disease (SCD) and to assess vaccine and SCD related complications around the time of vaccination.
Children with sickle cell disease (SCD) exhibit significantly reduced cognitive functioning (often difficulties with attention) compared to peers and siblings without SCD. EndeavorRx (Akili Interactive Labs: Boston, MA) is an FDA-approved home-based, electronic attentional-control training program designed to treat attention problems in youth. Users access EndeavorRx on a tablet device for 25-30 minutes each day, 5 days per week, for 4 weeks. The program involves training in a game-like environment that repeatedly challenges attentional-control abilities and adapts to user performance, becoming more difficult over time as performance improves. This pilot study is examining the feasibility, acceptability, and preliminary efficacy of EndeavorRx in a sample of 20 children with SCD ages 8-16 who are being treated with chronic blood transfusion therapy.
This is a randomized, double-blind, placebo-controlled study in sickle cell disease participants with a history of Vaso-occlusive Crises (VOCs). Approximately 60 participants with sickle cell disease will be enrolled and randomized: 12 participants in each of four active novel formulation rifaximin groups and 6 participants in each of 2 placebo groups.