View clinical trials related to Anemia, Sickle Cell.
Filter by:Sickle cell disease (SCD) is an autosomal recessive genetic disorder linked to a single mutation on beta-globin chains. This leads to red blood cell deformation and chronic hemolysis which can result in vaso-occlusive events, anemia and vasculopathy. Pathophysiology is incompletely understood, and beyond red blood cell's abnormalities this involves hemostasis and innate immunity. The aim of our study is to describe the mechanisms of thrombo-inflammation during the vaso-occlusive crisis (VOC) in adults with sickle cell disease.
The investigators are evaluating the role of a low dose of tocilizumab in treating acute chest syndrome in patients with sickle cell disease. Tocilizumab inhibits interleukin-6 (IL-6) receptors and is used to treat rheumatoid arthritis and severe cytokine release syndrome, which can be seen with chimeric antigen receptor T-cell (CAR-T) therapy, and it is also authorized for treatment of COVID-19. Since IL-6 levels are elevated in the sputum of patients with acute chest syndrome, the investigators are hopeful that this will be an effective strategy. The investigators will be looking at how a low dose of tocilizumab affects oxygen status, clinical outcomes, and laboratory markers in patients admitted to the hospital with acute chest syndrome.
To collect, preserve, and/or distribute annotated biospecimens and associated medical data to institutionally approved, investigator-directed biomedical research to discover and develop new treatments, diagnostics, and preventative methods for specific and complex conditions.
An Open-label Extension Study of GBT021601 in Participants with Sickle Cell Disease
Background: Sickle cell disease is the most common monogenic disease in the world caused by a mutation in the β-globin gene which creates abnormal hemoglobin called HbS. This polymer deforms the erythrocyte, making it more fragile and less flexible, thus leading to the occlusion of small blood vessels. This obstruction is the cause of painful vaso-occlusive crises and ischemia-reperfusion phenomena. Patients with sickle cell disease undergo major acute and chronic pain responsible for a significant deterioration in their quality of life and a significant consumption of analgesics, often daily, sometimes with the development of addictive behavior. Improved analgesic management was associated with improved disease prognosis. Several studies have shown the effectiveness of the osteopathic approach in the management of chronic pain. Our hypothesis is that the association with the standard treatment of osteopathy sessions could improve but also prevent the chronic pain frequent in patients with sickle cell disease. Objectives: Our main objective is to study the effectiveness of an osteopathic treatment in adult sickle cell patients with chronic pain on the reduction of the consumption of level I and II analgesics at 3 months (D90 +/- 15 days). Methods/Experimental design: This is a single-blind prospective randomized controlled monocentric study. The study population will be composed of 37 sickle cell patients aged over 18 years. The patients included will be allocated into two groups: one group will receive the osteopathic treatment and the 2nd group will receive the "placebo" treatment. Analgesic consumption will be assessed by weekly self- questionnaire. The evaluation of the pain will be carried out by the visual analogue scale (VAS). The degree of stress will be measured using the Perceived Stress Scale (PSS). Patients will receive an osteopathic treatment or a "placebo" treatment, one session every 4 weeks for 12 weeks with a total of 3 sessions per patient. The duration of each session is 45 minutes. Pain and stress assessments will be done before each session. A final evaluation will be carried out 3 months after the end of the osteopathic or "placebo" treatment. Data analysis will be performed using SPSS version 17.0 software. The significance threshold will be set at 0.05. This is the first protocol that aims to evaluate, with scientific rigor, the impact of the osteopathic approach in the management of pain in patients with sickle cell disease.
Hematopoietic stem cell (HSC)-based gene therapies now offer curative potential for patients with sickle cell disease (SCD), with decreased toxicity compared to allogeneic hematopoietic cell transplantation. However, effective HSC-based gene therapy depends on collecting sufficient HSCs to generate the therapeutic product, and currently available mobilization regimens carry unacceptable risk for patients with SCD or do not reliably yield optimal numbers of HSCs for gene therapy. The investigators hypothesize that HSC mobilization with motixafortide (CXCR4i) alone and the combination of motixafortide plus natalizumab (VLA-4i) will be safe and tolerable in SCD patients. In addition, the investigators hypothesize that combined CXCR4 and VLA-4 blockade with motixafortide plus natalizumab will result in a rapid, robust, and synergistic increase in HSC mobilization to peripheral blood (PB) in patients with SCD, when compared to motixafortide alone.
Sickle cell disease (SCD) is an inherited disorder of the blood. SCD can injure the smallest blood vessels, which can cause pain and damage organs all over the body. Some treatments are available, but researchers need better ways to monitor the effects of these treatments. An imaging technique called near infrared spectroscopy (NIRS) may be helpful. Objective: To test NIRS as a tool for measuring oxygen levels, blood flow, and the makeup of skin and muscle in patients with SCD. Eligibility: People aged 18 years and older with SCD. Healthy volunteers are also needed as a comparison for the changes in SCD patients. Design: Participants will be screened. They will have a physical exam, and 1 teaspoon of blood will be drawn. Participants will have NIRS testing on their second visit. Probes will be placed on their skin. A blood pressure cuff will be placed on their arm. The cuff will be filled with air for up to 5 minutes and then released. Participants may be asked to breathe at a certain rate or hold their breath during these measurements. At this visit, participants will also have an ultrasound exam to get images of their heart. They will be monitored while they walk for 6 minutes. They will have 1 tablespoon of blood drawn. Their height, weight, and vital signs will be measured. Participants may be asked to return for up to 4 additional visits for NIRS testing within 120 days, but this is optional. The visits must be at least 3 days apart. Each visit will last up to an hour....
There is limited information on what causes injury to the heart in individuals with Sickle Cell Disease (SCD). Researchers in this study want to see if decreased blood flow to the heart during stress could be causing the heart damage seen in SCD patients. They also want to test people who don't have SCD to see if their hearts react the same way under stress. Primary Objective - To estimate the coronary flow reserve (CFR) (also referred to as myocardial perfusion reserve), as measured by PET stress-rest myocardial perfusion imaging, in SCD patients with and without diastolic dysfunction, and healthy controls. Secondary Objectives - To investigate the relationship between decreased CFR (quantified with PET stress- rest myocardial perfusion imaging) and presence of abnormal diastolic parameters
Sickle cell disease (SCD) is an autosomal recessive red blood cell blood disorder. One especially vital organ affected in SCD is the brain. Individuals with SCD have an increased risk of both overt cerebral infarctions and silent infarctions. The latter are brain lesions without apparent neurological sequelae. Since cortical neurons in the brain lack the ability to regenerate, tissue damage accumulates throughout the already shortened lifespan of individuals with SCD, resulting in far-reaching consequences such as significant cognitive impairment. Currently, only hematological stem cell transplantation can halt the multiorgan tissue damage. However, the criteria to determine the timing of curative therapy do not center the brain, despite that subtle anomalies of this critical organ can have long-lasting consequences. Since it is not yet known whether brain tissue damage precedes, parallels, or lags behind non-brain tissue damage, it is critical to map these effects in youth with SCD. While importantly comparing images with a healthy reference population. Understanding how the brain is affected is critical for clinical decision making, such as timing of potentially curative interventions but also, to prevent long term irreversible brain damage in youth with SCD. In this study, a cohort of 84 SCD patients between the ages of 6 and 18 at baseline, will undergo MR imaging, neurological examination, neuropsychological assessment and blood sampling three times in total, with intervals of two years; results will be innovatively compared with children included in the Generation R population study (±8000 MRIs children and (young)adults) 6-20 years of age). Our hypothesis, based on the inability of the brain to generate new cortical neurons following cell death, is that brain function is impaired earlier than other organ systems and that there is an age-dependent limit in the brain's ability to remodel itself based on neuroplasticity.
Sickle cell anemia (SCA) is a life-threatening hereditary hemoglobinopathy characterized by hemoglobin (Hb) polymerization that affects many people worldwide.Reduced physical capacity is common in people with SCA. Pilates is a form of physical activity that recently used in clinicial practice