View clinical trials related to Anemia, Sickle Cell.
Filter by:A prospective, single-arm, intervention study of oral alendronate in adults with sickle cell disease and osteonecrosis
The goal of this clinical trial is to test an COVID-19 vaccination information video in adults with sickle cell disease. The main questions it aims to answer are why are some adults with sickle cell disease hesitant to receive COVID-19 vaccination and whether a COVID-19 vaccination information video tailored for people with sickle cell disease will reduce vaccine hesitancy. Participants will complete a brief survey before and after watching a short video with information on vaccine safety, efficacy, and the greater impact of COVID-19 infection on people with sickle cell disease.
Sickle cell disease is the most common inherited genetic disorder, accounting for 300,000 births worldwide per year. It is caused by an autosomal recessive mutation of the β-globin gene, responsible for an abnormal hemoglobin, the main protein in red blood cells, responsible for transporting oxygen from the lungs to the tissues. The abnormal hemoglobin, known as "Sickle" or S, deforms the red blood cell, causing chronic hemolytic anemia, organ damage (heart, spleen, etc.) and vaso-occlusive crises. Therapeutic progress and specialised patient follow-up have considerably improved the vital and functional prognosis of children and adolescents with sickle cell disease. Physical fitness, measured during a cardiorespiratory exercise test (CPET), is used to determine maximal oxygen uptake (VO2max). Patients with sickle cell disease have a multifactorial limitation of exercise tolerance, which may affect their physical fitness. Authors have shown that VO2max is impaired in children and adolescents with sickle cell disease, independently of their baseline hemoglobin level. Yet VO2max is a key determinant of health-related quality of life (HRQoL) in patients being monitored for a chronic disease. In the past, our team has contributed to the assessment of HRQoL in several groups of pediatric patients suffering from chronic disease (congenital heart disease, PAH). To date, the link between impaired physical fitness and HRQoL has not been demonstrated in sickle cell children. The pathophysiological determinants of reduced physical capacity and exercise tolerance in sickle cell patients have also not been fully elucidated. Studying these factors will enable us to propose appropriate treatment in the future, with the aim of improving physical fitness and HRQoL in children and adolescents with sickle cell disease.
Sickle cell disease (SCD) is associated with arthropathy. Arthropathy may require periarticular corticosteroid injection therapy. This observational study examines efficacy, and safety of steroid injections in SCD patients. Data collection includes patient's gender, age, race, smoking history, alcohol intake, analgesic use, pain score, sleep quality, limb joint injections, post-injection analgesia, and post-injection complication. Pain is measured using numeric pain scale. Sleep quality is measured using Likert scale.
This research study is examining multiple doses of voxelotor (a study drug intended for treatment of sickle cell disease) and how it interacts with additional substrates (substrates are drugs or other substances that are metabolized by cytochrome enzymes. The substrates used in this study are FDA approved medications). The study will help to determine the safety and tolerability of the study drugs taken together, as well as the pharmacokinetics (PK) on how your body processes and responds to the combination of the study drug and substrates. Although these drugs are FDA approved, their use in this study is experimental.
The study will test a new medicine, etavopivat, for sickle cell disease and see if it is safe and helpful for participants with sickle cell disease who are at an increased risk of stroke. Participants will be divided into two cohorts depending on their transcranial doppler (TCD) ultrasound results and whether or not they receive hydroxyurea (medication that they may already be taking). In one cohort, participants with conditional transcranial doppler (TCD) or participants with abnormal TCD who are not able to receive hydroxyurea will be included. The study doctor will determine if the TCD result is conditional or abnormal. In another cohort, participants with conditional TCD or participants with abnormal TCD who are receiving a stable dose of hydroxyurea will be included. The study doctor will determine if the TCD result is conditional or abnormal. The participant will start a 52-week (1 year) treatment period. The participant will take 400 milligrams (mg) of etavopivat once a day for the 52 weeks. The dose of 400 mg will be taken as 2 tablets by mouth, each containing 200 mg of etavopivat. Etavopivat may be taken with or without food. Each dose should be taken with a glass of water. As part of the study, the participants will be asked to visit the clinic frequently. At the end of the study, if deemed appropriate by you, your child, and the study doctor, your child may be offered the opportunity to participate in a separate study to continue receiving etavopivat.
Primary aim to determine the effects of immersive VR on pain management in children with SCD. Secondary aim to determine the effects of immersive VR in musculoskeletal dysfunction in children with SCD and health-related quality of life.
The purpose of the study is to evaluate the efficacy and safety of CTX001 (exa-cel) in adolescent and adult participants with severe sickle cell disease (SCD), βS/βC genotype (HbSC).
Sickle cell disease (SCD) is associated with a lifetime of medical and socio-behavioural complications that require coordination of care from multidisciplinary teams. Access to adequate care for SCD is important as inadequate access can contribute to increased acute care utilization, disjointed care delivery, and earlier mortality for many SCD patients. Hydroxyurea (HU) is the first drug approved for the treatment of SCD and improves many adverse outcomes of SCD and yet its use remains sub-optimal. This mixed-methods study aims to identify the barriers and enablers that SCD patients, caregivers of children (under age 18 years), and health care providers (including physicians, nurses and pharmacists) identify for health care access and HU utilization. The findings may guide development and implementation of strategies to improve access to SCD healthcare and HU uptake which may result in significant benefits to patients, families and the healthcare system including possible reduction in healthcare utilization. Participants will be recruited from the Sickle Cell Unit, Kingston and from all four Jamaican regional health authorities. Questionnaires and interview guides for provider and patient/caregiver assessments are adapted, with permission, from the Sickle Cell Disease Implementation Consortium tools. The study will also examine data on HU usage from the National Health Fund of Jamaica since its addition of SCD to its list of chronic illnesses in 2015. All data collected will be de-identified and maintained in a secure database, with access limited to key personnel. There is minimal risk to participants. Participants will be selected only because of the specific problem under investigation, and not because of easy availability, diminished autonomy, or social bias.
Rationale: Non-myeloablative allogeneic stem cell transplantation (SCT) has become a feasible curative treatment option for sickle cell disease (SCD) patients with an available matched sibling donor. Chemotherapy free conditioning with alemtuzumab and 3 Gy total body irradiation (TBI) is increasingly being used as preferred conditioning scheme for these patients. This regimen typically results in mixed donor chimerism and has only few toxic effects. However, the risk of graft failure (rejection) is still significant, with an occurrence of 13% in the latest series. Levels of T cell chimerism are crucial for the success of this kind of transplantation. A donor T cell level of at least 50% at 1-year post-transplantation seems to be sufficient to allow the discontinuation of immunosuppressive medication without risk of graft rejection. Low levels of alemtuzumab prior to or shortly after SCT are thought to facilitate rejection of the donor graft. Recently, a positive correlation between alemtuzumab levels on day+14 was found with levels of T cell chimerism +2 and +4 months post-transplantation in adult SCD patients receiving matched sibling donor SCT. However, in this study alemtuzumab levels prior to the infusion of hematopoietic stem cells and beyond day +28 post-transplantation were not measured. Furthermore, the alemtuzumab levels were measured in 2 patient groups undergoing two different conditioning regimens. Here, the investigators aim to thoroughly investigate the correlation of alemtuzumab levels and T cell chimerism. This will be the first study involving SCD patients receiving matched sibling donor SCT with alemtuzumab/TBI conditioning that includes alemtuzumab level measurements before the infusion of hematopoietic stem cells and beyond 1-month post-transplantation. Findings from this study will improve the insights into the etiology of graft failure in these patients and might ultimately lead to a more personalized approach in dosing alemtuzumab in order to achieve a more robust and stable engraftment of donor hematopoietic stem cells. Objectives: To investigate whether serum alemtuzumab concentrations are predictive of the robustness of engraftment in SCD patients undergoing a matched sibling donor transplantation with alemtuzumab/TBI conditioning resulting in mixed chimerism. Study design: Prospective observational laboratory study. Serum alemtuzumab concentration will be measured at various time points before and after stem cell infusion (days -3, 0, +7, +14, +28, +60). Study population: Adult SCD patients that are planned for a matched sibling donor transplantation with alemtuzumab/TBI conditioning at the Amsterdam UMC. Main study parameters/endpoints: The correlation between serum alemtuzumab concentration and levels of donor chimerism. Secondary endpoints: correlation between serum alemtuzumab levels and patients with and without successful engraftment. Correlation of serum alemtuzumab levels and the dosing of alemtuzumab in mg/kg, number of patient lymphocyte count and total number of infused enucleated donor-derived cells.