View clinical trials related to Anemia, Sickle Cell.
Filter by:Beta-thalassemias and hemoglobinopathies are serious inherited blood diseases caused by abnormal or deficiency of beta A chains of hemoglobin, the protein in red blood cells which delivers oxygen throughout the body.The diseases are characterized by hemolytic anemia, organ damage, and early mortality without treatment. Increases in another type of (normal) hemoglobin, fetal globin (HbF), which is normally silenced in infancy, reduces anemia and morbidity. Even incremental augmentation of fetal globin is established to reduce red blood cell pathology, anemia, certain complications, and to improve survival. This trial will evaluate an oral drug discovered in a high throughput screen, which increases fetal globin protein (HbF and red blood cells expressing HbF)and messenger ribonucleic acid (mRNA) to high levels in anemic nonhuman primates and in transgenic mice. The study drug acts by suppressing 4 repressors of the fetal globin gene promoter in progenitor cells from patients. The drug has been used for 50 years in a combination product for different actions - to enhance half-life and reduce side effects of a different active drug- and is considered safe for long-term use. This trial will first evaluate 3 dose levels in small cohorts of nontransfused patients with beta thalassemia intermedia. The most active dose will then be evaluated in larger subject groups with beta thalassemia and other hemoglobinopathies, such as sickle cell disease.
This is a single-arm, mechanistic clinical trial to measure predictors of senescence and the in vivo survival of transfused red blood cells (RBCs) in individuals with sickle cell disease (SCD) receiving chronic transfusion therapy (CTT). Chronic transfusion in patients with SCD is a common treatment. The efficacy of RBC transfusion therapy to treat or prevent complications of SCD may be hampered by variable survival of the transfused donor RBC. The overall aim is to see how long RBC survive in SCD patients who are chronically transfused. When a study participant has a regular blood transfusion the researchers will label a small portion of the RBCs that are transfused with biotin. The participant will return at Day 1, weekly for 3 months and monthly for 3 months to measure how long those RBCs survive. An optional sub-study using INTERCEPT RBCs will mirror the main study but will use INTERCEPT RBCs that have biotinylated for 1 RBC unit.
This study assesses if using the medication desmopressin will decrease nightime bedwetting in children with sickle cell disease.
Background: Sickle cell disease (SCD) is a chronic illness. It affects about 100,000 people in the United States. People with SCD have red blood cells that are sickle-shaped and impaired in their function. This results in a lifetime of complications that affect every organ system. People with SCD also are at greater risk for respiratory infections and lung problems. Researchers want to study how this population s stress, anxiety, fear, pain, sleep, and health care use are being affected by the COVID-19 pandemic. Objective: To study the extent and impact of life changes induced by the COVID-19 pandemic on people living with SCD in the U.S. Eligibility: People age 18 and older with SCD who live in the U.S. Design: Participants will complete a survey online. The questions will focus on the following: Medical history Mental and physical health Demographics Stress Resilience Health care use COVID-19 Beliefs about medical mistrust and participation in research. At the end of the survey, participants will be asked if they would like to take the survey again in the future. If they reply "yes," then they will be contacted by the study team in 6-9 months to take the survey again. They may complete the survey again in 6-8 months, 12-15 months, and 18-21 months. The survey should take less than 40 minutes to complete. Participants' data will be coded to protect their privacy. The coded data may be shared with other researchers.
The primary objectives of this prospective mixed-method interview study are to use semi-structured interviews in parents of sickle cell disease (SCD) patients to describe parental attitudes of research involving genomic sequencing, including concerns about participation and expectations from researchers and to use surveys to quantitatively measure genetic/genomic knowledge, trust in health care provider, and literacy/numeracy ability in parents of children with SCD and adolescents with SCD. Investigators hope to use the results of the planned surveys and interviews to reduce the risk of misunderstanding about DNA and genetic research and build strong relationships between SCD families and researchers in the future, and to design educational information and study materials that will help parents with children with SCD understand important details about DNA and genetic research.
Sickle cell disease (SCD) is the most common genetic disease in France. Its consequences on patient's life-course and quality of life need to be precisely identified among French patients and their family to be able to improve patients care according to their specific needs. The aim of the study is to accurately describe the impact of SCD on quality of life of patients living in France, or their family (for minor patients). The consequences of the disease on professional life, education and material condition of patients or their parents will be described by the patients themselves.
The purpose of this research study is to better understand how blood flow and metabolism change can influence brain development in the early decades of life. SCA participants and healthy controls are age and sex-matched for comparison. Within the SCA cohort, children with infarcts may have thinner cortices than those without, reflecting a greater loss. The investigators will examine brain blood flow and metabolism using magnetic resonance imaging (MRI). The brain's blood vessels expand and constrict to regulate blood flow based on the brain's needs. The amount of expanding and contracting the blood vessels may vary by age. The brain's blood flow changes in small ways during everyday activities, such exercise, deep concentration, or normal brain growth. Significant illness or psychological stress may increase the brain's metabolic demand or cause other bigger changes in blood flow. If blood vessels are not able to expand to give more blood flow when metabolic demand is high, the brain may not get all of the oxygen it needs. In extreme circumstances, if the brain is unable to get enough oxygen for a long time, a stroke may occur. Sometimes small strokes occur without other noticeable changes and are only detectable on an MRI. These are sometimes called "silent strokes." In less extreme circumstances, not having a full oxygen supply may cause the brain to grow and develop more slowly than when it has a full supply. One way to test the ability of blood vessels to expand is by measuring blood flow while breathing in carbon dioxide. Carbon dioxide causes blood vessels in the brain to dilate without increasing brain metabolism. During this study participants may be asked to undergo a blood draw, MRI, cognitive assessments, and brief questionnaires. The study team will use a special mask to control the amount of carbon dioxide the participants breathe in.
This is a study to evaluate the effect of voxelotor on daily physical activity and sleep quality, as measured by a wrist-worn device in participants with sickle cell disease (SCD) and chronic moderate anemia.
In parallel with the growth of American Thrombosis and Hemostasis Network's (ATHN) clinical studies, the number of new therapies for all congenital and acquired hematologic conditions, not just those for bleeding and clotting disorders, is increasing significantly. Some of the recently FDA-approved therapies for congenital and acquired hematologic conditions have yet to demonstrate long-term safety and effectiveness beyond the pivotal trials that led to their approval. In addition, results from well-controlled, pivotal studies often cannot be replicated once a therapy has been approved for general use.(1,2,3,4) In 2019 alone, the United States Food and Drug Administration (FDA) has issued approvals for twenty-four new therapies for congenital and acquired hematologic conditions.(5) In addition, almost 10,000 new studies for hematologic diseases are currently registered on www.clinicaltrials.gov.(6) With this increase in potential new therapies on the horizon, it is imperative that clinicians and clinical researchers in the field of non-neoplastic hematology have a uniform, secure, unbiased, and enduring method to collect long-term safety and efficacy data. ATHN Transcends is a cohort study to determine the safety, effectiveness, and practice of therapies used in the treatment of participants with congenital or acquired non-neoplastic blood disorders and connective tissue disorders with bleeding tendency. The study consists of 7 cohorts with additional study "arms" and "modules" branching off from the cohorts. The overarching objective of this longitudinal, observational study is to characterize the safety, effectiveness and practice of treatments for all people with congenital and acquired hematologic disorders in the US. As emphasized in a recently published review, accurate, uniform and quality national data collection is critical in clinical research, particularly for longitudinal cohort studies covering a lifetime of biologic risk.(7)
Pain is the primary complication of sickle cell disease (SCD), including vaso-occlusive crises and more persistent, chronic pain. SCD-related pain is associated with significant functional impairment, spanning poor school attendance, decreased quality of life, and stress and mood difficulties. Pharmacological approaches are the first-line treatment for SCD-related pain, but these can be costly and have unwanted side effects. Given limitations from pharmacological approaches and the influence that poor behavioral responses have on disease management and health outcomes suggest a critical need for alternative and adjunctive treatments. Due to gaps in available behavioral treatments specifically designed for addressing common challenges associated with pain management in pediatric SCD, the investigators developed a manualized behavioral therapy protocol by tailoring existing evidence-based treatments. The overall goal of the intervention is to reduce the impact of pain on daily functioning in pediatric SCD. This study will empirically test the feasibility and preliminary efficacy of this intervention for youth with SCD. Children and adolescents with SCD between the ages of 8 and 17 years old (n=20) will be recruited to complete the treatment protocol. Feasibility will be assessed by examining participation and program completion rates, as well as feedback from a treatment acceptability questionnaire and qualitative interview. Participants will complete baseline assessments, weekly questionnaires, and post-treatment assessments (post-intervention assessment, follow-up time points: 1-month following the intervention, and 3-months following the intervention).