View clinical trials related to Anemia, Sickle Cell.
Filter by:The primary objective of this study is to evaluate a potential behavioral intervention (MED-Go app). To meet this objective, the researchers will conduct a pilot randomized controlled trial to test the feasibility and acceptability of MED-Go app in adolescents and young adults (AYA) with sickle cell disease (SCD). The long-term goal of this research is to promote medication adherence behavior and improve health outcomes in AYA with SCD.
This is a multi-center multi-national rollover study to allow continued access to crizanlizumab for patients with sickle cell disease (SCD) who are on crizanlizumab treatment in a Novartis-sponsored study (parent study) and are benefiting from the treatment as judged by the investigator.
This clinical trial is a Phase 2/3 study that will evaluate the efficacy and safety of etavopivat and test how well etavopivat works compared to placebo to improve the amount of hemoglobin in the blood and to reduce the number of vaso-occlusive crises (times when the blood vessels become blocked and cause pain).
Our long-term goal is to reduce stress and improve sickle cell disease (SCD) pain control with less opioid use through an intervention with self-management relaxation/distraction exercises (RDE), named You Cope, We Support (YCWS). Americans living with SCD suffer recurrent episodes of acute and chronic pain, both of which are exacerbated by stress. Building on the successes of our prior formative studies, we now propose a well-designed, appropriately powered study to test efficacy of YCWS on outcomes (pain intensity, stress intensity, opioid use) in adults with SCD. We propose to recruit 170 adults for a randomized controlled trial of the short-term (8 weeks) and long-term (6 months) effects of YCWS on outcomes (pain, stress, and opioid use). Stratified on worst pain intensity (<=5; >5), we will randomly assign patients to groups: 85 to Control (Self-monitoring of outcomes + alerts/reminders), and 85 to Experimental (Self-monitoring of outcomes + alerts/reminders + use of YCWS [RDE + Support]). We will ask participants to report outcomes daily. During weeks 1-8, we will send system-generated alerts/reminders to both groups via phone call, text, or email to facilitate data entry (both groups) and intervention use support (experimental). If the patient does not enter data after 24 hours, study support staff will contact him/her for data entry trouble-shooting (both groups) and YCWS use (experimental). We will time stamp and track participants' online activities to understand the study context and conduct exit interviews on acceptability of the staff and system-generated support. We will analyze data using mixed-effects regression models (short-term, long-term) to account for repeated measurements over time and utilize machine learning to construct and evaluate models predictive of outcomes. Specific aims are: Aim 1: To determine the short-term effects of YCWS. Aim 2: To determine the long-term effects of YCWS. Aim 3 (exploratory): Using machine learning, to develop and evaluate models that predict patient outcomes based on their group assignment and on their personal (e.g., self-efficacy, sex, education, family income, computer experience, etc.,) and environmental characteristics (e.g., distance from care, quality of cell connection, etc.).
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.
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.
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)
The investigators will attempt to develop a more accurate equation to estimate eGFR in pediatric and adult sickle cell patients
Sickle cell disease (SCD) is a genetic blood condition causing long term health problems including pain and brain problems which affect quality of life. These may be made worse if patients have low night-time oxygen levels when the upper airways close repeatedly during the night (obstructive sleep apnoea). This is associated with increased pain, poorer concentration and increased kidney problems. Montelukast, widely used in the treatment of Asthma, has been shown to improve symptoms of obstructive sleep apnoea in patients without sickle cell anaemia. Investigators think this treatment could be useful in patients with sickle cell disease too. Early intervention with Montelukast could help prevent deterioration in concentration and thinking skills. The aim of this trial is to see whether young children with sickle cell disease randomised (randomise: the same as tossing a coin and not knowing whether it will come up heads or tails) to Montelukast treatment have better thinking skills compared with people randomised to placebo (tablet with no active medical ingredients - i.e. "sugar pill"). This means that the child could be on Montelukast treatment or he/she might be on placebo tablets.