View clinical trials related to Sickle Cell.
Filter by: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.
Acute Chest Syndrome (ACS) is a pulmonary complication of sickle cell disease (SCD) representing the leading cause of death and the second cause of hospitalization among adult patients. Pulmonary vaso-occlusion is one of the main pathophysiologic hypotheses during ACS. Our hypothesis is that therapeutic anticoagulation may reduce the severity of ACS via the alleviation of pulmonary thrombosis. The main objective of this prospective, randomized, double-blind study is to test the efficacy and safety of a curative anticoagulation strategy during ACS. The main efficacy endpoint is time to ACS resolution. The main safety endpoint is number of major bleedings. A thoracic CT scan will be performed to check for pulmonary artery thrombosis. If the CT scan is positive (thrombosis within a large elastic artery), the patient will not be randomized and will be treated with a curative anticoagulation. If the CT scan is negative, the patient will be randomized to receive subcutaneous anticoagulation with low molecular weight heparin (tinzaparin) either at a curative dose (175 Unit International (UI)/kg/day for 7 days) or at a prophylactic dose (4500 UI/day).
Background: - Knowing one s family medical history is a part of staying healthy. Some health risks run in families, and knowing these risks can promote more healthy behavior. Different social and cultural factors may affect how family members share this information. Genetic risk information that is shared in one family may not be shared in the same way in another. This information may also be shared differently between spouses, siblings, or parents and children. It may even be shared with more distant relatives. Knowing the information that family members share and how they share it may help researchers improve genetic disease treatment and support plans. Family surveys of people who have genetic health risks may help provide this information. Objectives: - To study how family members affected by genetic-related diseases share health information with each other. Eligibility: - Individuals at least 18 years of age who can read English or Spanish. - Participants affected by a genetic disease or be related or married to someone who has the disease. Design: - Participants will be screened with an initial questionnaire. They will identify their genetic disease and provide a basic health history. - Participants who have the disease will complete an online survey or participate in a personal interview. The questions will take about 45 minutes to 1 hour to answer. The survey will ask about family health history and family support. Participants will also provide referrals to a spouse or relatives who will participate in the study. - The spouse or relative will answer a similar survey. The survey will ask about health history and support for the spouse/relative with the disease. - A gift card will be given as thanks for participating in the study.
The primary objective is to determine the feasibility of attaining acceptable rates of donor cell engraftment (>25% donor chimerism at 180 days) following reduced intensity conditioning (RIC) regimens in pediatric patients < 21 years receiving cord blood transplantation for non-malignant disorders.