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Showing 1-20 of 941 trials
NCT02327897
Background: \- Asthma is a serious clinical and public health problem. Researchers want to collect data to better understand how bacteria and other things in the environment can affect people's asthma. Eligibility: \- Nonsmoking adults age 18 - 60 who have moderate to severe asthma. Design: * Participants will complete a medical history form before the first visit. * Study visits will include collecting medical history, and conducting physical exam, lung and smoking tests. Participants will give blood, urine, stool, dust, saliva, and sputum samples. * Participants will take tests that measure their breathing abilities. They will give saliva samples for DNA study. They will get kits to collect stool and dust samples at home. They will fill out surveys. * Participants will have visits every 6 months for 5 years. They can schedule sick visits, if needed, at no cost to the participant. For all visits, they will have asthma check-ups and get treatment, at no cost to the participant. * Some participants may take part in a sub-study that includes one 4-hour visit. They will have medical history, physical exam, and lung tests. They will have urine tests to check for pregnancy and tobacco exposure. Then they will have bronchoscopy. For this, an intravenous line will be placed in an arm vein. The nose and throat will be numbed. A flexible fiber-optic tube will be inserted into their airways through the nose. Their airways will be examined and areas of their lung will be washed. A small sample of cells will be taken.
NCT07486401
The aim of this study is to evaluate usual care versus biomarker-directed care (using blood eosinophil counts) for the management of asthma patients in primary care setting. The study hypothesizes that BEC is a valuable biomarker that can guide asthma treatment, and result in reduction in asthma exacerbations, better symptom control and improvement in quality of life compared to usual arm in mild to moderate asthma patients in the primary care setting. Researchers would compare using blood eosinophil count guided to usual care to see if biomarker-directed asthma treatment and management
NCT07219173
The purpose of this study is to assess the safety and efficacy of brenipatide at different dose levels compared with placebo in participants with moderate-to-severe asthma. Study participation will last approximately 65 weeks, including screening, treatment, and follow-up periods.
NCT01577082
Primary objective To show the superiority of CHF 1535 (BDP/FF) pMDI (800/24 μg per day) over BDP HFA pMDI (800 μg per day) in terms of change from baseline to the entire treatment period in average pre-dose morning peak expiratory flow (PEF) in adult asthmatic patients not adequately controlled on high doses of ICS or on medium doses of ICS plus LABA. Secondary objective To evaluate the effect of CHF 1535 pMDI on clinical outcome measures and other lung function parameters and to evaluate the safety and tolerability profile.
NCT03272932
This study is to assess the prevalence of Asthma COPD Overlap in subjects with diagnosed asthma and chronic obstructive pulmonary disease (COPD). The subsequent morbidity and mortality of subjects will be followed up for 3 years.
NCT04706988
Increasing evidence supports that the respiratory microbiota, including viral and bacterial microorganisms, play important roles in respiratory health and disease. Microbial patterns in airways may induce distinctive endotypes of asthma. Previous studies suggest host-microbiota interactions in children may account for the heterogeneity of endotypes and clinical presentations. However, information on such relationship is limited in adults. Furthermore, how the upper airway microbiome is related to asthma endotype and phenotype is not well understood. Knowledge of microbiota in the airway allows exploration of therapeutic manipulation of the microbiome and targeting the development of asthma prevention strategies and the optimization of asthma treatment.
NCT03890666
This is a 12-week treatment, multicenter, open-label, randomized, parallel group comparison feasibility study to evaluate the effectiveness of the Albuterol eMDPI Digital System (DS), including inhaler, App, digital health platform (DHP) (Cloud solution), and dashboard, to optimize outcomes in participants at least 13 years of age or older with asthma. The study will consist of a screening visit, a 12-week open-label treatment period, and a follow-up telephone call (2 weeks following treatment completion). Participants with suboptimal asthma control will be enrolled in the study and randomized in a 1:1 ratio to 1 of 2 parallel groups stratified by investigational center: DS group participants utilizing the Albuterol eMDPI DS, including inhaler, App, DHP (Cloud solution), and dashboard, and CC group participants who will be treated with their standard of care albuterol-administering rescue inhalers and will not use the DS during the treatment period.
NCT06786767
The mainstay of asthma treatment are ICSs, mostly and usually combined with LABA. In the past decade LAMA had been accepted as an add-on treatment for patients on GINA treatment Steps 4 and 5. Recently, RCTs proved the efficacy and safety of fixed triple combinations of moderate and high dose of ICS and LABA, LAMA in a very selected asthmatic population, resulting in the market authorization of these products. However, there is a lack of evidence on the real-world effectiveness of these therapies, especially with regards to improvement in symptom scores and quality of life.
NCT05002621
The purpose of this study is to identify differentially expressed gene transcripts after initiation of mepolizumab in individuals with severe eosinophilic asthma (SEA).
NCT04639791
This study aims to prospectively assess the asthma control and management of asthma patients who are on step 4, 5 asthma of GINA in Hong Kong (on at least medium-dose ICS-LABA as controller therapy for asthma) and also observe their exacerbations over 2 years. In addition, this study will also assess patients who are on biologics for their suitability and outcome. The investigators hope this study will be able to provided data regarding the management and outcome of patients who have difficult-to-treat and severe asthma. The investigators plan to build a biologic registry for asthma that would be able to help local doctors to gain experience to the use of these new and expensive medications. This is a multi-centre study involving public hospitals in Hong Kong. This study is important as this will generate local data for healthcare planning for severe asthma in Hong Kong.
NCT04784351
This is a retrospective observational study drawing on data from the Brigham and Women's Home Hospital database. Sociodemographic and clinic data from a training cohort were used to train a machine learning algorithm to predict length of stay throughout a patient's admission. This algorithm was then validated in a validation cohort.
NCT06471257
An event-driven, Phase III study to evaluate the efficacy and safety of BDA MDI compared with AS MDI in reducing the risk of a severe asthma exacerbation in symptomatic Chinese adults with asthma.
NCT03822637
This study evaluates 20% n-acetylcysteine (NAC) in the treatment of moderate-to-severe asthma that is complicated by mucus in the airway, as determined by CT imaging. The study is a crossover design, which means that half the study participants will get 20% NAC in the first 14-day treatment period and placebo in the next 14-day treatment period; and the other half will get placebo in the first 14-day treatment period and 20% NAC in the next 14-day treatment period.
NCT07228052
This study aims to compare the efficacy of a one-time IM dose of dexamethasone versus a 5-day course of prednisone in adult ED patients presenting with asthma exacerbations. This is a randomized, controlled, double-blind, non-inferiority trial conducted at two urban EDs within the Montefiore Health System.
NCT07456033
The aim of this study is to evaluate the efficacy of depemokimab administered as an adjunctive therapy, in participants with Type 2 asthma at risk of exacerbations compared to the guideline recommended standard of care (SoC).
NCT05254314
This is a randomized placebo-controlled trial of semaglutide, an FDA-approved therapy for the treatment of type 2 diabetes mellitus and obesity, in adults with symptomatic asthma despite the use of inhaled steroids and with excess body weight. This study will test the central hypothesis that semaglutide will improve asthma control and reduce airway inflammation due to direct effects on the respiratory tract in adult asthma associated with obesity.
NCT01780142
Background: \- Asthma is a lung condition that causes difficulty breathing and decreased lung function. Some people with asthma have more severe disease symptoms. They may be less responsive to standard treatments such as steroids. Researchers want to compare severe asthmatics with mild or moderate asthmatics or people without asthma over a long period. This information may help identify new treatments for people whose asthma is not well controlled by standard medications. Objectives: \- To compare severe asthmatics with mild or moderate asthmatics, and healthy volunteers, to study the progression and outcomes of the disease. Eligibility: * Individuals at least 18 years of age who have been diagnosed with asthma for at least 1 year. * Healthy volunteers at least 18 years of age. Design: * This study will involve an initial visit to the NIH Clinical Center for all participants. Selected participants may be asked to return for repeat visits over a number of years. The test results from participants with asthma will be compared with those from the healthy volunteers. * All participants will be screened with a physical exam and medical history. * Participants may (but will not necessarily) have the following tests at each visit: * Complete medical history and physical exam * Blood, urine, sputum, and nasal cell samples * Breath tests and heart and lung function tests * Six-minute walk test to measure ability to exercise * Imaging studies such as chest x-rays, bone density scans, and sinus scans * Allergy skin testing * Vocal cord exam * Overnight sleep study * Participants may remain on the study for as long as they are willing to participate and do not develop health problems that will interfere with the study.
NCT06932263
This is a dose-range finding, double-blind, placebo-controlled, phase IIb study designed to assess efficacy and safety of tozorakimab administered subcutaneously in adult participants with uncontrolled asthma receiving medium-to-high dose inhaled corticosteroids.
NCT02740868
Aim of this study is to evaluate image quality and reproducibility of Xenon-129 and Inert fluorinated (19F) gas Magnetic Resonance Imaging (MRI) and to evaluate changes in lung structure and function in participants with cystic fibrosis (CF) and asthma compared to healthy controls.
NCT06529419
A dose range-finding study to assess the efficacy and safety of multiple dose levels of AZD8630 administered via a dry powder inhaler in adults with uncontrolled asthma at risk of exacerbations, receiving medium -to -high dose inhaled corticosteroid (ICS)/long-acting β2-agonist (LABA).