Active clinical trials for "Asthma"

The investigators aim to determine the optimal number of measurements required for multiple-breath-washout derived lung function parameters in adults with pulmonary disease as well as in healthy controls

The pattern of lower airway inflammation in asthma is heterogeneous, but in many patients, the polymorphonuclear neutrophil (PMN) is the predominant granulocyte infiltrating the airspaces. Although it is known to have an important function in innate immune defense, the role of the PMN in asthma has not been well elucidated. In work in progress, the investigators have identified the receptor for IL-5 on the surface of bronchoalveolar lavage (BAL) PMNs in a subset of children with severe, treatment-resistant asthma, a characteristic that is not found in peripheral blood neutrophils. While the function of this IL-5 receptor has yet to be determined, preliminary evidence strongly supports a mechanism linking neutrophilic with type 2 inflammation in the lower airways of children with asthma, a discovery that has exciting potential to modify the treatment of asthma. The primary objective of this observational cross-sectional study is to test the overall hypothesis that therapeutic intervention directed against the IL-5R on lung PMNs will decrease inflammation and improve clinical outcomes in patients with poorly controlled asthma. The secondary study objective is to demonstrate that IL-5R expression on lung-infiltrating PMNs is functional, will activate known IL-5R-induced signaling pathways, and will lead to enhanced PMN pro-inflammatory activity including increased PMN recruitment, prolonged survival, degranulation, and release of reactive oxygen species.

The aim of this project is to estimate the quality of life for people with asthma and specifically the loss in quality of life associated with an asthma-related crisis event (accident and emergency (A&E) attendance or admission).

The primary objective of this study is to assess the function and reliability of a non-invasive, skin-like electronic sensor. We hypothesize that this skin sensor will address an unmet need to wirelessly, noninvasively, and rapidly assess critical vital signs and other measures essential to healthcare monitoring for patients with asthma and anaphylaxis.

The study involves a new device, called 'N-Tidal C', which uses a method that has the potential to predict when asthma attacks are about to happen. The device works by accurately measuring an individual's exhaled CO2 waveform. A person has to breathe in and out through the mouthpiece at their normal relaxed rate of breathing. It does not need any extra effort and therefore has considerable benefits over current breathing tests which require significant patient effort.

Background: Asthma is a heterogeneous respiratory disease and the most common chronic disease in children. A small subset of children has continuous poor asthma control despite appropriate adherence to asthma medication. There is a clinical need to identify these children as early as possible to optimize treatment and/or to find therapeutic alternatives. Therefore, the "Systems Pharmacology approach to uncontrolled Pediatric Asthma" (SysPharmPediA) study was set up. Objective: To establish a cohort of pediatric moderate-to-severe uncontrolled and controlled patients with asthma in order to investigate pathophysiological mechanisms underlying uncontrolled moderate-to-severe asthma in children on maintenance treatment, using a multi-omics systems medicine approach. Methods: In this multicenter observational case-control study, moderate-to-severe asthmatic children (n=145, age 6-17 years), were included in specialized hospitals in four European countries (Netherlands, Germany, Spain and Slovenia). Recruited subjects were selected based on good asthma control (controlled asthmatics, n=54) or poor asthma control / recurrent exacerbations (uncontrolled asthmatics, n=91). Comprehensive details concerning demographics, current and past patient/family history and clinical characteristics were collected. In addition, systems-wide omics layers, including epi(genomics), transcriptomics, microbiome, proteomics and metabolomics will be evaluated from multiple collected, relatively non-invasive, samples of from the recruited individuals, such as: blood, feces, saliva, nasal swabs and exhaled breath. Follow-up visits were performed 6 and 12 months after inclusion.

Listening sessions: The research team will collect qualitative data from the listening sessions (focus groups) using a semi-structured iterative focus group guide.

prospective multicenter observational study. Parents whose children meet the inclusion criteria complete a questionnaire assessing the child's follow-up, the management of the current asthma attack, and the treatment provided at home. The main objective is to calculate the prevalence of placement of short-acting bronchodilators. The secondary objectives are to describe the factors associated with their implementation.

DESIGN A multi-centre mixed methods study of a new asthma specific quality of life questionnaire including limited clinic data. AIMS To collect further quantitative data to validate a new asthma quality of life scale, the Severe Asthma Questionnaire (SAQ). To determine the Minimum Clinically Important Difference (MCID) of the SAQ OUTCOME MEASURES Questionnaires: The Severe Asthma Questionnaire (SAQ) The Mini Asthma Quality of Life Questionnaire (MiniAQLQ) The EQ-5D-5L The Asthma Control Test (ACT)/ Asthma Control Questionnaire (ACQ) Global Rating of Change Questionnaire (GRCQ) Clinical data comprises: Spirometry BMI Asthma severity Health care utilisation: ED attendance in the last 12 months, Hospital admissions in the last 12 months; Number of exacerbations in the last 12 months requiring OCS Prednisolone dose mg/day (if oral steroid dependent). POPULATION All patients aged 16 years or over, who have attended one of three participating UK specialist asthma centres for the validation study and with data also collected from Derriford Hospital's Chest Clinic (DHCC) for use in determining Minimum clinically Important difference. ELIGIBILITY Over 16 years of age Diagnosis of Severe Asthma DURATION 18 months

Retrospective secondary data collection observational chart review study. Data collection and analysis will be performed on a cohort of patients who have previously been enrolled on the BPAP. Approximately 300 patients taking part in the BPAP between April 2018 and November 2019 and who meet the eligibility criteria will be recruited to participate in the study. Data for each participant in the study will be obtained retrospectively with a focus on obtaining data at baseline (12 months prior to first benralizumab dose or at first assessment in the severe asthma center if <12 months), Index date (date of first benralizumab dose) and at least up to 24 months after index date. Primary Objectives To describe baseline demographic and clinical characteristics of severe eosinophilic asthma patients enrolled in the BPAP To describe background treatment patterns of severe eosinophilic asthma patients at baseline and after benralizumab initiation Secondary Objectives: To describe clinical outcomes after initiation of benralizumab therapy in severe eosinophilic asthma patients treated with benralizumab at 12 and 24 months To describe patients' adherence to benralizumab, persistence and discontinuation rates and reasons for discontinuation at 12 and 24 months