Active clinical trials for "Cystic Fibrosis"

Whole genome sequencing of Korean patients with idiopathic bronchiectasis and their family will perform to identify disease-causing variants.

To obtain prospective real world data of the effect of lumacaftor/ivacaftor or tezacaftor/ ivacaftor on small airway disease in children aged 6-18 years with cystic fibrosis (CF) homozygous for F508del. The effect of the medication on small airway disease is evaluated by measurement of multiple breath washout (MBW) with its outcome parameter lung clearance index (LCI) and the Perth-Rotterdam Annotated Grid Morphometric Analysis for CF (PRAGMA-CF) cpmputed tomography (CT) score. In addition the relation between changes in LCI and PRAGMA-CF score is evaluated.

The respiratory system involvement in cystic fibrosis(CF) influences the prognosis and course of disease. Respiratory assessment is based on spirometry, but its main parameter, the maximal expiratory volume in the first second (FEV1), does not reflect the initial peripheral impairment of airways. Another pulmonary function test (PFT) validated for CF children follow-up is measurement of "gas trapping", reflecting ventilation inhomogeneity and incipient airways impairment. "Gas trapping" can be obtained by lung volume measurement (functional residual capacity, FRC) by plethysmography and helium dilution technique, but these tests are inconvenient for children due to their long length (~30min). A complete PFT is routinely performed once a year. It also includes a measurement of Lung Clearance Index (LCI) reflecting ventilation inhomogeneity. Capnography is a non-invasive PFT technique, does not require subject's active cooperation, is of short duration and could replace the traditional PFT for CF children follow-up. The capnograph is integrated into the device measuring LCI and data can be retrieved and analyzed afterwards. Capnographic indices reflect ventilation inhomogeneity. The hypothesis is that capnographic indices change in the presence/absence of "gas trapping" in CF children. The main objective is to show that the capnographic index of efficacy (EFFi) is significantly different between CF children "with gas trapping" and CF children "without gas trapping". The secondary objectives are: to compare the other capnographic indices between CF children "with gas trapping" and CF children "without gas trapping": the slope of the ascending phase, α; the slope of the alveolar plateau, β; the angle Q between α and β; the positive peak of the first-order derivative, F'CO2, which reflects the ascending phase; the first negative peak of the 2nd order derivative, F "CO2, which reflects the curvature between the ascending phase and the alveolar plateau. to compare the results of the capnographic indices with the results of the FEV1 in identifying the presence / absence of "gas trapping"; to compare the results of the capnographic indices with the results of the LCI in identifying the presence / absence of "gas trapping"

The study will be conducted over a 6 months period. For the first three months, the child will be accompagned with a connected companion. After this period, the companion will be removed for three months in oder to prove this companion could improve treatment adherence for children suffering from cytolisis fibrosis. This study will be conducted at the University Hospital Center of Rennes and Hospital Center of Saint-Brieuc.

Introduction: Bronchiectasis is a chronic lung disease in which the underlying condition causes permanent damage to the conducting airways. Bronchiectasis is associated with considerable morbidity and poor quality of life. While cystic fibrosis (CF) is the most common cause of bronchiectasis in childhood, non-CF bronchiectasis is associated with a wide variety of disorders. CF bronchiectasis patients show reduced daily habitual physical activity and exercise capacity. Cardiopulmonary exercise test (CPET) is increasingly gaining importance in clinical medicine and considered the gold standard exercise test for assessing aerobic exercise capacity. The test objectively evaluates exercise physiological functions, may help assess morbidity and predict the outcome and mortality in different clinical circumstances and may serve as a basis for individualized exercise prescription within the limitation of the disease. Unlike CPET in CF, there is a paucity of data on exercise capacity using CPET in non- CF bronchiectasis patients, and on the implications of physical activity on non- CF bronchiectasis morbidity and mortality. Aim: To evaluate and compare exercise capacity in CF and non-CF bronchiectasis patients. Methods: This will be a cross-sectional retrospective/prospective study population. The retrospective study will include data analysis of patients that preformed CPET as part of their clinical evaluation. In the prospective study, patients that are scheduled to perform CPET as part of their clinical evaluation will sign (or legal guardian) informed consent prior to participation. Patients will be recruited from the exercise clinic at the Pediatric Pulmonary Institute at the Rappaport Children's Hospital. Inclusion criteria: 1. Children and adults (age >7 years, height >125cm), with CF and non CF bronchiectasis. 2. Completed a maximal CPET test according to accepted criteria; (maximal VO2 > 80% predicted, maximal heart rate > 80% predicted, acceptable RER (RER > 1.0 in children (under 18 years), RER > 1.05 for adults) or reaching a VO2 plateau..3. Evidence of bronchiectasis in computed tomography (CT). Exclusions criteria: preforming submaximal CPET, lack of data from the exercise test, exacerbation of patient's condition within three days before the exercise evaluation, relevant related chronic diseases that affecting test results.

Gastro-oesophageal reflux (GOR) has been found to be prevalent in children with cystic fibrosis (CF)and may further worsen lung damage via reflex bronchospasm or pulmonary aspiration. Chest physiotherapy may result in increased episodes of GOR as demonstrated in children. Lung transplantation may worsen pre-existing GOR. This study will determine the prevalence, severity and significance of symptomatic and silent GOR in adults with CF before and after lung transplant using 24hr oesophageal pH monitoring, a valid symptom questionnaire, quality of life questionnaires and gastric emptying studies. This study will identify the extent of GOR in a large adult CF population and the impact on lung function and quality of life together with the effects of medical and physiotherapy treatment on gastro-oesophageal function.

The researchers are investigating a novel technique, the multi breath nitrogen washout technique, to measure airway changes in various respiratory diseases.

The purpose of this study is to use the Medication Adherence Reasons Scale (MAR-Scale) to determine the extent of non-adherence to specific medications indicated to treat cystic fibrosis, hemophilia (A or B), idiopathic pulmonary fibrosis, myasthenia gravis, and sickle cell disease, and to identify the top patient-reported reasons for non-adherence. Internal reliability of the MAR-Scale will also be assessed in each condition.

The goal of this study is characterize the changes in bacterial diversity of the upper respiratory tracts of infants with cystic fibrosis (CF). Another goal is to determine when CF patients become colonized with pathogenic bacteria that are responsible for the lethal lung damage in children with CF. Ten subjects will be recruited into the study. Throat swabs will be collected at 6-8 weeks of age, 3 months, 6 months, 9 months, and 12 months of age in order to chart any changes in the bacterial populations of the respiratory tract. Clinical data will also be collected to evaluate the possible influence of external factors on changes in the microbial communities. This study will provide preliminary data on whether probiotics can eradicate the colonization of the respiratory tract by pathogenic bacteria.

The purpose of this study is to compare the incidence of nausea and vomiting following short intermittent versus prolonged intermittent infusion of meropenem.