How fungi in the home affect asthma, ABPA and bronchiectasis
Studies indoor and outdoor fungal exposure in adults with asthma, ABPA or bronchiectasis.
Plain-language title generated from the registry record
Registry title: Effects of Environmental Fungal Exposure on Bronchial Asthma, ABPA and Bronchiectasis
Key facts
- Where
- Ningbo, ChinaSee the site
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for healthy adults aged 18 to 80 with no lung disease and no allergies. It compares them with people who have asthma, ABPA or bronchiectasis.
- Age
- 18 to 80 years old
- Sex
- All sexes
- Disease stage
- No asthma, ABPA or other long-term lung disease. No allergic disease such as allergic rhinitis, eczema or food allergy.
- Earlier treatment
- No antibiotics, antifungal drugs, immunosuppressants, cytotoxic drugs or hormones taken through the body in the 4 weeks before enrolment.
- Biomarker or test result
- Normal or near-normal lung function. Normal blood counts and normal IgE levels for common allergens such as dust mites, pets, cockroaches, mold and pollen.
Main reasons for not taking part
- Asthma, ABPA, bronchiectasis or another lung disease such as COPD, active tuberculosis or lung cancer
- Serious other illness, such as heart attack, stroke, heart failure, liver failure or kidney failure
- Cancer
- Antibiotics, antifungal drugs, immunosuppressants, cytotoxic drugs or hormones taken through the body in the last 4 weeks
- Any reason that makes induced sputum testing unsafe
Read by machine on 12 November 2026.
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 80 years old?
Source: NCT07313904, who can take part
Where in China
- The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang RecruitingNingbo, ChinaContact: Chao CAOTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- First Affiliated Hospital of Ningbo University
- Trial code
- NCT07313904
- Record updated
- 2 January 2026
- Original description
This study is a prospective, observational study of patients aged 18-80 years with clinical diagnosis of bronchial asthma, allergic bronchopulmonary aspergillosis (ABPA), bronchiectasis and healthy subjects. Among them, the bronchial asthma group will be divided into asthma control group, asthma partial control group and asthma uncontrolled group according to the GINA asthma control classification. Record the baseline information of the subjects in detail, including basic information, disease course, smoking, previous acute attacks and hospitalizations, long-term medication, etc. (including the frequency, dose and duration of ICS use, antifungal drug type, dose, duration of use, and course of treatment), and evaluate and record environmental factors (such as indoor).Humidity, temperature, ventilation, pet keeping, plant planting, etc.) and other lifestyle factors that may affect disease control and fungal exposure. The patient's disease status was assessed using questionnaire scores.Read full original descriptionShow less
Effects of Environmental Fungal Exposure on Bronchial Asthma, Allergic Bronchopulmonary Aspergillosis (ABPA), and Bronchiectasis
This study is a prospective, observational study of patients aged 18-80 years with clinical diagnosis of bronchial asthma, allergic bronchopulmonary aspergillosis (ABPA), bronchiectasis and healthy subjects. Among them, the bronchial asthma group will be divided into asthma control group, asthma partial control group and asthma uncontrolled group according to the GINA asthma control classification. Record the baseline information of the subjects in detail, including basic information, disease course, smoking, previous acute attacks and hospitalizations, long-term medication, etc. (including the frequency, dose and duration of ICS use, antifungal drug type, dose, duration of use, and course of treatment), and evaluate and record environmental factors (such as indoor).Humidity, temperature, ventilation, pet keeping, plant planting, etc.) and other lifestyle factors that may affect disease control and fungal exposure. The patient's disease status was assessed using questionnaire scores.
Sputum samples were taken at the time of enrollment.Set (asthma ABPA group uses sputum induction), pulmonary function test and bronchodilator test, FeNO measurement (asthma ABPA group only), blood routine test, Aspergillus-specific IgE and IgG detection, total immunoglobulin IgE, allergen detection, etc. Dust was collected indoors (bedrooms), outdoor (balconies) and on the surface of air conditioners or fans (if applicable) in the subject's living environment, and environmental data such as ambient temperature, humidity, and particulate matter concentration were recorded. 18S rRNA technology was used for sputum and dust fungus detection, and ELISA was used for asthmatitis symptomatic markers, which assess the impact of fungal infections on the disease. Follow-up for each subject 6 months, 6 months after enrollment, the patient's symptom changes, acute exacerbations/exacerbations, and prognosis were recorded, and relevant questionnaire scores were completed.
Inclusion: Age range of 18-80 years old (including 18 and 80 years old), gender and race are not limited; No history of asthma, ABPA, or other chronic respiratory diseases; No history of allergic diseases, such as allergic rhinitis, eczema, or food allergies; Pulmonary function is normal or close to the normal range; Laboratory testing:; Blood routine: High sensitivity C-reactive protein, white blood cells, neutrophils, lymphocytes, and monocytes are all within the normal range; Allergen testing: IgE levels for common allergens such as dust mites, cat hair, dog hair, cockroaches, mold, and pollen are normal or close to the normal range.
Exclusion: Cancer patients who suffer from serious other systemic diseases, such as myocardial infarction, stroke, hypertensive crisis or refractory hypertension, severe arrhythmia, heart failure, aortic aneurysm, liver failure, renal failure, hematological disorders, etc., and have recently been discovered or are currently receiving treatment; Four weeks prior to enrollment, systemic use of antibiotics, antifungal drugs, immunosuppressants, cytotoxic agents, hormones, etc; Suffering from bronchial asthma ABPA、 Bronchiectasis or other respiratory diseases: chronic obstructive pulmonary disease, active pulmonary tuberculosis, pulmonary embolism, lung cancer, pneumothorax, hemoptysis, pulmonary arterial hypertension, interstitial lung disease, etc; Other individuals with contraindications for induced sputum testing:.