Examining Changes in Nasal IL-1 During Acute Asthma Exacerbation in Adolescents (Attack Asthma)
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ClinicalTrials.gov Identifier: NCT04748055 |
Recruitment Status :
Recruiting
First Posted : February 10, 2021
Last Update Posted : June 21, 2022
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Condition or disease |
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Asthma |
Study Type : | Observational |
Estimated Enrollment : | 60 participants |
Observational Model: | Cohort |
Time Perspective: | Prospective |
Official Title: | A Pilot Study Examining Changes in Nasal IL-1 During Acute Asthma Exacerbation in Adolescents |
Actual Study Start Date : | July 27, 2021 |
Estimated Primary Completion Date : | November 2023 |
Estimated Study Completion Date : | November 2023 |
- Change from baseline in Nasal IL-1β (pg/mL) Concentrations over time during Asthma Exacerbation [ Time Frame: Baseline and up to 5 days from the time asthma exacerbation is diagnosed ]Nasal epithelial lining fluid (NELF) is collected during a period of wellness (baseline) and daily during acute asthma exacerbation (defined by pre-specified criteria) for 5 days. The change from baseline in nasal IL-1β concentrations during acute asthma exacerbation will be measured for each of the 5 days of the exacerbation to measure the degree of change over time and to identify the timing of peak IL-1β concentration.
- Change from Baseline in Forced Expiratory Volume in the First Second (FEV1) Percent (%) Predicted over time during Asthma Exacerbation [ Time Frame: Baseline and up to 5 days from the time asthma exacerbation is diagnosed ]FEV1 will be measured during a period of wellness (baseline) and daily during acute asthma exacerbation defined by pre-specified criteria for 5 days. The change from baseline in FEV1 % predicted during asthma exacerbation will be measured for each of the 5 days of the exacerbation to determine the degree of change over time.
- Change from Baseline in Nasal Concentrations of Other Relevant Inflammatory Cytokines/Chemokines over time during Asthma Exacerbation [ Time Frame: Baseline and up to 5 days from the time asthma exacerbation is diagnosed ]Nasal epithelial lining fluid (NELF) is collected during a period of wellness (baseline) and daily during acute asthma exacerbation defined by pre-specified criteria for 5 days. The change from baseline in nasal cytokine and chemokine concentrations during acute asthma exacerbation will be measured for each of the 5 days of the exacerbation to determine the degree of change over time.
- Correlation over time Between Changes in Nasal IL-1β Concentration from Baseline and Changes in FEV1 % Predicted from Baseline during Asthma Exacerbation [ Time Frame: Baseline and up to 5 days from the time asthma exacerbation is diagnosed ]Assess the relationship over time between the asthma exacerbation-induced change in NELF IL-1β concentrations and the asthma exacerbation-induced change in FEV1% predicted. The correlation will be calculated for each of the 5 days of the exacerbation to determine the degree of change over time.
Biospecimen Retention: Samples Without DNA

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Ages Eligible for Study: | 12 Years to 21 Years (Child, Adult) |
Sexes Eligible for Study: | All |
Sampling Method: | Non-Probability Sample |
Inclusion Criteria:
- Ages 12 to 21 years, inclusive, of both genders
- Physician diagnosis of persistent asthma or symptoms consistent with persistent asthma based on expert guidelines for diagnosis and management of asthma (1).
- Current use of a controller therapy such as an inhaled corticosteroid (ICS), ICS in combination with long-acting beta agonist (LABA), or leukotriene receptor antagonist (LTRA).
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Asthma is "not well controlled" (participant must have ≥1 of the following):
- Asthma Control Test (ACT) score <20,
- FEV1 <80% of predicted,
- Meets Global Initiative on Asthma (GINA) criteria for partly controlled or uncontrolled asthma (2):
In the past 4 weeks, has the patient had:
- Daytime symptoms >2x/week?
- Any night waking due to asthma?
- SABA reliever needed >2x/week?
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Any activity limitation due to asthma?
- [0 = Well controlled; 1-2 = Partly controlled; 3-4 = Uncontrolled]
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A history of at least one exacerbation requiring systemic corticosteroids (oral, IM or IV) in the past 24 months
- Access to a smartphone
- Wireless internet access in the participant's home
- Access to a standard freezer in the home
Exclusion Criteria:
- Systemic corticosteroid-dependent asthma (i.e. people who take oral steroids such as prednisone daily for asthma control). Use of other immunomodulator medications (such as biologics for asthma like omalizumab, etc) is allowable so long as the participant has been on a stable dose of the medication for at least 3 months.
- Participants whose asthma is sufficiently severe that the participants routinely require rescue albuterol multiple times a day for symptom relief (not including pre-exercise albuterol use).
- Pulmonary disease other than asthma that in the opinion of investigators may affect the interpretation of spirometry data, including but not limited to vocal cord dysfunction, restrictive lung disease, or cystic fibrosis.
- Inability to perform spirometry.
- History of spirometry-induced bronchoconstriction.
- Pregnancy or nursing a baby. Due to the effect of hormonal changes of pregnancy/lactation on airway inflammation, participants who are pregnant or nursing will be excluded from study.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04748055
Contact: Katie Mills | 919-966-2936 | katherine.mills@unc.edu |
United States, North Carolina | |
University of North Carolina - Chapel Hill | Recruiting |
Chapel Hill, North Carolina, United States, 27514 | |
Contact: Katie Mills | |
Contact: Paris Bennett |
Principal Investigator: | Allison Burbank, MD | University of North Carolina, Chapel Hill |
Responsible Party: | University of North Carolina, Chapel Hill |
ClinicalTrials.gov Identifier: | NCT04748055 |
Other Study ID Numbers: |
20-2452 R01HL135235 ( U.S. NIH Grant/Contract ) |
First Posted: | February 10, 2021 Key Record Dates |
Last Update Posted: | June 21, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | Deidentified individual data that supports the results will be shared beginning 9 to 36 months following publication provided the investigator who proposes to use the data has approval from an Institutional Review Board (IRB), Independent Ethics Committee (IEC), or Research Ethics Board (REB), as applicable, and executes a data use/sharing agreement with UNC. |
Time Frame: | 9 to 36 months following publication |
Access Criteria: | Approved IRB, IEC, or REB, as applicable, and an executed data use/sharing agreement with UNC. |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Asthma in children Asthma attack |
Asthma Bronchial Diseases Respiratory Tract Diseases Lung Diseases, Obstructive Lung Diseases |
Respiratory Hypersensitivity Hypersensitivity, Immediate Hypersensitivity Immune System Diseases |