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Treating Exacerbations of Asthma With Oral Montelukast in Children (TEAM)

Primary Purpose

Status Asthmaticus

Status
Not yet recruiting
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Montelukast Oral Granules
Albuterol
Corticosteroid
Sponsored by
Vanderbilt University Medical Center
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Status Asthmaticus

Eligibility Criteria

4 Years - 12 Years (Child)All SexesDoes not accept healthy volunteers

Inclusion Criteria: Child aged 4 - 12 years with doctor-diagnosed asthma Presents to the Vanderbilt Children's Hospital with an acute asthma exacerbation that is moderate or severe (AAIRS >7) after initial treatment with inhaled albuterol The parent agrees to phone and/or mail follow-up at 2-3 weeks for completion of SCARED and side-effect questionnaires. Exclusion Criteria: Gestational age < 34 weeks acute or chronic liver disease allergy to montelukast female with any evidence of Tanner stage 2 or greater breast development gastroesophageal reflux requiring acid-blocking medication history of anxiety disorder, depression and/or other neuropsychiatric disorder except ADHD positive on question 1 or 2 of the Columbia Suicide Severity Rating Scale (CSSR-S) score >25 on the 82-point Screen for Child Anxiety Related Disorders (SCARED) questionnaire Patients currently receiving daily montelukast (4 or 5 mg) will not be excluded from study participation.

Sites / Locations

  • Monroe Carell Jr. Children's Hospital at Vanderbilt

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

High-dose oral montelukast plus standard treatment

Identical placebo plus standard treatment

Arm Description

Escalating dose-levels of oral montelukast between 2 mg/kg and 3 mg/kg determined by pharmacokinetic-guided dose modeling, added to standard, guideline-based treatment (systemic corticosteroid, inhaled albuterol, and possible treatment adjuncts such as IV magnesium, determined by evidence-based asthma clinical practice guideline).

Guideline-based treatment (systemic corticosteroid, inhaled albuterol, and possible treatment adjuncts such as IV magnesium, determined by evidence-based asthma clinical practice guideline).

Outcomes

Primary Outcome Measures

Montelukast plasma level
Peak montelukast plasma level

Secondary Outcome Measures

Change of Acute Asthma Intensity Research Score
Change of the validated AAIRS, scored 0-16 points with 16 most severe and negative change indicating decreasing severity
Airway resistance by impulse oscillometry (IOS)
Change of IOS

Full Information

First Posted
March 24, 2023
Last Updated
August 19, 2023
Sponsor
Vanderbilt University Medical Center
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1. Study Identification

Unique Protocol Identification Number
NCT05819541
Brief Title
Treating Exacerbations of Asthma With Oral Montelukast in Children
Acronym
TEAM
Official Title
Dose Escalation Clinical Trial of High-dose Oral Montelukast to Inform Future RCT in Children With Acute Asthma Exacerbations
Study Type
Interventional

2. Study Status

Record Verification Date
August 2023
Overall Recruitment Status
Not yet recruiting
Study Start Date
November 1, 2023 (Anticipated)
Primary Completion Date
June 30, 2025 (Anticipated)
Study Completion Date
July 21, 2025 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Vanderbilt University Medical Center

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
Pediatric acute asthma exacerbations frequently do not respond to standard treatment of systemic corticosteroid and inhaled albuterol due to leukotriene-mediated airway inflammation that does not respond to these medications. Montelukast is a leukotriene inhibitor, and intravenous (IV) montelukast caused rapid improvements in adults with exacerbations, though the IV form is not available. The investigators' pilot pharmacokinetic (PK) study indicates that oral montelukast at a dose higher than currently used for preventing allergies achieves plasma levels similar to the IV preparation. This study will examine escalating mg/kg doses of montelukast to determine an optimal dose and will provide preliminary efficacy data to inform a future clinical trial sufficiently powered to determine efficacy in children with moderate and severe acute asthma exacerbations. Aim: Perform an adaptive, double-masked randomized controlled trial (RCT) of high-dose oral montelukast, with escalating mg/kg dose levels determined by PK-guided dose modeling, added to standard treatment versus standard treatment alone, in children with exacerbations that are moderate or severe after initial treatment with inhaled albuterol. Hypothesis 1: High-dose oral montelukast achieves peak plasma concentration (Cmax) >1,700 ng/ml in >86% of at least one of three sequential participant groups with escalating weight-based (milligram/kilogram or mg/kg) doses between groups. Hypothesis 2: Participants randomized to high-dose oral montelukast have a 2 point or greater improvement of the validated Acute Asthma Intensity Research Score (AAIRS) at 4 hours post-treatment in comparison with control group participants. Hypothesis 3: Among montelukast recipients, Cmax correlates with change of the AAIRS at 4 hours, after adjustment for pre-treatment exacerbation severity and systemic leukotriene stress measured using urinary leukotriene E4 (LTE4).
Detailed Description
Study design parameters Design: 2-arm, phase 3 double-blind RCT Intervention: Oral montelukast sprinkles or identical placebo Dose escalation: Doses between 2 mg/kg and 3 mg/kg based on pharmacokinetic modeling after each group of 5 participants. Hospitalization of children with acute asthma exacerbations is needed most often because some airway inflammatory pathways are incompletely responsive to bronchodilators (i.e., inhaled albuterol) and systemic corticosteroid (CCS),the only anti-inflammatory medication available for exacerbations since 1956. Cysteinyl leukotrienes (LTs) are an important cause of CCS and beta-agonist non-responsiveness. LTs are inflammatory mediators synthesized by airway mast cells and eosinophils. LT synthesis is induced by viral respiratory infection and aeroallergens, the most common asthma triggers in children. Though some inflammatory pathways induced by these triggers are CCS-responsive, LT-mediated airway inflammation is not CCS responsive. Moreover, LTs cause potent bronchoconstriction that is not entirely beta-agonist responsive. High-dose oral montelukast is a potential candidate to address this critical need. Montelukast is a potent LT-receptor antagonist and is FDA approved at a daily oral dose of 4-5 mg for chronic asthma and allergic rhinitis in children. It is also a potent bronchodilator. In randomized controlled trials (RCT) of adults with moderate and severe exacerbations and inadequate response to inhaled albuterol, intravenous (IV) montelukast caused rapid (within 10 minutes) and sustained improvement of lung function in all subjects, without selecting for CCS non-responsiveness. This underscores the potential clinical impact of reducing LT-mediated inflammation during exacerbations. However, the standard 5 mg oral dose does not achieve peak plasma levels (Cmax) comparable to the IV doses used in these RCTs, and IV montelukast is not available. The investigators' preliminary pharmacokinetic (PK) study in children with acute exacerbations demonstrated that 30 mg oral montelukast (mean 1.0 mg/kg) achieves Cmax >1,700 ng/ml in 40% of participants. This is a Cmax expected after doses used in the adult RCTs above. The investigators' study of data from 17,069 children with oral montelukast ingestions established the safety of single doses up to 445 mg or 18 mg/kg. The primary hypothesis for this research is that the investigators will identify a weight-based oral montelukast dose that reliably achieves Cmax >1,700 ng/ml by examining 3 escalating dose levels between 2 and 3 mg/kg. Dose escalation will be optimized using computerized, PK-guided dose modeling that will be updated after each group of 5 participants among 45 randomized to receive montelukast. The investigators further hypothesize that high-dose montelukast meaningfully decreases exacerbation severity, measured using the validated Acute Asthma Intensity Research Score (AAIRS). The Aim of this research is to perform an adaptive, double-masked RCT of high-dose oral montelukast, with escalating mg/kg dose levels between 2 mg/kg and 3 mg/kg determined by PK-guided dose modeling, added to standard treatment versus standard treatment alone, in children with exacerbations that are moderate or severe after initial treatment with inhaled albuterol. Hypothesis 1: At least one of the mg/kg doses will reliably achieve Cmax > 1,700 ng/ml. Hypotheses 2 is that there will be greater clinical improvement in participants randomized to high-dose oral MK. Hypothesis 2: Participants randomized to high-dose oral montelukast have a 2 point or greater improvement of the validated AAIRS at 4 hours post-treatment in comparison with control group participants. Hypothesis 3: Among montelukast recipients, Cmax predicts change of the AAIRS at 4 hours, after adjustment for pre-treatment exacerbation severity and systemic leukotriene stress measured using urinary LTE4. Participants will be randomized to receive montelukast sprinkles in cherry syrup or identical placebo. Montelukast (MK) dose will begin at 2 mg/kg. Peak MK plasma concentration (Cmax) will be measured after each group of 5 participants randomized to MK. MK dose for subsequent participant groups will be escalated if Cmax is <1,700 ng/ml for >14% of participants at current mg/kg dose level. INCLUSION CRITERIA Child aged 4 - 12 years with doctor-diagnosed asthma Presents to the Vanderbilt Children's Hospital (VCH) with an acute asthma exacerbation that is moderate or severe (AAIRS >= 7) after initial treatment with inhaled albuterol o Per emergency department (ED) protocol, patients with AAIRS >= 7 have an IV catheter placed, enabling blood draws. The parent agrees to phone and/or mail follow-up at 2-3 weeks for completion of Screen for Anxiety Related Disorders (SCARED) and side-effect questionnaires. EXCLUSION CRITERIA Any of the following preclude enrollment of a child for this protocol: Gestational age < 34 weeks acute or chronic liver disease allergy to montelukast female with any evidence of Tanner stage 2 or greater breast development gastroesophageal reflux requiring acid-blocking medication history of anxiety disorder, depression and/or other neuropsychiatric disorder except attention-deficit/hyperactivity disorder (ADHD) positive on question 1 or 2 of the Columbia Suicide Severity Rating Scale (CSSR-S) score >25 on the 82-point Screen for Child Anxiety Related Disorders (SCARED) questionnaire Patients currently receiving daily montelukast (4 or 5 mg) will not be excluded from study participation. Blood sampling, scoring the Acute Asthma Intensity Research Score(AAIRS), and measurement of airway resistance by impulse oscillometry (IOS, below) will be performed before (time 0) and at approximately 2, 3, 4, 6, 12-18, and 18- 24 hours after drug administration, if the participant is available. Reasons for non-availability include but are not limited to discharge from ED or hospital and participant sleeping, performing another procedure, eating, or being rounded upon by the clinical team. If a participant is to be discharged from the hospital before the final time point, the investigators will attempt to perform the above studies immediately prior to discharge. The Primary Aim is to identify an optimal mg/kg dose of oral montelukast that will reliably achieve Cmax (1,700 ng/ml), a plasma level that has been shown to substantially improve forced expiratory volume in 1-second (FEV1) in persons with moderate and severe acute asthma exacerbations. To achieve this aim the investigators will use an adaptive, double-masked RCT of high-dose oral montelukast, with 3 escalating dose-levels between 2 mg/kg and 3 mg/kg, determined by PK-guided dose modeling. With the variability of plasma levels at each mg/kg dose in mind, the investigators will use plasma level distribution as the primary statistical measure for this aim. Plasma montelukast assays will be performed after each Group of 5 participants are randomized to receive MK, with a Futility Criterion determining whether subsequent Groups at a Dose Level will be enrolled at that Dose Level or moved to the next one. Interim analyses will be conducted after each Dose Level has been studied. Testing Hypothesis 1: The investigators are primarily interested in estimating the change in plasma concentrations of montelukast over time and will report summary statistics at each time point numerically and graphically. They will also summarize the longitudinal measurements by the Cmax, the proportion of subjects achieving a Cmax of at least 1,700 ng/ml, the time (Tmax) to reaching Cmax, and the time to reaching 1,700 ng/ml (T1700). While the investigators anticipate being able to monitor all subjects for 24 hours, the primary analysis will consider subjects who have at least 4 hours of blood draws to allow minimally sufficient time to achieve Cmax. Power calculation for Hypothesis 1: This research is powered for to test hypothesis 1 and may not be sufficiently powered to test hypotheses 2 and 3. PK studies of oral montelukast at daily doses (4 - 5 mg) used for control of childhood asthma and allergic rhinitis included 12-32 participants. Investigators established sample size for these studies without formal power and sample-size calculations. With these considerations in mind, and in collaboration with the FDA, the sample size for this research has been set at 45 for each arm of this RCT. For this power calculation the investigators consider the probability of successfully finding a dose at which at least 86% of Dose level participants achieve a Cmax >1,700 ng/ml. The first consideration is the scenario in which at least 13 of the 15 (86.7%) group participants successfully achieves a Cmax >= 1,700 ng/ml. The probability of successfully identifying this dose will depend on p, the true probability a dose will lead to a Cmax above 1,700 ng/ml. If p=0.90, there is 82% power that the investigators will observe 13 or more successes in 15 subjects; if p=0.95, there is a 96% power that the investigators will observe 13 or more successes. These calculations are based on a one-tailed cumulative binomial distribution function with N=15, but there is the possibility of carryover leading to a Dose Level N of 20, 25, or 30. For N=25 and p=.9, there is a 76% power that the investigators will observe 22 or more successes; if p=0.95, there is 97% probability of observing 22 or more successes. Second, consider the scenario of an inadequate dose that needs to be escalated. In this scenario, the investigators would escalate to the next dose when more than 2 subjects have a Cmax below 1,700 ng/ml after enrolling 5, 10, or 15 subjects. If a given dose is only 50% effective (p=0.5) in achieving a Cmax above 1,700 ng/ml, then there is a 50%, 94%, or 99.6% probability of escalating after 5, 10, or 15 subjects, respectively. Testing Hypothesis 2: The Acute Asthma Intensity Research Score (AAIRS) is a 0 - 16 point (16 most severe) bedside severity score that incorporates multiple domains of exacerbation severity and predicts %-predicted FEV1 across all levels of severity. Additionally, an AAIRS <3 predicts safe discharge from the ED. The AAIRS is an optimal surrogate of need-for hospitalization and an outcome measure for this research that the investigators can accurately measure before and at precise time points after active drug or placebo dosing. Descriptive analysis of key demographic and clinical variables by randomization group will be performed to evaluate randomization. The primary analysis will be linear regression of change of the AAIRS severity score 4-hours post dosing (outcome) with an indicator for treatment group as the predictor of interest and controlling for baseline (pre-treatment) AAIRS and urinary leukotriene E4 concentration (a measure of systemic leukotriene stress). This model will allow the investigators to estimate the mean difference in the change in AAIRS score, treatment versus control, with corresponding 95% confidence intervals. Controlling for baseline severity using the pre-treatment AAIRS will improve the precision of the estimated treatment effect. Secondary analyses will replace the binary indicator of treatment group with the dose of montelukast received. If the investigators find that the assumptions of the linear model are not appropriate, they will use the proportional odds ordinal regression model with the same outcome and predictors. The proportional odds model generalizes the Wilcoxon rank sum test to a regression setting to estimate an odds ratio corresponding to a treatment effect. Power and sample size considerations are based on a fixed sample size of 45 treatment and 45 control subjects. In prior studies, the investigators found that the standard deviation of the change in AAIRS score after 4 hours of treatment was 2.97 points. If the true difference in the change in AAIRS score between treatment and control groups is 2 points, there will be 89% power to detect a difference between groups. The test will use a two-sided significance level of 0.05. Testing Hypothesis 3: Initial descriptive analysis will include summary statistics and bivariate correlations of 4-hour change of the AAIRS as outcome with Cmax, pre-treatment exacerbation severity, and urinary LTE4 concentration. Bivariate associations will be flexibly fit using loess smooth lines and Spearman's rank correlation. Hypothesis 3 will be tested in a multivariable linear regression model using change of the AAIRS severity score as the outcome with Cmax, pre-treatment AAIRS, and urinary leukotriene 4 concentration as predictors. Regression splines will be included as needed to allow for non-linear associations between predictors and the outcome as needed. As with hypothesis 2, if it is found that the assumptions of the linear model are not appropriate, the investigators will use the proportional odds ordinal regression model with the same outcome and predictors. Power and sample size considerations are based on the 45 montelukast recipients. For bivariate correlations, there will be 80% power to detect correlations of 0.40 or greater (R-square of 0.16). For the multivariable model calculation, if it is assumed that exacerbation severity and leukotriene stress explain 20% of the variability in AAIRS severity score, then there will be 80% power to detect if Cmax explains an additional 12% of the variability in AAIRS severity score (improvement in R-square of 0.12). If exacerbation severity and leukotriene stress only explain 10% of the variability in AAIRS severity score, then there will be 80% power to detect if Cmax explains an additional 14% of the variability in AAIRS severity score (improvement in R2 of 0.14). Calculations are based on a two-sided significance level of 0.05.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Status Asthmaticus

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Sequential Assignment
Model Description
The aim is to perform an adaptive, double-masked, 2-arm RCT of high-dose oral montelukast, with 3 sequential, escalating dose-levels determined by PK-guided dose modeling, added to standard treatment versus standard treatment alone, in children with asthma exacerbations that are moderate or severe after initial treatment with inhaled albuterol.
Masking
ParticipantCare ProviderInvestigatorOutcomes Assessor
Masking Description
We will use randomly-permuted 1:1 blocks of 10 to minimize seasonal bias of exacerbation precipitants that may have independent associations with treatment-response. The study biostatistician will use the randomizeR package in R statistical software to provide the randomization schedule. A Research Electronic Data Capture (REDCap) database will be built that will incorporate the randomization sequence. When the investigators place an electronic medical record order (eStar) order for drug, the randomization database will designate randomized treatment allocation to the pharmacy. Pharmacy will prepare appropriate drug. The REDCap database will email and text the study pharmacist performing plasma assays, pharmacy staff, and the investigators 24 hours after the 5th participant is randomized to MK within each dose group. This will alert the investigators to pause enrollment until MK assays are completed and the mg/kg MK dose is determined for the next dose group.
Allocation
Randomized
Enrollment
90 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
High-dose oral montelukast plus standard treatment
Arm Type
Experimental
Arm Description
Escalating dose-levels of oral montelukast between 2 mg/kg and 3 mg/kg determined by pharmacokinetic-guided dose modeling, added to standard, guideline-based treatment (systemic corticosteroid, inhaled albuterol, and possible treatment adjuncts such as IV magnesium, determined by evidence-based asthma clinical practice guideline).
Arm Title
Identical placebo plus standard treatment
Arm Type
Placebo Comparator
Arm Description
Guideline-based treatment (systemic corticosteroid, inhaled albuterol, and possible treatment adjuncts such as IV magnesium, determined by evidence-based asthma clinical practice guideline).
Intervention Type
Drug
Intervention Name(s)
Montelukast Oral Granules
Other Intervention Name(s)
Singulair
Intervention Description
Oral montelukast granules, USP powder, or crushed tablets at weight-based doses between 2 mg/kg and 3 mg/kg to a maximum of 180 mg.
Intervention Type
Drug
Intervention Name(s)
Albuterol
Other Intervention Name(s)
Inhaled albuterol
Intervention Description
Inhaled albuterol by metered-dose inhaler (MDI) or nebulizer
Intervention Type
Drug
Intervention Name(s)
Corticosteroid
Other Intervention Name(s)
Systemic corticosteroid
Intervention Description
Oral or parenteral corticosteroid (e.g., dexamethasone, methylprednisolone)
Primary Outcome Measure Information:
Title
Montelukast plasma level
Description
Peak montelukast plasma level
Time Frame
4 hours
Secondary Outcome Measure Information:
Title
Change of Acute Asthma Intensity Research Score
Description
Change of the validated AAIRS, scored 0-16 points with 16 most severe and negative change indicating decreasing severity
Time Frame
4 hours
Title
Airway resistance by impulse oscillometry (IOS)
Description
Change of IOS
Time Frame
4 hours

10. Eligibility

Sex
All
Minimum Age & Unit of Time
4 Years
Maximum Age & Unit of Time
12 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Child aged 4 - 12 years with doctor-diagnosed asthma Presents to the Vanderbilt Children's Hospital with an acute asthma exacerbation that is moderate or severe (AAIRS >7) after initial treatment with inhaled albuterol The parent agrees to phone and/or mail follow-up at 2-3 weeks for completion of SCARED and side-effect questionnaires. Exclusion Criteria: Gestational age < 34 weeks acute or chronic liver disease allergy to montelukast female with any evidence of Tanner stage 2 or greater breast development gastroesophageal reflux requiring acid-blocking medication history of anxiety disorder, depression and/or other neuropsychiatric disorder except ADHD positive on question 1 or 2 of the Columbia Suicide Severity Rating Scale (CSSR-S) score >25 on the 82-point Screen for Child Anxiety Related Disorders (SCARED) questionnaire Patients currently receiving daily montelukast (4 or 5 mg) will not be excluded from study participation.
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Donald H Arnold, MD, MPH
Phone
16155790516
Email
don.arnold@vumc.org
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Donald H Arnold, MD, MPH
Organizational Affiliation
Vanderbilt University School of Medicine
Official's Role
Principal Investigator
Facility Information:
Facility Name
Monroe Carell Jr. Children's Hospital at Vanderbilt
City
Nashville
State/Province
Tennessee
ZIP/Postal Code
37232-9001
Country
United States
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Donald H Arnold, MD, MPH
Phone
615-579-0516
Email
don.arnold@vumc.org

12. IPD Sharing Statement

Plan to Share IPD
No
IPD Sharing Plan Description
Will follow NIH Data Sharing
Citations:
PubMed Identifier
28639856
Citation
Arnold DH, Bowman N, Reiss TF, Hartert TV, Seger DL. Adverse events are rare after single-dose montelukast exposures in children. Clin Toxicol (Phila). 2018 Jan;56(1):25-29. doi: 10.1080/15563650.2017.1337123. Epub 2017 Jun 22.
Results Reference
result
PubMed Identifier
31056949
Citation
Arnold DH, Bowman N, Reiss TF, Hartert TV, Akers WS, Seger DL. Adverse events associated with weight-based, high-dose montelukast exposures in children. Clin Toxicol (Phila). 2020 Feb;58(2):145-146. doi: 10.1080/15563650.2019.1609686. Epub 2019 May 6. No abstract available. Erratum In: Clin Toxicol (Phila). 2020 Feb;58(2):e1.
Results Reference
result
PubMed Identifier
32960980
Citation
Arnold DH, Van Driest SL, Reiss TF, King JC, Akers WS. Pilot Study of Peak Plasma Concentration After High-Dose Oral Montelukast in Children With Acute Asthma Exacerbations. J Clin Pharmacol. 2021 Mar;61(3):360-367. doi: 10.1002/jcph.1738. Epub 2020 Sep 22.
Results Reference
result

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Treating Exacerbations of Asthma With Oral Montelukast in Children

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