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Safety and Efficacy Study to Determine Anti-Asthmatic Effect of Esomeprazole Magnesium; Nexium Reflux Asthma

A 6-month Randomized, Double-blind, Parallel-group, Multicentre, Placebo-controlled Phase II Study to Compare Anti-asthmatic Effect and Safety of Esomeprazole (Nexium®) 40 mg Twice Daily or 40 mg Once Daily With Placebo in Adults With Asthma

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00317044
Acronym
RELAX
Enrollment
961
Registered
2006-04-24
Start date
2006-04-30
Completion date
2008-07-31
Last updated
2014-06-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Asthma, GERD

Keywords

Moderate to severe Asthma, Gastroesophageal Reflux Disease, esomeprazole, GERD

Brief summary

The purpose of this study is to determine whether treatment with esomeprazole for 6 months will improve asthma in adult patients with moderate to severe asthma and symptoms of gastroesophageal reflux disease.

Interventions

DRUGEsomeprazole

Esomeprazole 40 mg twice daily

DRUGPlacebo

Placebo twice daily

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Adults with diagnosis of asthma since at least 6 months. * Symptoms of asthma during run-in. * At least 3 months history and present symptoms of 1 or more of the following: burning feeling behind breastbone, pain behind breastbone, acid taste in the mouth.

Exclusion criteria

* Patients with clinically relevant abnormalities. * Patients with a smoking history of ≥10 pack-year. * Patients who have had previous surgery on the esophagus or the stomach.

Design outcomes

Primary

MeasureTime frameDescription
Mean Change in Morning Peak Expiratory Flow (mPEF (L/Minute)) From Baseline (Mean of the Last 7 Days in the run-in Period) to Treatment Period (Mean of All Available Data During the Treatment Period).Baseline to 6 monthsPeak expiratory flow is defined as the maximum speed of expiration as measured with the Mini-Wright® PEF Meter. Participants must have both baseline and follow up measure to be included in analysis. Results presented as a mean of all available data during the treatment period.

Secondary

MeasureTime frameDescription
Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - TotalBaseline to 6 monthsParticipants must have both baseline and flow up measure to be included in analysis. Each morning and evening, the patient will be asked to record his/her asthma symptoms (sx) in the diary. The asthma sx scores during night- and daytime will be assessed by the patient according to the following scoring system: 0 = no asthma sx; 1 = you are aware of your asthma sx but can easily tolerate the sx; 2 = your asthma sx are causing you enough discomfort to cause problems with normal activities (or with sleep); 3 = you are unable to do your normal activities (or sleep) because of your asthma. The total symptom score is the sum of the night- and daytime scores.
Changes in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Total From Baseline to 6 MonthsBaseline to 6 monthsThis is the change in the average number of inhalations from baseline to the end of the study (6 months). Participants must have both baseline and follow up measure to be included in analysis. Treatment mean calculated using the entire treatment period.
Changes in Average Value From Baseline to Treatment Period in Percentage of Nights With Awakening(s) Due to AsthmaBaseline to 6 monthsChange in percentage of nights with night-time awakening(s) due to asthma from baseline to the end of the study (6 months). Participants must have both baseline and follow up measure to be included in analysis.
Change in Forced Expiratory Volume in 1 Second (FEV1) From Randomization to Treatment Period.From randomization (Visit 3) to visit 7.Description: Changes in forced expiratory volume in 1 second (FEV1) from randomization (Visit 3) to the treatment period considered as mean value at Visits 4-7. Participants must have both baseline and follow up measure to be included in analysis.
Number of Patients With Severe Asthma Exacerbations.Up to 6 months
Changes in Average Value From Baseline to Treatment Period in Evening Peak Expiratory Flow (ePEF (L/Minute))Baseline to 6 monthsPeak expiratory flow is defined as the maximum speed of expiration as measured with the Mini-Wright® PEF Meter. Participants must have both baseline and follow up measure to be included in analysis. No dispersion measure available.
Change in Symptoms of GERD as Measured by Reflux Disease Questionnaire (RDQ) From Randomization (Visit 3) to Visit 7Randomization (Visit 3) to Visit 7The RDQ questionnaire is used to assess six GI symptoms during the previous week (a burning feeling behind the breastbone, pain behind the breastbone, a burning feeling in the centre of the stomach, pain in the centre of the stomach, an acid taste in the mouth, unpleasant movement of material upwards from the stomach). Each symptom is given a frequency score on a six-point scale (from 0=did not have to 5=daily) and an intensity score on a six-point scale (from 0=did not have to 5=severe). Three domain scores are calculated by forming averages of the frequency and intensity scores of selected symptoms (heartburn: the first two symptoms; dyspepsia: the next two symptoms; regurgitation: the last two symptoms). The overall GERD score is calculated as the average of the hearburn and dyspepsia domain scores. The GERD score can thus range from 0 to 5.
Number of Severe Adverse EventsUp to 6 months
Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - NightBaseline to 6 monthsParticipants must have both baseline and follow up measure to be included in analysis
Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - DayBaseline to 6 monthsParticipants must have both baseline and follow up measure to be included in analysis
Changes in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - NightBaseline to 6 monthsParticipants must have both baseline and follow up measure to be included in analysis
Change in Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S)) Scores From Randomization (Visit 3) to Visit 7From randomization (Visit 3) to Visit 7The Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S))has been developed by and includes 32 questions in 4 domains: activity limitation, symptoms, emotional function, and exposure to environmental stimuli. It is used to measure the physical and emotional impact of the disease in the selected areas of life. Participants must have both baseline and follow up measure to be included in analysis.AQLQ(S) score based on a 7-point scale that ranged from 1 (worst quality of life) to 7 (best quality of life).

Countries

Argentina, Bulgaria, Canada, Czechia, France, Germany, Hungary, Italy, Mexico, Poland, Portugal, Slovakia, Switzerland, United States

Participant flow

Pre-assignment details

Four randomized patients were excluded from the ITT analysis due to missing efficacy data (2 patients), no investigational product given (1 patient), and being unblinded by the investigator (1 patient). The patient who received no investigational product was excluded from the safety analysis and is not included in the Baseline Characteristics.

Participants by arm

ArmCount
Esomeprazole 40 mg Twice Daily
Nexium 40 mg given as esomeprazole magnesium trihydrate capsules twice daily
319
Esomeprazole 40 mg Once Daily
Nexium 40 mg given as esomeprazole magnesium trihydrate capsules once daily
313
Placebo
Placebo
328
Total960

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event474
Overall StudyLost to Follow-up023
Overall StudyMultiple Reasons626
Overall StudyProtocol Violation282220
Overall StudyWithdrawal by Subject10712

Baseline characteristics

CharacteristicEsomeprazole 40 mg Twice DailyEsomeprazole 40 mg Once DailyPlaceboTotal
Age, Continuous44.0 Years45.0 Years45.0 Years44.667 Years
Sex: Female, Male
Female
240.00 Participants240.00 Participants247.00 Participants727 Participants
Sex: Female, Male
Male
79.00 Participants73.00 Participants81.00 Participants233 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
37 / 31944 / 31355 / 328
serious
Total, serious adverse events
7 / 3195 / 3135 / 328

Outcome results

Primary

Mean Change in Morning Peak Expiratory Flow (mPEF (L/Minute)) From Baseline (Mean of the Last 7 Days in the run-in Period) to Treatment Period (Mean of All Available Data During the Treatment Period).

Peak expiratory flow is defined as the maximum speed of expiration as measured with the Mini-Wright® PEF Meter. Participants must have both baseline and follow up measure to be included in analysis. Results presented as a mean of all available data during the treatment period.

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyMean Change in Morning Peak Expiratory Flow (mPEF (L/Minute)) From Baseline (Mean of the Last 7 Days in the run-in Period) to Treatment Period (Mean of All Available Data During the Treatment Period).21.1891 L/minuteStandard Error 2.8689
Esomeprazole 40 mg Once DailyMean Change in Morning Peak Expiratory Flow (mPEF (L/Minute)) From Baseline (Mean of the Last 7 Days in the run-in Period) to Treatment Period (Mean of All Available Data During the Treatment Period).19.1847 L/minuteStandard Error 2.8422
PlaceboMean Change in Morning Peak Expiratory Flow (mPEF (L/Minute)) From Baseline (Mean of the Last 7 Days in the run-in Period) to Treatment Period (Mean of All Available Data During the Treatment Period).15.6771 L/minuteStandard Error 2.8086
Secondary

Change in Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S)) Scores From Randomization (Visit 3) to Visit 7

The Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S))has been developed by and includes 32 questions in 4 domains: activity limitation, symptoms, emotional function, and exposure to environmental stimuli. It is used to measure the physical and emotional impact of the disease in the selected areas of life. Participants must have both baseline and follow up measure to be included in analysis.AQLQ(S) score based on a 7-point scale that ranged from 1 (worst quality of life) to 7 (best quality of life).

Time frame: From randomization (Visit 3) to Visit 7

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChange in Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S)) Scores From Randomization (Visit 3) to Visit 70.97 Scores on a scaleStandard Error 0.07
Esomeprazole 40 mg Once DailyChange in Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S)) Scores From Randomization (Visit 3) to Visit 70.83 Scores on a scaleStandard Error 0.07
PlaceboChange in Asthma Quality of Life Questionnaire, Standardized Version (AQLQ(S)) Scores From Randomization (Visit 3) to Visit 70.55 Scores on a scaleStandard Error 0.07
Secondary

Change in Forced Expiratory Volume in 1 Second (FEV1) From Randomization to Treatment Period.

Description: Changes in forced expiratory volume in 1 second (FEV1) from randomization (Visit 3) to the treatment period considered as mean value at Visits 4-7. Participants must have both baseline and follow up measure to be included in analysis.

Time frame: From randomization (Visit 3) to visit 7.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChange in Forced Expiratory Volume in 1 Second (FEV1) From Randomization to Treatment Period.0.09 LitersStandard Error 0.02
Esomeprazole 40 mg Once DailyChange in Forced Expiratory Volume in 1 Second (FEV1) From Randomization to Treatment Period.0.07 LitersStandard Error 0.02
PlaceboChange in Forced Expiratory Volume in 1 Second (FEV1) From Randomization to Treatment Period.0.02 LitersStandard Error 0.02
Secondary

Change in Symptoms of GERD as Measured by Reflux Disease Questionnaire (RDQ) From Randomization (Visit 3) to Visit 7

The RDQ questionnaire is used to assess six GI symptoms during the previous week (a burning feeling behind the breastbone, pain behind the breastbone, a burning feeling in the centre of the stomach, pain in the centre of the stomach, an acid taste in the mouth, unpleasant movement of material upwards from the stomach). Each symptom is given a frequency score on a six-point scale (from 0=did not have to 5=daily) and an intensity score on a six-point scale (from 0=did not have to 5=severe). Three domain scores are calculated by forming averages of the frequency and intensity scores of selected symptoms (heartburn: the first two symptoms; dyspepsia: the next two symptoms; regurgitation: the last two symptoms). The overall GERD score is calculated as the average of the hearburn and dyspepsia domain scores. The GERD score can thus range from 0 to 5.

Time frame: Randomization (Visit 3) to Visit 7

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChange in Symptoms of GERD as Measured by Reflux Disease Questionnaire (RDQ) From Randomization (Visit 3) to Visit 7-1.95 Scores on a scaleStandard Error 0.07
Esomeprazole 40 mg Once DailyChange in Symptoms of GERD as Measured by Reflux Disease Questionnaire (RDQ) From Randomization (Visit 3) to Visit 7-1.91 Scores on a scaleStandard Error 0.07
PlaceboChange in Symptoms of GERD as Measured by Reflux Disease Questionnaire (RDQ) From Randomization (Visit 3) to Visit 7-1.27 Scores on a scaleStandard Error 0.07
Secondary

Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Day

Participants must have both baseline and follow up measure to be included in analysis

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Day-0.30 Scores on a scaleStandard Error 0.03
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Day-0.25 Scores on a scaleStandard Error 0.03
PlaceboChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Day-0.25 Scores on a scaleStandard Error 0.03
Secondary

Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Night

Participants must have both baseline and follow up measure to be included in analysis

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Night-0.31 Scores on a scaleStandard Error 0.03
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Night-0.23 Scores on a scaleStandard Error 0.03
PlaceboChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Night-0.27 Scores on a scaleStandard Error 0.03
Secondary

Changes in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Total

Participants must have both baseline and flow up measure to be included in analysis. Each morning and evening, the patient will be asked to record his/her asthma symptoms (sx) in the diary. The asthma sx scores during night- and daytime will be assessed by the patient according to the following scoring system: 0 = no asthma sx; 1 = you are aware of your asthma sx but can easily tolerate the sx; 2 = your asthma sx are causing you enough discomfort to cause problems with normal activities (or with sleep); 3 = you are unable to do your normal activities (or sleep) because of your asthma. The total symptom score is the sum of the night- and daytime scores.

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Total-0.61 Scores on a scaleStandard Error 0.05721
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Total-0.47 Scores on a scaleStandard Error 0.05652
PlaceboChanges in Average Value From Baseline to Treatment Period in Asthma Symptom Score - Total-0.52 Scores on a scaleStandard Error 0.05609
Secondary

Changes in Average Value From Baseline to Treatment Period in Evening Peak Expiratory Flow (ePEF (L/Minute))

Peak expiratory flow is defined as the maximum speed of expiration as measured with the Mini-Wright® PEF Meter. Participants must have both baseline and follow up measure to be included in analysis. No dispersion measure available.

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Evening Peak Expiratory Flow (ePEF (L/Minute))21.88 L/minuteStandard Error 2.89
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Evening Peak Expiratory Flow (ePEF (L/Minute))18.37 L/minuteStandard Error 2.87
PlaceboChanges in Average Value From Baseline to Treatment Period in Evening Peak Expiratory Flow (ePEF (L/Minute))18.55 L/minuteStandard Error 2.83
Secondary

Changes in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Night

Participants must have both baseline and follow up measure to be included in analysis

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Night-0.30 InhalationsStandard Error 0.05
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Night-0.27 InhalationsStandard Error 0.05
PlaceboChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Night-0.29 InhalationsStandard Error 0.04
Secondary

Changes in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Total From Baseline to 6 Months

This is the change in the average number of inhalations from baseline to the end of the study (6 months). Participants must have both baseline and follow up measure to be included in analysis. Treatment mean calculated using the entire treatment period.

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Total From Baseline to 6 Months-0.77 InhalationsStandard Error 0.1
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Total From Baseline to 6 Months-0.73 InhalationsStandard Error 0.1
PlaceboChanges in Average Value From Baseline to Treatment Period in Number of Inhalations of Short-acting β2-agonists (SABAs) - Total From Baseline to 6 Months-0.68 InhalationsStandard Error 0.1
Secondary

Changes in Average Value From Baseline to Treatment Period in Percentage of Nights With Awakening(s) Due to Asthma

Change in percentage of nights with night-time awakening(s) due to asthma from baseline to the end of the study (6 months). Participants must have both baseline and follow up measure to be included in analysis.

Time frame: Baseline to 6 months

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Esomeprazole 40 mg Twice DailyChanges in Average Value From Baseline to Treatment Period in Percentage of Nights With Awakening(s) Due to Asthma-0.238 Percent of nightsStandard Error 0.018
Esomeprazole 40 mg Once DailyChanges in Average Value From Baseline to Treatment Period in Percentage of Nights With Awakening(s) Due to Asthma-0.219 Percent of nightsStandard Error 0.018
PlaceboChanges in Average Value From Baseline to Treatment Period in Percentage of Nights With Awakening(s) Due to Asthma-0.223 Percent of nightsStandard Error 0.018
Secondary

Number of Patients With Severe Asthma Exacerbations.

Time frame: Up to 6 months

ArmMeasureValue (NUMBER)
Esomeprazole 40 mg Twice DailyNumber of Patients With Severe Asthma Exacerbations.33 Participants
Esomeprazole 40 mg Once DailyNumber of Patients With Severe Asthma Exacerbations.41 Participants
PlaceboNumber of Patients With Severe Asthma Exacerbations.43 Participants
Secondary

Number of Severe Adverse Events

Time frame: Up to 6 months

ArmMeasureValue (NUMBER)
Esomeprazole 40 mg Twice DailyNumber of Severe Adverse Events4 Events
Esomeprazole 40 mg Once DailyNumber of Severe Adverse Events5 Events
PlaceboNumber of Severe Adverse Events9 Events

Source: ClinicalTrials.gov · Data processed: Apr 1, 2026