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Study of Esomeprazole 20 mg or 40 mg vs Placebo Effectiveness on the Occurrence of Peptic Ulcers in Subjects on Low Dose Acetylsalicylic Acid (LDA)

A Randomized, Double-blind, Parallel-group, Multicentre, Phase III Study to Assess the Effect of Esomeprazole 20 or 40 mg od Versus Placebo on the Occurrence of Peptic Ulcers During 26 Weeks in Subjects on Continuous Low Dose Acetylsalicylic Acid (ASA)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00441727
Acronym
Oberon
Enrollment
2426
Registered
2007-03-01
Start date
2007-02-28
Completion date
2008-08-31
Last updated
2012-07-16

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

Conditions

Gastric Ulcer, Duodenal Ulcer

Keywords

Peptic ulcer, low-dose ASA

Brief summary

The purpose of this study is to compare the effect of esomeprazole 20 or 40 mg once daily versus placebo on the occurrence of peptic ulcers during 26 weeks in subjects on continuous low-dose acetylsalicylic acid.

Interventions

Esomeprazole 40 mg once daily

Esomeprazole 20 mg once daily

DRUGPlacebo

Placebo once daily

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

* Daily intake of low-dose Aspirin (ASA) - The subject must fulfill at least one of the following (a-e): * Aged ≥65 years. * Aged ≥18 years and with a documented history of uncomplicated peptic ulcer(s). * Aged ≥60 years and naïve to low-dose ASA (ie, treatment started within 1 month prior to randomization). * Aged ≥60 years and with stable coronary artery disease. * Aged ≥60 years and with complaints of upper gastrointestinal (GI) symptoms that, as judged by the investigator, requires an Esophagogastroduodenoscopy (EGD) and with the finding of ≥5 gastric and/or duodenal erosions at the baseline endoscopy.

Exclusion criteria

* Peptic ulcer(s) at baseline esophagogastroduodenoscopy (EGD). * Reflux esophagitis Los Angeles (LA) classification grade C or D at baseline * History of peptic ulcer complications such as clinically significant bleeding and/or perforation.

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Who Experienced the Occurence of Peptic Ulcer(s).During 26 weeksThe occurrence of ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Secondary

MeasureTime frameDescription
Percentage of Participants Who Experienced the Occurence of Gastric Ulcer.During 26 weeksThe occurrence of gastric ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.
Percentage of Participants Who Experienced the Occurrence of Duodenal Ulcer.During 26 weeksThe occurrence of duodenal ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.
Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Dyspepsia Dimension During the 26-week Visit or the Week Prior to the Last Visit.RDQ was assessed at baseline, 8 weeks, 16 week, 26 weeks or upon withdrawal.RDQ contains 12 items on a 6-point Likert scale. Six items concern the frequence ('Did not have' to 'Daily') and six items concern the severity ('Did not have' to 'Severe'). The dyspepsia dimension contains the items 'Burning feeling in the center of the upper stomach' and 'Pain in the center of the upper stomach'. Best score possible 0, worst score possible - daily occurrence.
Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Gastroesophageal Reflux Disease Dimension During the 26-week Visit or the Week Prior to the Last Visit.RDQ was assessed at baseline, 8 weeks, 16 week, 26 weeks or upon withdrawal.RDQ contains 12 items on a 6-point Likert scale. Six items concern the frequency ('Did not have' to 'Daily') and six items concern the severity ('Did not have' to 'Severe'). Gastroesophageal reflux disease (GERD) items: 'Acid taste in the mouth', 'Unpleasant movement of materials upward from the stomach', 'Burning feeling behind the breastbone' and 'Pain behind the breastbone'. Best score possible 0, worst score possible - daily occurrence.
Number of Participants With Gastric and/or Duodenal Erosions.The number of erosions was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Countries

Argentina, Australia, Bulgaria, Canada, Czechia, Finland, Germany, Indonesia, Mexico, Norway, Philippines, Poland, Portugal, Romania, Russia, Slovakia, South Africa, South Korea, Thailand, United States

Participant flow

Recruitment details

The first subject was randomized 22 February 2007 and last subject completed 28 August 2008. Cardiologists, primary care physicians and gastroenterologists were the primary target investigators.

Participants by arm

ArmCount
Esomeprazole 40
Esomeprazole 40 mg every day for 26 weeks in subjects on continuous low-dose ASA (acetylsalicyclic acid) (75-325 mg)
817
Esomeproazole 20
Esomeprazole 20 mg every day for 26 weeks in subjects on continuous low dose ASA (75-325 mg)
804
Placebo
Placebo every day for 26 weeks in subjects on continuous low-dose ASA (75-325 mg)
805
Total2,426

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event263328
Overall StudyLack of Efficacy7848
Overall StudyLost to Follow-up565
Overall StudyProtocol Violation192832
Overall StudySafety Reasons313
Overall StudyVarious reason specified685
Overall StudyWithdrawal by Subject403447

Baseline characteristics

CharacteristicEsomeprazole 40Esomeproazole 20PlaceboTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
577 Participants558 Participants545 Participants1680 Participants
Age, Categorical
Between 18 and 65 years
240 Participants246 Participants260 Participants746 Participants
Sex: Female, Male
Female
380 Participants375 Participants402 Participants1157 Participants
Sex: Female, Male
Male
437 Participants429 Participants403 Participants1269 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
32 / —42 / —31 / —
serious
Total, serious adverse events
46 / —40 / —35 / —

Outcome results

Primary

Percentage of Participants Who Experienced the Occurence of Peptic Ulcer(s).

The occurrence of ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Time frame: During 26 weeks

ArmMeasureValue (NUMBER)
Esomeprazole 40Percentage of Participants Who Experienced the Occurence of Peptic Ulcer(s).1.35 percentage of participants
Esomeproazole 20Percentage of Participants Who Experienced the Occurence of Peptic Ulcer(s).1 percentage of participants
PlaceboPercentage of Participants Who Experienced the Occurence of Peptic Ulcer(s).6.58 percentage of participants
Secondary

Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Dyspepsia Dimension During the 26-week Visit or the Week Prior to the Last Visit.

RDQ contains 12 items on a 6-point Likert scale. Six items concern the frequence ('Did not have' to 'Daily') and six items concern the severity ('Did not have' to 'Severe'). The dyspepsia dimension contains the items 'Burning feeling in the center of the upper stomach' and 'Pain in the center of the upper stomach'. Best score possible 0, worst score possible - daily occurrence.

Time frame: RDQ was assessed at baseline, 8 weeks, 16 week, 26 weeks or upon withdrawal.

Population: Patients randomized who took at least one dose of study drug and completed RDQ questionnaire at baseline and at week 26 or the week prior to last visit were analyzed.

ArmMeasureValue (NUMBER)
Esomeprazole 40Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Dyspepsia Dimension During the 26-week Visit or the Week Prior to the Last Visit.591 participants
Esomeproazole 20Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Dyspepsia Dimension During the 26-week Visit or the Week Prior to the Last Visit.577 participants
PlaceboNumber of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Dyspepsia Dimension During the 26-week Visit or the Week Prior to the Last Visit.504 participants
Secondary

Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Gastroesophageal Reflux Disease Dimension During the 26-week Visit or the Week Prior to the Last Visit.

RDQ contains 12 items on a 6-point Likert scale. Six items concern the frequency ('Did not have' to 'Daily') and six items concern the severity ('Did not have' to 'Severe'). Gastroesophageal reflux disease (GERD) items: 'Acid taste in the mouth', 'Unpleasant movement of materials upward from the stomach', 'Burning feeling behind the breastbone' and 'Pain behind the breastbone'. Best score possible 0, worst score possible - daily occurrence.

Time frame: RDQ was assessed at baseline, 8 weeks, 16 week, 26 weeks or upon withdrawal.

Population: Patients randomized who took at least one dose of study drug and completed RDQ questionnaire at baseline and at week 26 or the week prior to last visit were analyzed.

ArmMeasureValue (NUMBER)
Esomeprazole 40Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Gastroesophageal Reflux Disease Dimension During the 26-week Visit or the Week Prior to the Last Visit.554 participants
Esomeproazole 20Number of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Gastroesophageal Reflux Disease Dimension During the 26-week Visit or the Week Prior to the Last Visit.537 participants
PlaceboNumber of Participants Reporting 0 in the Dichotomized RDQ (Reflux and Disease Questionnaire) Score (0 Versus >0) for the Gastroesophageal Reflux Disease Dimension During the 26-week Visit or the Week Prior to the Last Visit.451 participants
Secondary

Number of Participants With Gastric and/or Duodenal Erosions.

Time frame: The number of erosions was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Population: Patients randomized who had endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

ArmMeasureValue (NUMBER)
Esomeprazole 40Number of Participants With Gastric and/or Duodenal Erosions.214 participants
Esomeproazole 20Number of Participants With Gastric and/or Duodenal Erosions.213 participants
PlaceboNumber of Participants With Gastric and/or Duodenal Erosions.380 participants
Secondary

Percentage of Participants Who Experienced the Occurence of Gastric Ulcer.

The occurrence of gastric ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Time frame: During 26 weeks

ArmMeasureValue (NUMBER)
Esomeprazole 40Percentage of Participants Who Experienced the Occurence of Gastric Ulcer.1.1 percentage of participants
Esomeproazole 20Percentage of Participants Who Experienced the Occurence of Gastric Ulcer.0.75 percentage of participants
PlaceboPercentage of Participants Who Experienced the Occurence of Gastric Ulcer.4.1 percentage of participants
Secondary

Percentage of Participants Who Experienced the Occurrence of Duodenal Ulcer.

The occurrence of duodenal ulcer (mucosal break measuring \>= 3 mm over its largest diameter with a sharply demarcated margin) was determined by endoscopy performed at baseline, 8 weeks and 26 weeks or upon withdrawal.

Time frame: During 26 weeks

ArmMeasureValue (NUMBER)
Esomeprazole 40Percentage of Participants Who Experienced the Occurrence of Duodenal Ulcer.0.24 percentage of participants
Esomeproazole 20Percentage of Participants Who Experienced the Occurrence of Duodenal Ulcer.0.25 percentage of participants
PlaceboPercentage of Participants Who Experienced the Occurrence of Duodenal Ulcer.2.73 percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 29, 2026