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An Efficacy Study to Compare the Treatment Effects of Rabeprazole and Lansoprazole Depending on the Genotyping of CYP2C19 in Treating Reflux Esophagitis

Effect of Rabeprazole and Lansoprazole on Reflux Esophagitis in Relation to CYP2C19 Genotype Status: A Prospective, Randomized, Multicenter Study

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01008696
Enrollment
217
Registered
2009-11-06
Start date
2007-05-31
Completion date
2008-08-31
Last updated
2013-08-13

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

Conditions

Reflux Esophagitis

Keywords

Reflux esophagitis, Rabeprazole, Lansoprazole

Brief summary

The purpose of this study is to compare the treatment effects of rabeprazole and lansoprazole depending on the genotyping (process of determining the genetic constitution) of CYP2C19 in treating reflux esophagitis (caused by gastroesophageal reflux; deterioration of the protective lining on the inner wall of the lower esophagus); and to evaluate the cure rate of reflux esophagitis on endoscopy (a thin flexible tube with a microscopic camera at the end which is passed down your throat into the esophagus, stomach, and duodenum) after treatment with rabeprazole and lansoprazole.

Detailed description

This is a prospective (study following participants forward in time), open-label (all people know the identity of the intervention), multi-center (conducted in more than 1 center), randomized (study drug assigned by chance) study in participants with reflux esophagitis. The study will include 4 visits: Visit 1 (Screening period of up to 14 days), Visit 2 (Day 1), Visit 3 (Day 29+3), and Visit 4 (Day 56). After Screening, eligible participants will be analyzed on Visit 2 (Day 1) for symptoms during past week, At visit 3 (Day 29+3) participants will be randomly assigned to 1 of the 2 treatment groups: rabeprazole 20 milligram (mg) or lansoprazole 30 mg group. Participants will receive rabeprazole 20 mg tablet orally once daily for 28 to 56 days or lansoprazole 30 mg capsule orally once daily for 28 to 56 days. A post-study follow-up visit will be conducted only if participant will be affected by any serious adverse event within 30 days after the completion of study drug. Participants will primarily be assessed for the cure rate of reflux esophagitis based on endoscopy of 2 groups. Participants' safety will be monitored throughout the study.

Interventions

DRUGRabeprazole

Rabeprazole 20 mg tablet orally once daily before breakfast for 28 to 56 days.

DRUGLansoprazole

Lansoprazole 30 mg capsule orally once daily before breakfast for 28 to 56 days.

Sponsors

Janssen Korea, Ltd., Korea
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Participants diagnosed with reflux esophagitis of Grade A or higher by Los Angeles (LA) classification based on the endoscopy among participants complaining of gastroesophageal reflux symptoms (such as: Heartburn, regurgitation, globus sensation, chronic \[lasting a long time\] cough \[sudden, loud flow if air from the lungs\], epigastric \[area above the navel\] pain, non-cardiac chest pain, hoarseness, or dysphagia), or those who diagnosed with reflux esophagitis of Grade B or higher without complaining of symptoms * Participants without other serious disease except the study indication (reflux esophagitis) * Participants with hematology (related to blood) panel, serum chemistry panel, or urinalysis result clinically within twice the normal range * Female Participants of child-bearing potential who are using the appropriate contraceptive or with a negative urine pregnancy test

Exclusion criteria

* Participants with other serious gastrointestinal disease except reflux esophagitis (example: digestive tract cancer \[abnormal tissue that grows and spreads in the body until it kills\], hepatic disease, pancreatic disease, and ulcer. However, the scar of an ulcer is included in study targets * Participants with other serious concomitant disease(s) such as renal disorder, cerebrovascular disease, cardiovascular disease, hepatic disease, and severe respiratory disease * Participants with medical history of upper gastrointestinal tract surgery, esophagostenosis, or a chalasia * Participants with hematology panel, serum chemistry panel, or urinalysis result of above twice the normal range * Participants who cannot discontinue proton pump inhibitors or Histamine 2 antagonist which may have influence on the study, 4 weeks before the start of this clinical study

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Day 57Reflux esophagitis evaluated by endoscopy as per LA Classification graded as: A=1 or more mucosal breaks no longer than 5 millimeter (mm) that did not extend between tops of 2 mucosal folds, B=1 or more mucosal breaks more than 5 mm long that did not extend between tops of 2 mucosal folds, C=1 or more mucosal break continuous between the tops of 2 or more mucosal folds but involves less than 75 percent of circumference, D=1 or more mucosal break involving at least 75 percent of circumference. Participants that were not categorized in any of the above mentioned grades (A to D) were considered as cured of reflux esophagitis. Participants were classified as CYP2C19 homozygous extensive, heterozygous extensive and poor metabolizers.

Secondary

MeasureTime frameDescription
Change From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline and Day 57Gastroesophageal reflux disease and abdominal GI-related symptoms (heartburn, regurgitation, globus sensation, chronic cough, epigastric pain, non cardiac chest pain, hoarseness, dysphagia, abdominal distension, bloating, post-prandial discomfort, early satiety, nausea, vomiting, belching) experienced by participants were assessed and graded into 4 categories: 0 (Nothing)=No symptom, 1 (Mild)=A little but not uncomfortable, 2 (Moderate)=Present but interfering daily life activities a little, 3 (Severe)=Very uncomfortable, interfering daily life activities or sleeping.
Overall Assessment of Study Medication by InvestigatorDay 57Investigator's overall assessment of study medication based on the global symptom assessment was measured. The assessment was categorized as: 2=very good, 1=good, 0=as usual, -1=bad and -2=very bad.

Participant flow

Pre-assignment details

Out of 225 participants consented, 217 were assigned to the study medication.

Participants by arm

ArmCount
Rabeprazole
Rabeprazole 20 mg tablet orally once daily before breakfast for 28 to 56 days
87
Lansoprazole
Lansoprazole 30 mg capsule orally once daily before breakfast for 28 to 56 days
91
Total178

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event10
Overall StudyOther23
Overall StudyParticipant's evasion of hospital visit54
Overall StudyParticipants' non-cooperation23
Overall StudyPhysician Decision51
Overall StudyWithdrawal by Subject24

Baseline characteristics

CharacteristicRabeprazoleLansoprazoleTotal
Age Continuous49.70 Years
STANDARD_DEVIATION 11.72
49.74 Years
STANDARD_DEVIATION 12.65
49.72 Years
STANDARD_DEVIATION 12.17
Sex: Female, Male
Female
12 Participants22 Participants34 Participants
Sex: Female, Male
Male
75 Participants69 Participants144 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
42 / 10842 / 109
serious
Total, serious adverse events
2 / 1080 / 109

Outcome results

Primary

Percentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19

Reflux esophagitis evaluated by endoscopy as per LA Classification graded as: A=1 or more mucosal breaks no longer than 5 millimeter (mm) that did not extend between tops of 2 mucosal folds, B=1 or more mucosal breaks more than 5 mm long that did not extend between tops of 2 mucosal folds, C=1 or more mucosal break continuous between the tops of 2 or more mucosal folds but involves less than 75 percent of circumference, D=1 or more mucosal break involving at least 75 percent of circumference. Participants that were not categorized in any of the above mentioned grades (A to D) were considered as cured of reflux esophagitis. Participants were classified as CYP2C19 homozygous extensive, heterozygous extensive and poor metabolizers.

Time frame: Day 57

Population: The Full analysis set (FAS) included participants who received study medication at least once and had follow-up data that could be used after Baseline among participants who met eligibility criteria. Last observation carried forward (LOCF) was used. Here, 'n'=participants evaluated for particular category of this outcome measure.

ArmMeasureGroupValue (NUMBER)
RabeprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Poor Metabolizer (n=15, 18)93.33 Percentage of participants
RabeprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Homozygous Extensive Metabolizer (n=42, 35)97.37 Percentage of participants
RabeprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Heterozygous Extensive Metabolizer (n=30, 38)100.00 Percentage of participants
LansoprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Homozygous Extensive Metabolizer (n=42, 35)93.94 Percentage of participants
LansoprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Heterozygous Extensive Metabolizer (n=30, 38)100.00 Percentage of participants
LansoprazolePercentage of Participants Completely Cured of Reflux Esophagitis Evaluated by Endoscopy Based on CYP2C19Poor Metabolizer (n=15, 18)100.00 Percentage of participants
p-value: 0.8849Chi-squared
p-value: 0.865Chi-squared
p-value: 0.266Chi-squared
Secondary

Change From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment Questionnaire

Gastroesophageal reflux disease and abdominal GI-related symptoms (heartburn, regurgitation, globus sensation, chronic cough, epigastric pain, non cardiac chest pain, hoarseness, dysphagia, abdominal distension, bloating, post-prandial discomfort, early satiety, nausea, vomiting, belching) experienced by participants were assessed and graded into 4 categories: 0 (Nothing)=No symptom, 1 (Mild)=A little but not uncomfortable, 2 (Moderate)=Present but interfering daily life activities a little, 3 (Severe)=Very uncomfortable, interfering daily life activities or sleeping.

Time frame: Baseline and Day 57

Population: The FAS included participants who received study medication at least once and had follow-up data that could be used after Baseline among participants who met eligibility criteria. Last observation carried forward (LOCF) was used. Here, 'n'=participants evaluated for particular category of this outcome measure

ArmMeasureGroupValue (MEAN)Dispersion
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Vomiting (n=87, 91)0.08 Units on a scaleStandard Deviation 0.38
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Epigastric pain (n=87, 90)0.91 Units on a scaleStandard Deviation 1
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Belching (n=87, 91)0.38 Units on a scaleStandard Deviation 0.7
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Bloating (n=87, 90)0.55 Units on a scaleStandard Deviation 0.82
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Non cardiac chest pain (n=85, 90)0.33 Units on a scaleStandard Deviation 0.71
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Regurgitation (n=87, 91)-0.89 Units on a scaleStandard Deviation 0.93
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Vomiting (n=87, 91)-0.08 Units on a scaleStandard Deviation 0.38
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Globus sensation (n=87, 91)-0.31 Units on a scaleStandard Deviation 0.69
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Hoarseness (n=87, 90)0.23 Units on a scaleStandard Deviation 0.54
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Chronic cough (n=87, 91)-0.22 Units on a scaleStandard Deviation 0.64
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Dysphagia (n=87, 91)0.16 Units on a scaleStandard Deviation 0.5
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Epigastric pain (n=87, 90)-0.77 Units on a scaleStandard Deviation 0.95
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline:Regurgitation (n=87, 91)0.98 Units on a scaleStandard Deviation 0.93
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57:Non cardiac chest pain (n=85, 90)-0.28 Units on a scaleStandard Deviation 0.65
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Abdominal distension (n=87, 91)0.61 Units on a scaleStandard Deviation 0.84
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Hoarseness (n=87, 90)-0.14 Units on a scaleStandard Deviation 0.51
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Globus sensation (n=87, 91)0.55 Units on a scaleStandard Deviation 0.82
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Abdominal distension (n=87, 91)-0.38 Units on a scaleStandard Deviation 0.8
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Heartburn (n=87, 91)-0.55 Units on a scaleStandard Deviation 0.83
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Bloating (n=87, 90)-0.41 Units on a scaleStandard Deviation 0.72
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Post-prandial discomfort (n=87, 91)0.53 Units on a scaleStandard Deviation 0.78
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day57:Post-prandial discomfort (n=87,91)-0.45 Units on a scaleStandard Deviation 0.73
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Chronic cough (n=87, 91)0.34 Units on a scaleStandard Deviation 0.7
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Early satiety (n=86, 91)-0.21 Units on a scaleStandard Deviation 0.49
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Early satiety (n=86, 91)0.27 Units on a scaleStandard Deviation 0.58
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Nausea (n=87, 91)-0.16 Units on a scaleStandard Deviation 0.48
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Dysphagia (n=87, 91)-0.11 Units on a scaleStandard Deviation 0.44
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Nausea (n=87, 91)0.16 Units on a scaleStandard Deviation 0.48
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Belching (n=87, 91)-0.25 Units on a scaleStandard Deviation 0.7
RabeprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Heartburn (n=87, 91)0.61 Units on a scaleStandard Deviation 0.84
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Belching (n=87, 91)-0.29 Units on a scaleStandard Deviation 0.54
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline:Regurgitation (n=87, 91)0.93 Units on a scaleStandard Deviation 0.96
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Nausea (n=87, 91)0.13 Units on a scaleStandard Deviation 0.37
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Dysphagia (n=87, 91)-0.14 Units on a scaleStandard Deviation 0.48
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Heartburn (n=87, 91)0.59 Units on a scaleStandard Deviation 0.89
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Globus sensation (n=87, 91)0.82 Units on a scaleStandard Deviation 0.78
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Chronic cough (n=87, 91)0.30 Units on a scaleStandard Deviation 0.66
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Epigastric pain (n=87, 90)0.94 Units on a scaleStandard Deviation 0.95
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Non cardiac chest pain (n=85, 90)0.26 Units on a scaleStandard Deviation 0.66
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Hoarseness (n=87, 90)0.22 Units on a scaleStandard Deviation 0.54
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Dysphagia (n=87, 91)0.22 Units on a scaleStandard Deviation 0.57
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Abdominal distension (n=87, 91)0.59 Units on a scaleStandard Deviation 0.8
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Bloating (n=87, 90)0.44 Units on a scaleStandard Deviation 0.75
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Post-prandial discomfort (n=87, 91)0.55 Units on a scaleStandard Deviation 0.76
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Early satiety (n=86, 91)0.25 Units on a scaleStandard Deviation 0.55
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Vomiting (n=87, 91)0.02 Units on a scaleStandard Deviation 0.15
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireBaseline: Belching (n=87, 91)0.36 Units on a scaleStandard Deviation 0.62
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Heartburn (n=87, 91)-0.54 Units on a scaleStandard Deviation 0.9
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Regurgitation (n=87, 91)-0.84 Units on a scaleStandard Deviation 0.95
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Globus sensation (n=87, 91)-0.32 Units on a scaleStandard Deviation 0.66
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Chronic cough (n=87, 91)-0.21 Units on a scaleStandard Deviation 0.61
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Epigastric pain (n=87, 90)-0.77 Units on a scaleStandard Deviation 0.92
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57:Non cardiac chest pain (n=85, 90)-0.20 Units on a scaleStandard Deviation 0.54
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Hoarseness (n=87, 90)-0.17 Units on a scaleStandard Deviation 0.55
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Abdominal distension (n=87, 91)-0.40 Units on a scaleStandard Deviation 0.76
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Bloating (n=87, 90)-0.37 Units on a scaleStandard Deviation 0.69
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day57:Post-prandial discomfort (n=87,91)-0.35 Units on a scaleStandard Deviation 0.74
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Early satiety (n=86, 91)-0.16 Units on a scaleStandard Deviation 0.58
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Nausea (n=87, 91)-0.11 Units on a scaleStandard Deviation 0.38
LansoprazoleChange From Baseline in Symptoms of Reflux Esophagitis Evaluated by the Symptom Assessment QuestionnaireChange at Day 57: Vomiting (n=87, 91)-0.02 Units on a scaleStandard Deviation 0.15
p-value: 0.7734Wilcoxon rank-sum test
p-value: 0.6414Wilcoxon rank-sum test
p-value: 0.7809Wilcoxon rank-sum test
p-value: 0.8294Wilcoxon rank-sum test
p-value: 0.9874Wilcoxon rank-sum test
p-value: 0.2776Wilcoxon rank-sum test
p-value: 0.6295Wilcoxon rank-sum test
p-value: 0.5335Wilcoxon rank-sum test
p-value: 0.8068Wilcoxon rank-sum test
p-value: 0.568Wilcoxon rank-sum test
p-value: 0.5913Wilcoxon rank-sum test
p-value: 0.5566Wilcoxon rank-sum test
p-value: 0.7047Wilcoxon rank-sum test
p-value: 0.3654Wilcoxon rank-sum test
p-value: 0.531Wilcoxon rank-sum test
Secondary

Overall Assessment of Study Medication by Investigator

Investigator's overall assessment of study medication based on the global symptom assessment was measured. The assessment was categorized as: 2=very good, 1=good, 0=as usual, -1=bad and -2=very bad.

Time frame: Day 57

Population: The FAS included participants who received the study medication at least once and had follow-up data that could be used after the Baseline among the participants meeting the eligibility criteria of this study. LOCF was used. Here, 'N'=participants evaluated for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
RabeprazoleOverall Assessment of Study Medication by Investigator1.37 Units on a scaleStandard Deviation 0.71
LansoprazoleOverall Assessment of Study Medication by Investigator1.43 Units on a scaleStandard Deviation 0.74
p-value: 0.5032Wilcoxon rank-sum test

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026