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Treatment Effect Between Dexlansoprazole and Double-dose Lansoprazole in Obesity Patients With Reflux Esophagitis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02759393
Recruitment Status : Unknown
Verified April 2016 by National Cheng-Kung University Hospital.
Recruitment status was:  Enrolling by invitation
First Posted : May 3, 2016
Last Update Posted : May 3, 2016
Information provided by (Responsible Party):
National Cheng-Kung University Hospital

Brief Summary:
The purpose of this study is to investigate whether dexlansoprazole can be as effective as double dose PPI to achieve SSR in high BMI cases with reflux esophagitis in Los Angeles grades A & B.

Condition or disease Intervention/treatment Phase
Gastroesophageal Reflux Disease Drug: Dexlansoprazole Drug: Lansoprazole Phase 4

Detailed Description:

This study is conducted in National Cheng Kung University Hospital, a tertiary health care center in Tainan, Taiwan. All participants give written informed consent before enrollment. After panendoscopy to confirm enrollment eligibility and reflux esophagitis in Los Angeles A or B, all patients are evenly randomized into a DEX group (receiving 8-week dexlansoprazole 60 mg per day) or double-dose PPI group (receiving 8-week lansoprazole 30 mg twice daily). The enrolled patients are randomized by two series of sealed envelopes containing a prescheduled group code; one series for the overweight patients and the other for the obese patients. In each series of the sealed envelopes, the number of the group code will be equal within every 10 sealed envelopes.

In each patient, the demographic factors and the genotype of S-mephenytoin 4'-hydroxylase (CYP2C19) will be checked and defined as poor metabolizer (PM), homologous (HomoEM) or heterologous extensive metabolizer (HeteroEM). Each patient is treated continuously with dexlansoprazole 60 mg per day or lansoprazole 30 mg twice daily for eight weeks. During this 8-week study period, each patient is requested to record their daily clinical symptoms of reflux esophagitis on a special sheet, including the severity of acid regurgitation (AR, score 0: free from symptoms; score 1: attack episodes < 5 times per day; score 2: 6-10 times per day; score 3: more than 10 episodes per day), heartburn (HB, score 0: absence of symptoms; score 1: tolerable events not interfering with daily work; score 2: intolerable events interfering with daily work, but not needing medication to relieve the symptoms; score 3: complaints interfering with the completion of daily work, or causing the patient to wake up during the night with cough, or combined with any other non-specific complaints). The patients are scheduled to return to clinics for drug refills, and to hand back daily symptom records at the end of the fourth and eighth week of treatment.

The cumulative proportions of patients with sustained symptomatic response (SSR), defined as free from acid regurgitation and heartburn for the last seven days, are recorded during the 8-week study period for each study group. All of the patients starting the treatment are included for the intention-to-treat (ITT) analysis of the rate of SSR. If patients have obvious symptoms despite continuous PPI usage and have an unscheduled visit to load up on additional PPIs during the study, the case is then dropped from the per-protocol (PP) analysis. In addition, patients lost to follow-up are excluded from the PP analysis to determine the rate of SSR. Besides comparing the difference of the rate of SSR between the two study groups, the study also determined whether patients with different CYP2C19 genotypes have differences in the cumulative rates of SSR after therapy between the two study groups.

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 200 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Comparing Dexlansoprazole With Double-dose Lansoprazole to Achieve Sustained Symptomatic Response in Overweight and Obesity Patients With Reflux Esophagitis in Los Angeles Grades A & B
Study Start Date : October 2015
Estimated Primary Completion Date : July 2017
Estimated Study Completion Date : September 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: GERD

Arm Intervention/treatment
Experimental: DEX group
receiving 8-week dexlansoprazole 60 mg per day
Drug: Dexlansoprazole
receiving 8-week PPI

Active Comparator: Double-dose PPI group
receiving 8-week lansoprazole 30 mg twice daily
Drug: Lansoprazole
receiving 8-week PPI

Primary Outcome Measures :
  1. the rate of sustained symptomatic response (SSR) [ Time Frame: 8 weeks ]

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 95 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Eligible participants included patients ≥20 years with either overweight (BMI of 25-30 kg/m2) or obese (BMI > 30 kg/m2), who had undergone panendoscopy due to typical clinical symptoms of either acid regurgitation, heartburn sensation, or both. By the results of panendoscopy, patients with the severity of grade A or B esophageal reflux, according to the Los Angeles classification, are enrolled.

Exclusion Criteria:

  • Patients are excluded if they have taken antisecretory agents, including histamine-2 receptor antagonist and PPI, within two weeks prior to the panendoscopy. The following conditions are also excluded: the presence of peptic ulcers, pregnancy, major medical problems (including hypertension, liver cirrhosis, COPD, asthma, renal failure and congestive heart failure), or previous gastric surgery. Patients who have an allergy history to dexlansoprazole or lansoprazole are also excluded.

Information from the National Library of Medicine

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 identifier (NCT number): NCT02759393

Sponsors and Collaborators
National Cheng-Kung University Hospital
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Study Director: Bor-Shyang Sheu, MD National Cheng-Kung University Hospital

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Responsible Party: National Cheng-Kung University Hospital Identifier: NCT02759393    
Other Study ID Numbers: MOHW104-TDU-B-2111-113002
First Posted: May 3, 2016    Key Record Dates
Last Update Posted: May 3, 2016
Last Verified: April 2016
Additional relevant MeSH terms:
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Gastroesophageal Reflux
Esophagitis, Peptic
Esophageal Motility Disorders
Deglutition Disorders
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Peptic Ulcer
Duodenal Diseases
Intestinal Diseases
Stomach Diseases
Anti-Ulcer Agents
Gastrointestinal Agents
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action