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ADX10059 as an add-on Therapy to Proton Pump Inhibitors (PPIs) in Patients With Gastroesophageal Reflux (GERD)

This study has been completed.
Information provided by (Responsible Party):
Addex Pharma S.A. Identifier:
First received: December 17, 2008
Last updated: July 13, 2012
Last verified: July 2012
The purpose of this study is to evaluate the effect of ADX10059 in patients with gastroesophageal reflux disease who are partial responders to proton pump inhibitors

Condition Intervention Phase
Gastroesophageal Reflux Drug: ADX10059 Drug: ADX10059 Matching Placebo Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Phase 2B, Randomised, Double-blind, Placebo-controlled, Parallel Group, Dose-ranging, Multi-centre Study to Investigate the Efficacy, Safety and Tolerability of the mGluR5 Negative Allosteric Modulator ADX10059 in Patients With Gastroesophageal Reflux Disease (GERD) Who Are Partial Responders to Proton Pump Inhibitor (PPI) Treatment

Resource links provided by NLM:

Further study details as provided by Addex Pharma S.A.:

Primary Outcome Measures:
  • Number of GERD symptom free days in week 4 of study medication treatment [ Time Frame: 4 weeks ]

Secondary Outcome Measures:
  • GERD symptoms [ Time Frame: 4 weeks ]
  • Sleep disturbance [ Time Frame: 4 weeks ]
  • Use of antacid medications [ Time Frame: 4 weeks ]
  • Global assessment of GERD [ Time Frame: 4 weeks ]
  • Safety and tolerability assessments [ Time Frame: 4 weeks ]

Enrollment: 298
Study Start Date: December 2008
Primary Completion Date: December 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: ADX10059 50 mg
Drug: ADX10059
oral administration
Experimental: ADX10059 100 mg
Drug: ADX10059
oral administration
Experimental: ADX10059 150 mg
Drug: ADX10059
oral administration
Placebo Comparator: ADX10059 Matching Placebo
Drug: ADX10059 Matching Placebo
oral administration


Ages Eligible for Study:   18 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • diagnosis of typical GERD
  • partial responder to a stable standard clinical symptoms control dose of PPI therapy
  • body mass index ≤ 32 kg/m2

Exclusion Criteria:

  • exclusively atypical symptoms of GERD
  • symptoms that have been shown not to be associated with GERD
  • erosive oesophagitis
  • treated with a dose of PPI greater than the dose indicated for clinical symptom control of GERD
  • hiatus hernia > 3 cm
  • current diagnosis of co-existing psychiatric disease
  • known clinical significant allergy or known hypersensitivity to drugs
  • is pregnant or breast-feeding
  • has received sodium valproate or topiramate within 30 days of Screening
  • has a history of a significant medical condition that may affect the safety of the patient or preclude adequate participation in the study
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00810485

  Show 40 Study Locations
Sponsors and Collaborators
Addex Pharma S.A.
  More Information

Responsible Party: Addex Pharma S.A. Identifier: NCT00810485     History of Changes
Other Study ID Numbers: ADX10059-205
Study First Received: December 17, 2008
Last Updated: July 13, 2012

Keywords provided by Addex Pharma S.A.:
Gastroesophageal reflux
Proton pump inhibitor

Additional relevant MeSH terms:
Gastroesophageal Reflux
Esophageal Motility Disorders
Deglutition Disorders
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Proton Pump Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action processed this record on September 21, 2017