A Study of the Effect of ONO-8539 on Oesophageal Pain Hypersensitivity in Patients With Non-erosive Reflux Disease

A Randomised, Double-blind, Placebo-controlled, Two-period Crossover Study to Investigate the Effect of ONO-8539 on Oesophageal Pain Hypersensitivity in Patients With Non-erosive Reflux Disease

A random controlled study to investigate the effect of a new drug, ONO-8539, on oesophageal pain hypersensitivity in patients with gastric reflux disease

This is a Randomised, Double-blind, Placebo-controlled, Two-period Crossover Study to Investigate the Effect of ONO-8539 on Oesophageal Pain Hypersensitivity in Patients With Non-erosive Reflux Disease

Inclusion Criteria:

• Male and female subjects aged 18-70 years inclusive with confirmed GERD and normal oesophageal mucosa will be enrolled in this study. Subjects demonstrate moderate intensity heartburn while being on a stable dose of proton pump inhibitor and demonstrate oesophageal hypersensitivity following distal oesophageal acid perfusion.

Exclusion Criteria:

• Subjects will be excluded if they have a motility disorder, are not able to tolerate study procedures or have had GI surgery or have a condition that would affect the study results. Subjects with functional heartburn, acute GI symptoms, endoscopic or manometric abnormality or a protocol-specified cardiovascular condition will not be enrolled.