A clinical trial comparing pantoprazole and esomeprazole to explore the concept of achieving 'complete remission' in gastro-oesophageal reflux disease.

BACKGROUND AND AIM

The outcome of gastro-oesophageal reflux disease treatment is traditionally assessed by measuring endoscopically confirmed healing and symptom relief separately. Both terms together, indicating complete remission, are intuitively a more realistic clinical endpoint but are assessed less often.

AIM

To explore this concept, we formally compared the efficacy of the proton pump inhibitors (PPIs) pantoprazole and esomeprazole using rates of complete remission judged against rates of healing and symptom relief separately.

METHODS

Five hundred and eighty-two patients with erosive gastro-oesophageal reflux disease were randomized to treatment for 4, 8, or 12 weeks with either pantoprazole or esomeprazole 40 mg daily. Symptom relief was assessed with the validated ReQuesttrade mark-GI subscale.

RESULTS

Approximately 75% of patients were free of symptoms or had no oesophageal lesions after 4 weeks' treatment, rising to about 93% and 96%, respectively, at 12 weeks. Complete remission rates were, however, lower at these time points; approximately 60% and about 90%, respectively. Both PPIs had similar efficacy.

CONCLUSIONS

Endoscopically confirmed healing and symptom relief assessed separately over-estimated the benefits of both drugs. In contrast, complete remission indicates that patients may be treated inadequately when given the standard 4- to 8-week treatment. We suggest that complete remission is a more reliable and clinically relevant endpoint of treatment.