title: Clinical trial: the effects of the proton pump inhibitor dexlansoprazole MR on daytime and nighttime heartburn in patients with non-erosive reflux disease.
abstract: BACKGROUND
  The proportion of patients who respond to proton pump inhibitor (PPI) therapy is about 20% lower in those with non-erosive reflux disease (NERD) than in those with erosive oesophagitis.
  
  
  OBJECTIVE
  To assess efficacy and safety of dexlansoprazole MR, a PPI using Dual Delayed Release technology, in NERD patients.
  
  
  METHODS
  In this 4-week, double-blind, placebo-controlled study, 947 NERD patients randomly received dexlansoprazole MR 30 mg, 60 mg or placebo once daily (QD). The percentages of 24-h heartburn-free days (primary) and nights without heartburn (secondary) were assessed from patients' daily diaries. Investigators also assessed symptoms. Patients completed validated quality of life and symptom severity questionnaires.
  
  
  RESULTS
  Dexlansoprazole MR provided significantly greater median percentages of 24-h heartburn-free days (54.9% and 50.0% for the 30- and 60-mg doses vs. 17.5% for placebo, P < 0.00001) and nights without heartburn (80.8% and 76.9% vs. 51.7%, P < 0.00001 vs. placebo). Dexlansoprazole MR also reduced symptom severity. Quality of life improvements in patients receiving dexlansoprazole MR were consistent with clinical efficacy endpoints. Percentages of patients experiencing treatment-emergent adverse events were similar among groups.
  
  
  CONCLUSIONS
  Dexlansoprazole MR 30 and 60 mg were superior to placebo in providing 24-h heartburn-free days and nights in NERD patients. Treatment was well tolerated.
authors.affiliation: Section of Gastroenterology, University of Arizona Health Science Center and Southern Arizona VA Health Care System, Tucson, AZ 85723, USA. ronnie.fass@va.gov
authors.forename: R
authors.initials: R
authors.lastname: Fass
authors.forename: W D
authors.initials: WD
authors.lastname: Chey
authors.forename: S F
authors.initials: SF
authors.lastname: Zakko
authors.forename: N
authors.initials: N
authors.lastname: Andhivarothai
authors.forename: R N
authors.initials: RN
authors.lastname: Palmer
authors.forename: M C
authors.initials: MC
authors.lastname: Perez
authors.forename: S N
authors.initials: SN
authors.lastname: Atkinson
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles / Q000008:administration & dosage*; D000328:Adult; D003692:Delayed-Action Preparations; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D005260:Female; D005764:Gastroesophageal Reflux / Q000188:drug therapy*; D006356:Heartburn; D006801:Humans; D008297:Male; D008875:Middle Aged; D054328:Proton Pump Inhibitors / Q000008:administration & dosage*; D013223:Statistics as Topic; D013997:Time Factors; D016896:Treatment Outcome; D014481:United States
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D003692:Delayed-Action Preparations; D054328:Proton Pump Inhibitors