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Study of effectiveness of on-demand therapy using 20mg vonoprazan for NERD (Grade M by revised LA classification) well controlled with a proton pump inhibitor (PPI)

Study of effectiveness of on-demand therapy using 20mg vonoprazan for NERD (Grade M by revised LA classification) well controlled with a proton pump inhibitor (PPI) - Usefulness of on-demand therapy using 20mg vonoprazan for NERD (Grade M by revised LA classification)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000033821
Enrollment
30
Registered
2018-09-01
Start date
2017-12-04
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

NERD(Grade M by revised LA classification)

Interventions

On-demand therapy using 20-mg vonoprazan (8 weeks)

Sponsors

Nippon Medical School Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Over 20 years old and younger than 80 years old 2. Both males and females 3. Outpatients 4. Patients who have been diagnosed with NERD (LA classification, Grade M), maintain remission by standard-dose PPI therapy, and satisfied with the treatment, and have an esophageal hiatal hernia smaller than 2cm 5. Patients who understood study, and provided written consent based on their own will

Exclusion criteria

Exclusion criteria: 1. Allergy patients to drugs being studied 2. Patients with critical dysfunction of liver and kidney 3. Patients with malignancy 4.Patints suspected with active infection 5. Pregnant or possibility of being pregnant, and those who are breastfeeding 6. Study participation decided to be contraindicated by the parson in charge

Design outcomes

Primary

MeasureTime frame
1. The overall satisfaction level after 8-week on-demand therapy 2. The gastrin level before breakfast and the number of 20-mg vonoprazan tablets taken before and after on-demand therapy (8 weeks)

Countries

Japan

Contacts

Public ContactKatsuhiko Iwakiri

Nippon Medical School Department of Gastroenterology

k-iwa@nms.ac.jp03-3822-2131

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026