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The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid

Primary Purpose

Gastrinoma, Zollinger Ellison Syndrome

Status
Completed
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Pantoprazole
Omeprazole
Sponsored by
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
About
Eligibility
Locations
Outcomes
Full info

About this trial

This is an interventional treatment trial for Gastrinoma focused on measuring Zollinger-Ellison Syndrome, Gastrinoma, Acid Hypersecretion, H+-K+ ATPase Inhibitor

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

INCLUSION CRITERIA: Subjects for receiving oral Omeprazole will be patients who have idiopathic gastric acid hypersecretion with basal rates of gastric acid secretion of greater than 15 mEq/hr and patients with Zollinger-Ellison syndrome with basal acid output greater than 10mEq/hr are eligible. Subjects with gastric acid hypersecretory states who are being treated with various antisecretory drugs under the protocols entitled "Medical Therapy of Zollinger-Ellison Syndrome" (89-DK-0015) are eligible. Patients must be 18 years of age or older. EXCLUSION CRITERIA: Female patients of childbearing age who are attempting to become pregnant, are pregnant, or are unwilling to practice effective birth control will be excluded. Patients who develop adverse reactions or allergic responses to Omeprazole will be excluded.

Sites / Locations

  • National Institutes of Health Clinical Center, 9000 Rockville Pike

Outcomes

Primary Outcome Measures

Secondary Outcome Measures

Full Information

First Posted
November 3, 1999
Last Updated
June 30, 2017
Sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
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1. Study Identification

Unique Protocol Identification Number
NCT00001191
Brief Title
The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid
Official Title
The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid
Study Type
Interventional

2. Study Status

Record Verification Date
December 10, 2007
Overall Recruitment Status
Completed
Study Start Date
February 3, 1983 (undefined)
Primary Completion Date
undefined (undefined)
Study Completion Date
December 10, 2007 (undefined)

3. Sponsor/Collaborators

Name of the Sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

4. Oversight

5. Study Description

Brief Summary
Patients with Zollinger-Ellison Syndrome suffer from ulcers of the upper gastrointestinal tract, higher than normal levels of gastric acid, and tumors of the pancreas known as non-beta islet cell tumors. Patients with Zollinger-Ellison Syndrome require continuous control of their gastric acid secretion. If gastric acid levels are permitted to rise higher than normal, patients may develop severe ulcers and other complications. This study will attempt to determine the effectiveness of Omeprazole (Prilosec) in the treatment of patients with Zollinger-Ellison Syndrome. Omeprazole is a drug that functions to decrease the amount of gastric acid secreted. Patients for this study will be selected based on a previous diagnosis of Zollinger-Ellison Syndrome and/or idiopathic (unknown cause) high levels of gastric acid secretion. The patients will undergo an evaluation including history and physical examination as well as necessary laboratory tests. The proper dose of Omeprazole will then be determined in each patient . The proper dose of Omeprazole is considered the minimum amount of omeprazole required to lower gastric acid to a safe level. Every year patients participating in this study will undergo a physical examination and history. They will be questioned about symptoms associated with Zollinger-Ellison Syndrome. Gastric acid levels will be taken and evaluated and patients will undergo an upper gastrointestinal endoscopy. The effectiveness of the treatment will be measured by a clinical history to determine the control of symptoms due to high levels of gastric acid secretion.
Detailed Description
Patients with Zollinger-Ellison syndrome require continuous control of their gastric acid secretion or else severe complications of peptic ulcer disease will occur. This study investigates the long-term efficacy of the oral gastric acid antisecretory drug, Omeprazole, which functions as a H+ - K+ ATPase inhibitor. Long-term safety will also be investigated. Also investigated is the ability of the parenteral H+-K+ ATPase inhibitor, pantoprazole to control acid secretion short-term, when oral Omeprazole cannot be used. In this study the proper maintenance dose of oral Omeprazole will be determined in each patient by determining the minimal dose of drug that reduces acid secretion to safe levels. Patients will be examined at least annually for evidence of continued efficacy and safety. Efficacy will be assessed by clinical history to assess control of symptoms due to gastric acid hypersecretion, measurements of gastric acid secretion while on Omeprazole to determine continued effectiveness of the drug and upper gastrointestinal endoscopy to assess changes in the gastrointestinal mucosa. Safety will be determined by assessing clinical and laboratory parameters such as changes in hematologic or clinical chemistry parameters. Possible drug induced changes in the gastric mucosa will be assessed by gastric biopsies. With intravenous pantoprazole the ability of the recommended dose of 80 mg three times a day to control acid secretion will be investigated and if this fails, 80 mg four times a day will be assessed.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Gastrinoma, Zollinger Ellison Syndrome
Keywords
Zollinger-Ellison Syndrome, Gastrinoma, Acid Hypersecretion, H+-K+ ATPase Inhibitor

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2

8. Arms, Groups, and Interventions

Intervention Type
Drug
Intervention Name(s)
Pantoprazole
Intervention Type
Drug
Intervention Name(s)
Omeprazole

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
INCLUSION CRITERIA: Subjects for receiving oral Omeprazole will be patients who have idiopathic gastric acid hypersecretion with basal rates of gastric acid secretion of greater than 15 mEq/hr and patients with Zollinger-Ellison syndrome with basal acid output greater than 10mEq/hr are eligible. Subjects with gastric acid hypersecretory states who are being treated with various antisecretory drugs under the protocols entitled "Medical Therapy of Zollinger-Ellison Syndrome" (89-DK-0015) are eligible. Patients must be 18 years of age or older. EXCLUSION CRITERIA: Female patients of childbearing age who are attempting to become pregnant, are pregnant, or are unwilling to practice effective birth control will be excluded. Patients who develop adverse reactions or allergic responses to Omeprazole will be excluded.
Facility Information:
Facility Name
National Institutes of Health Clinical Center, 9000 Rockville Pike
City
Bethesda
State/Province
Maryland
ZIP/Postal Code
20892
Country
United States

12. IPD Sharing Statement

Citations:
PubMed Identifier
616
Citation
Richardson CT, Walsh JH. The value of a histamine H2-receptor antagonist in the management of patients with the Zollinger-Ellison syndrome. N Engl J Med. 1976 Jan 15;294(3):133-5. doi: 10.1056/NEJM197601152940304.
Results Reference
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The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid

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