Working...
ClinicalTrials.gov
ClinicalTrials.gov Menu

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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT00001191
Recruitment Status : Completed
First Posted : November 4, 1999
Last Update Posted : July 2, 2017
Sponsor:
Information provided by:
National Institutes of Health Clinical Center (CC)

Tracking Information
First Submitted Date  ICMJE November 3, 1999
First Posted Date  ICMJE November 4, 1999
Last Update Posted Date July 2, 2017
Study Start Date  ICMJE February 3, 1983
Primary Completion Date Not Provided
Current Primary Outcome Measures  ICMJE Not Provided
Original Primary Outcome Measures  ICMJE Not Provided
Change History Complete list of historical versions of study NCT00001191 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE Not Provided
Original Secondary Outcome Measures  ICMJE Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid
Official Title  ICMJE The Use of Oral Omeprazole and Intravenous Pantoprazole in Patients With Hypersecretion of Gastric Acid
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.

Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 2
Study Design  ICMJE Primary Purpose: Treatment
Condition  ICMJE
  • Gastrinoma
  • Zollinger Ellison Syndrome
Intervention  ICMJE
  • Drug: Pantoprazole
  • Drug: Omeprazole
Study Arms  ICMJE Not Provided
Publications * 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.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Enrollment  ICMJE Not Provided
Original Enrollment  ICMJE
 (submitted: June¬†23,¬†2005)
9999
Study Completion Date  ICMJE December 10, 2007
Primary Completion Date Not Provided
Eligibility Criteria  ICMJE
  • 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.

Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT00001191
Other Study ID Numbers  ICMJE 830018
83-DK-0018
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party Not Provided
Study Sponsor  ICMJE National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account National Institutes of Health Clinical Center (CC)
Verification Date December 10, 2007

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP