Studies in Porphyria IV: Gonadotropin-Releasing Hormone (GnRH) Analogues for Prevention of Cyclic Attacks

June 23, 2005 updated by: National Center for Research Resources (NCRR)

OBJECTIVES:

Assess whether chronic administration of gonadotropin-releasing hormone analogues is safe and effective for the prevention of cyclic attacks of acute porphyria in women.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

PROTOCOL OUTLINE: All patients receive a gonadotropin-releasing hormone (GnRH) analogue. Treatment begins on days 1 to 3 of a menstrual cycle.

Low-dose estrogen begins at approximately 3 months. All patients must have a daily calcium intake of at least 1 gram; supplements are allowed.

Patients are followed for at least 1 year.

Study Type

Interventional

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Texas
      • Galveston, Texas, United States, 77555-0209
        • University of Texas Medical Branch

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

14 years to 51 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Female

Description

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics-- Acute porphyria, i.e.: Acute intermittent porphyria Hereditary coproporphyria Variegate porphyria Definite cyclic attacks with severe abdominal pain and other porphyria symptoms during luteal phase of menstrual cycle only Attacks resolve completely within 5 days of onset of menses, i.e., no symptoms between attacks At least 4 to 6 attacks during the 6 months prior to entry More than half of these attacks must meet the following criteria: Readily distinguishable from menstrual cramps and premenstrual syndrome Required hospitalization for narcotic analgesics, phenothiazines, hematin, intravenous fluids, or other treatment Luteal attacks not requiring hospitalization must be similar in symptoms and differ only in severity No life-threatening porphyria attacks No cyclic abdominal pain unless caused by porphyria --Prior/Concurrent Therapy-- At least 6 months since ovulation suppression --Patient Characteristics-- Reproductive: Menstrual cycle 25-35 days for at least 6 months prior to entry Pelvic exam normal within 60 days prior to entry Pap smear normal, i.e., no dysplasia No amenorrhea No other menstrual abnormality No other gynecologic abnormality Negative pregnancy test Medically approved contraception required for 2 months prior to entry and throughout study OR at least 1 menstrual cycle following tubal ligation Other: No allergy to gonadotropin-releasing hormone analogues No clinically significant abnormal laboratory test results No medical contraindication to protocol treatment

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Center for Research Resources (NCRR)

Collaborators

University of Texas

Investigators

  • Study Chair: Karl E Anderson, University of Texas

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 1987

Study Registration Dates

First Submitted

October 18, 1999

First Submitted That Met QC Criteria

October 18, 1999

First Posted (Estimate)

October 19, 1999

Study Record Updates

Last Update Posted (Estimate)

June 24, 2005

Last Update Submitted That Met QC Criteria

June 23, 2005

Last Verified

December 1, 2003

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 199/11885
  • UTMB-445
  • UTMB-312

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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