Changes of Left Ventricular Mass and Cardiac Function in Patients With Active Acromegaly During Treatment With the Growth Hormone Receptor Antagonist Pegvisomant

September 23, 2010 updated by: University of Wuerzburg

Changes of Left Ventricular Mass and Cardiac Function in Patients With Active Acromegaly During Treatment With the Growth Hormone Receptor Antagonist Pegvisomant: an Open-labelled, Prospective Study

The purpose of this study is to evaluate changes in left ventricular mass and cardiac function in patients with active acromegaly before and after treatment with the growth hormone receptor antagonist pegvisomant for one year.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

4

Phase

  • Phase 4

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

  • Germany
    • Bavaria
      • Wuerzburg, Bavaria, Germany, 97080
        • Recruiting
        • University of Wuerzburg, Department of Endocrinology
        • Contact:

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Active acromegaly in adult subjects (≥ 18 years) after surgery and/or radiation therapy with elevated IGF-1 levels despite treatment with somatostatin analogues or dopamine agonists
  • Pegvisomant therapy is indicated (i. e. patients who have had an inadequate response to surgery and/or radiation therapy and/or other medical therapy, or for whom these therapies are not appropriate)
  • Evidence of left ventricular hypertrophy (infero-lateral wall thickness ≥ 12 mm assessed by echocardiography) or
  • Evidence of impaired diastolic function (≥ stage 2 as assessed by echocardiography) or
  • Evidence of systolic dysfunction (Ejection fraction < 50% assessed by echocardiography)
  • Stable medication for arterial hypertension and heart failure for 3 months
  • Written informed consent.

Exclusion Criteria:

  • Pregnancy and lactation period
  • Previous therapy with Pegvisomant
  • Suspected or known hypersensitivity to the drug or any of its components
  • Contraindications for MRI
  • History of malignancy during the last 5 years
  • Suspected or known drug or alcohol abuse
  • Patients who are neither able to self administer study medication on a daily basis nor have a caregiver who can administer study medication to the patient on a daily basis
  • Any condition which in the opinion of the investigator makes the patient unsuitable for inclusion
  • Participation in another clinical trial
  • Pituitary adenoma with a distance to the optic chiasm of < 3 mm
  • Any other drug for treatment of acromegaly (e.g. dopamine agonists, Somatostatin analogues) which would be necessary during the study or patients who apply for radiotherapy
  • Instable heart insufficiency classified as NYHA IV.
  • Severe renal insufficiency, liver transplantation

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: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Pegvisomant
patients with active acromegaly and impaired cardiac function
Drug: pegvisomant
booster dosage 80 mg once sc., than 10 mg once per day, uptitration in steps of 5 mg up to an IGF-1 level in the normal range (every 4 weeks), max. 30 mg once per day. Duration of treatment: one year
Other Names:
  • Somavert

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Change in peak systolic strain rate (SRSYS) determined by Color Doppler Myocardial Imaging (CDMI).
Time Frame: one year
one year

Secondary Outcome Measures

Outcome Measure
Time Frame
Ejection fraction,Enddiastolic thickness of the infero-lateral wall,Diastolic function,Left ventricular mass index,Stroke volume,Ejection fraction (MRI),CO,Late hyperenhancement,IGF-I,insulin sensitivity,Ringsize,adverse events,Endothelial function
Time Frame: one year
one year

Collaborators and Investigators

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

Sponsor

University of Wuerzburg

Collaborators

Pfizer

Investigators

  • Principal Investigator: Bruno Allolio, MD, University of Wuerzburg. Department of Endocrinology

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

June 1, 2006

Study Completion (Anticipated)

December 1, 2010

Study Registration Dates

First Submitted

October 31, 2007

First Submitted That Met QC Criteria

November 1, 2007

First Posted (Estimate)

November 2, 2007

Study Record Updates

Last Update Posted (Estimate)

September 24, 2010

Last Update Submitted That Met QC Criteria

September 23, 2010

Last Verified

September 1, 2010

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • NRA 6290010
  • EudraCT No: 2006-001108-35

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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