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Safety and Efficacy of Pegvisomant in Children With Growth Hormone Excess

NCT03882034 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2025-11-06

No results posted yet for this study

Summary

Background:

For children with gigantism, too much growth hormone (GH) in the body causes abnormal growth and many other problems. Current treatments often don t work; no medical treatment is approved by FDA. Researchers want to see if the drug pegvisomant can help.

Objective:

To test the role of pegvisomant in children and adolescents with gigantism.

Eligibility:

People ages 2-18 with GH excess for whom usual treatments have not worked or who are not eliginle for them

Design:

Participants will be screened with a medical history.

The study will last 60 weeks and include at least 3 visits: baseline, 6-month, and 12-month visits. For the baseline visit, participants will stay a few nights for testing. They may stay overnight for the other visits.

All visits will include:

Medical history

Physical exam

Questionnaires

Heart and liver tests

Participants may be photographed in their underwear if they agree.

Blood tests: Participants will get a catheter: A small plastic tube will be placed in an arm vein. For some tests, the blood may be drawn every 30 minutes over 3 hours. For other tests, blood will be drawn every 20 minutes over 12 hours. Only clinically necessary tests will be done in each patient.

At the baseline visit, participants will have the study drug injected under the skin. They will learn to take the injection at home. They will take the injection daily during the study.

The baseline and 12-month visits will include:

MRI: Participants will have a dye injected into a vein. They will lie in a machine that takes pictures of the body.

Hand X-ray

Participants must get their height and weight at their local doctor s office monthly.

Participants must have blood and urine tests at their local lab monthly for the first 6 months then every 3 months until the study ends.

...

Conditions

  • Pituitary Disease

Interventions

DRUG

Pegvisomant

A fixed dose of pegvisomant 10-mg started on Day 1 of intervention and continued daily afterwards, will be administered subcutaneously according to manufacturer's recommendations. Adjustment of the dose will occur as per protocol.

Sponsors & Collaborators

  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

    lead NIH

Principal Investigators

  • Karim A Calis, Pharm.D. · Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
2 Years
Max Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-10-21
Primary Completion
2025-09-08
Completion
2025-09-30
FDA Drug
Yes

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03882034 on ClinicalTrials.gov