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Growth Hormone DeficiencyPhase 4NCT00720902

Adult Growth Hormone Deficiency and Cardiovascular Risk

A Phase 4 study testing Blood draws, growth hormone releasing hormone (GHRH) & arginine and Carotid ultrasound in people with Growth Hormone Deficiency, run by Columbia University at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This protocol will assess the cardiovascular risk associated with growth hormone deficiency in adults. We will use multiple modalities to assess risk for heart attacks or strokes including blood work, ultrasound, MRI and endothelial cell biopsies in both patients who are growth hormone deficient and in patients with… Read more about this study

Who is it for?
Ages 19 to 65 years
Conditions the study is for
Growth Hormone Deficiency
What is being tested?
Blood draws, growth hormone releasing hormone (GHRH) & arginine and Carotid ultrasound
Could I receive a placebo?
No, everyone receives an active treatment
How many people
7 participants
Where
1 siteUnited States
Study dates
Feb 2007to May 2011
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 19 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adults 19 years or older who have undergone transsphenoidal surgery for a clinically non-secreting pituitary adenoma

Who cannot join

  • Currently taking growth hormone, radiation therapy in the past 5 years, changes in dose of other pituitary hormone replacement therapy in past 3 months, taking hydrocortisone (or its equivalent) at a dose of > 30 mg/day, pregnant or nursing women

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Columbia University, College of Physicians and Surgeons

    New York, New York, 10032

Other trials in United States

About this study

Official title: Assessment of Cardiovascular Risk Markers in GH Deficient Patients With Nonsecreting Pituitary Adenomas

This protocol will assess the cardiovascular risk associated with growth hormone deficiency in adults. We will use multiple modalities to assess risk for heart attacks or strokes including blood work, ultrasound, MRI and endothelial cell biopsies in both patients who are growth hormone deficient and in patients with normal growth hormone secretion. We hypothesize that adults with growth hormone deficiency will have results suggestive of an increased risk for cardiovascular disease.

Read the detailed description

Subjects will first be tested for possible growth hormone deficiency. This will be done by administering two intravenous medications that should stimulate growth hormone secretion and we will measure growth hormone in the blood every 30 minutes following the administration. Once we have the results on enough subjects we will split the cohort into those subjects who are growth hormone deficient and those who have normal growth hormone. The two groups will each undergo various tests all designed to assess some component of cardiovascular risk. Ultimately we will compare the results of each test to see if those who are growth hormone deficient have an increased risk for cardiovascular disease.

Being tested
Blood draws, growth hormone releasing hormone (GHRH) & arginine, Carotid ultrasound, MRI, Endothelial cell biopsy
Keywords
Growth hormone
Medical subject headings
Dwarfism, Pituitary

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Blood drawsProcedure or surgery

    Subjects will have serum cardiovascular markers assessed

  • growth hormone releasing hormone (GHRH) & arginineDrug

    Subjects will receive GHRH and arginine intravenously and then have blood drawn at frequent intervals over a 90 minutes to assess growth hormone secretion.

  • Carotid ultrasoundProcedure or surgery

    Subjects will have an ultrasound of their neck to assess their carotid arteries to look for intima-medial thickness.

  • MRIProcedure or surgery

    Subjects will have MRI and MR spectroscopy of the abdomen and lower extremities to assess for fat in internal organs and muscle.

  • Endothelial cell biopsyProcedure or surgery

    Subjects will undergo endothelial cell biopsies to harvest endothelial cells to study. It will occur once and takes approximately 20 minutes. Patients will have an iv placed and then a sterile wire is passed back and forth in the iv a couple of times. Three wires are passed.

Study groups in NCT00720902
Study groupRoleWhat they receive
A - Normal growth hormone secretionActive comparatorPatients who have undergone transsphenoidal surgery for a pituitary adenoma and have normal growth hormone secretion: Subjects will undergo a clinical exam with vital signs and blood draws, anthropometric measurements and skin fold thickness assessments. Subjects will also undergo GH stimulation testing with growth hormone releasing hormone (GHRH) \& arginine, MRI and MR spectroscopy, carotid ultrasound, and have an endothelial cell biopsy.
Receives: Procedure: Blood draws; Drug: growth hormone releasing hormone (GHRH) & arginine; Procedure: Carotid ultrasound; Procedure: MRI; Procedure: Endothelial cell biopsy
B - Growth hormone deficientActive comparatorPatients who have undergone transsphenoidal surgery for pituitary adenoma who are growth hormone deficient: Subjects will undergo a clinical exam with vital signs and blood draws, anthropometric measurements and skin fold thickness assessments. Subjects will also undergo GH stimulation testing with growth hormone releasing hormone (GHRH) \& arginine, MRI and MR spectroscopy, carotid ultrasound, and have an endothelial cell biopsy.
Receives: Procedure: Blood draws; Drug: growth hormone releasing hormone (GHRH) & arginine; Procedure: Carotid ultrasound; Procedure: MRI; Procedure: Endothelial cell biopsy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. C-reactive Protein (CRP) Levels

    C-reactive protein (CRP) levels in GH sufficient and GH deficient participants

    Measured: Day 1

  2. Homocysteine Level

    Homocytsteine levels in GH sufficient and GH deficient participants

    Measured: Day 1

  3. Total Cholesterol Level

    Total cholesterol levels in GH sufficient and GH deficient participants

    Measured: Day 1

Secondary outcomes (8)
  1. Percentage of Fat Measured by DXA DEXA

    Percentage of total body fat and trunk fat as measured by DXA

    Measured: Day 1

  2. Lean Body Mass by DXA DEXA

    Lean body mass as measured by DXA

    Measured: Day 1

  3. Insulin Sensitivity as Assessed by Fasting Insulin Levels

    Insulin sensitivity as assessed by fasting insulin levels

    Measured: Day 1

  4. Glucose Levels as Assessed by an Oral Glucose Tolerance Test

    Glucose levels as assessed by an oral glucose tolerance test

    Measured: Day 1

  5. Endothelial Function as Assessed by Flow Mediated Dilatation and Endothelial Cell Biopsy

    Endothelial function as assessed by flow mediated dilatation and endothelial cell biopsy for measurement of inflammatory markers.

    Measured: Day 1

  6. Carotid Intimal-medial Thickness Studies as Assessed by Ultrasound

    Carotid intimal-medial thickness studies will be measured by ultrasound

    Measured: Year 1

  7. Intramyocellular Lipid Content Using MRI and MR Spectroscopy

    Intramyocellular lipid content using MRI and MR spectroscopy of the soleus muscle was performed.

    Measured: Day 1

  8. Intrahepatic Lipid Content Using MRI and MR Spectroscopy

    Intrahepatic lipid (IHL) content using MRI and MR spectroscopy of the liver was performed.

    Measured: Day 1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Jul 2008 (estimated)
  2. Study startFeb 2007
  3. Primary completionMar 2010
  4. Study completionMay 2011

Why it stopped: poor enrollment

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Other
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
7 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00720902
Sponsor's protocol ID
AAAB9681 (Serono-001)
Other IDs
Serono-001
Status last verified
Oct 2022
First submitted
16 Jun 2008
Last updated
16 Nov 2022
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Blood draws, growth hormone releasing hormone (GHRH) & arginine and Carotid ultrasound in people with Growth Hormone Deficiency, run by Columbia University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 16 Nov 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 16 Nov 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

C-reactive Protein (CRP) Levels (time frame: Day 1). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 16 Nov 2022.

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