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Growth Hormone DeficiencyPhase 4NCT01877512

GH and Cardiovascular Risk Factors

A Phase 4 study testing Change in daily dosage of Growth Hormone in people with Growth Hormone Deficiency and Cardiovascular Diseases, run by Amsterdam UMC, location VUmc at 1 site in Netherlands.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Rationale: Abnormally low and high levels of insulin-like growth factor-I (IGF-I) are both associated with increased metabolic risk. Since (U-shaped) associations of IGF-I, within the normal range, have also been found with cardiovascular risk factors and disease in the general population, it would be interesting to… Read more about this study

Who is it for?
Ages 20 to 65 years
What is being tested?
Change in daily dosage of Growth Hormone
Could I receive a placebo?
No, everyone receives an active treatment
How many people
32 participants
Where
1 siteNetherlands
Study dates
May 2013to Apr 2014
Phase
Phase 4
Are there results?
None posted in the registry

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

Who may be able to join

  • Ongoing surveillance at our centre (VUmc)
  • Stable substitution therapy for other pituitary hormone deficiencies

Who cannot join

  • Subjects with a craniopharyngioma as cause of their GHD or pituitary deficiencies
  • Contraindications for the use of GH treatment
  • (Receiving treatment for) malignant disease (in the past)
  • Cardiovascular event less than one year prior to inclusion
  • Participation in other studies
  • Subjects, who in the opinion of the investigator, are unsuitable in any other way to participate in this study

Trial locations and contacts

1 site in 1 country.

Netherlands1 site
  • VU University Medical Center

    Amsterdam, PO Box 7057, 1007 MB

Other trials in Netherlands

About this study

Official title: Effect of Growth Hormone Replacement Therapy on Cardiovascular Risk Factors in Adult Patients With Severe Growth Hormone Deficiency: Association With IGF-I Concentration

Rationale: Abnormally low and high levels of insulin-like growth factor-I (IGF-I) are both associated with increased metabolic risk. Since (U-shaped) associations of IGF-I, within the normal range, have also been found with cardiovascular risk factors and disease in the general population, it would be interesting to investigate if this association can also be found in growth hormone deficient (GHD) adults treated with Growth Hormone (GH). This could be of interest for endocrinologists prescribing GH in clinical practice because strict dosing may become even more important. Next to that, scientific evidence for clinical practice is wanted.

Objective: Next to cardiovascular risk factors (main objectives: body composition and lipid profile; secondary objectives: remainder) we investigate the effect on glucose metabolism, physical performance, and neuropsychological functioning of different levels of IGF-I in GH treated GHD men and women.

Read more

Study design: Open-label randomized trial.

Study population: At least 32 subjects, both childhood as adult onset GHD men and women, receiving GH treatment for at least one year, with an age between 20 and 65 years.

Intervention: At entry subjects are already receiving GH treatment according to general clinical practice, and are expected to demonstrate an IGF-I concentration of 0 - 1 SD score (SDS) (normal dose). The group of men and group of women will be randomized to receive either a decrease of their regular dose of GH treatment (IGF-I target level of -2 - -1 SDS) (low dose), or an increase of their regular dose, (IGF-I target level of 1 - 2 SDS) (high dose) for at least 24 weeks.

Being tested
Change in daily dosage of Growth Hormone
Medical subject headings
Dwarfism, Pituitary, Cardiovascular Diseases, Metabolic Syndrome, Motor Activity

What participants receive

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

  • Change in daily dosage of Growth HormoneDrug

    Also called Change in daily dosage of Somatropin

Study groups in NCT01877512
Study groupRoleWhat they receive
Low dose Growth HormoneActive comparatorHalve of the group of men and group of women will receive a decrease of their regular dose of Growth Hormone treatment, with the IGF-I target level of -2 - -1 SD score (low dose=LD).
Receives: Drug: Change in daily dosage of Growth Hormone
High dose Growth HormoneActive comparatorHalve of the group of men and group of women will receive an increase of their regular dose of Growth Hormone treatment, with the IGF-I target level of 1 - 2 SD score (high dose=HD).
Receives: Drug: Change in daily dosage of Growth Hormone

What is being measured

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

  1. Change in cardiovascular risk (body composition and lipid profile)

    Measured: 24 weeks

Secondary outcomes (4)
  1. Change in cardiovascular risk (inflammatory markers, vascular stiffness, endothelial function, presence of the metabolic syndrome)

    Measured: 24 weeks

  2. Change in physical performance (muscle strength, physical activity)

    Measured: 24 weeks

  3. Change in glucose metabolism (fasting and 2hr postprandial glucose, insulin resistance)

    Measured: 24 weeks

  4. Change in neuropsychological functioning (QoL, cognition, mood)

    Measured: 24 weeks

Timeline

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

  1. First posted13 Jun 2013 (estimated)
  2. Study startMay 2013
  3. Primary completionApr 2014
  4. Study completionApr 2014

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
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
32 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01877512
Sponsor's protocol ID
2013/12
Other IDs
U1111-1142-9659, 2012-005066-36
Status last verified
May 2014
First submitted
11 Jun 2013
Last updated
7 May 2014
Results posted
No

Publications

  • van Bunderen CC, Meijer RI, Lips P, Kramer MH, Serne EH, Drent ML. Titrating Growth Hormone Dose to High-Normal IGF-1 Levels Has Beneficial Effects on Body Fat Distribution and Microcirculatory Function Despite Causing Insulin Resistance. Front Endocrinol (Lausanne). 2021 Feb 9;11:619173. doi: 10.3389/fendo.2020.619173. eCollection 2020.

    PubMed 33633687
  • van Bunderen CC, Deijen JB, Drent ML. Effect of low-normal and high-normal IGF-1 levels on memory and wellbeing during growth hormone replacement therapy: a randomized clinical trial in adult growth hormone deficiency. Health Qual Life Outcomes. 2018 Jul 6;16(1):135. doi: 10.1186/s12955-018-0963-2.

    PubMed 29980224

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Change in daily dosage of Growth Hormone in people with Growth Hormone Deficiency and Cardiovascular Diseases, run by Amsterdam UMC, location VUmc at 1 site in Netherlands.

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 2 inclusion and 6 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: finished, as of the sponsor's last update on 7 May 2014. 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 Netherlands. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Change in cardiovascular risk (body composition and lipid profile) (time frame: 24 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01877512, which also lists 2 linked publications.

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 7 May 2014.

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