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Osteoporosis SecondaryPhase 2RIGIDNCT06421597

Identifying Individuals at Risk of Glucocorticoid-Induced Impairment of Bone Disease

A Phase 2 study testing Prednisolone in people with Osteoporosis Secondary, run by Odense University Hospital at 2 sites in Denmark.

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

Previous studies have shown that there is a large inter-individual variability in the degree of bone loss during glucocorticoid treatment, and while some patients experience extensive bone loss other patients\' bone mass remains stable. Read more about this study

Who is it for?
Ages 18 to 50 yearsHealthy volunteers can take part
Conditions the study is for
Osteoporosis Secondary
What is being tested?
Prednisolone
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
36 participants
Where
2 sitesDenmark
Study dates
4 Nov 2024to 1 Apr 2026
Phase
Phase 2
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 18 to 50 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Men and women aged 18-50 years.

Who cannot join

  • Uncontrolled thyrotoxicosis
  • Chronic kidney disease (eGFR <30)
  • Known Cushing's syndrome
  • Previous gastric bypass and/or known ongoing malabsorption
  • Severe covid-19 in the last 3 month (defined as needing dexamethasone treatment)
  • Use of oral or inhaled glucocorticoids within the past year
Show all 13Show fewer
  • Menopause (defined as 1 year without menstrual bleeding)
  • Pregnancy (defined as elevated HCG)
  • Ongoing infection
  • Allergy to prednisolone or one of the excipients
  • Systematic fungal infections
  • Vaccination with living or weaken viral or bacterial vaccines in patient who or immunocompromised. In these cases, prednisolone treatment should not be administered two weeks before and after vaccination
  • Not able to provide informed consent (e.g., dementia, not able to understand Danish).

Trial locations and contacts

2 sites in 1 country.

Denmark2 sites
  • Hospital of South West Jutland

    Esbjerg, 6700

  • Odense University Hospital

    Odense C, 5000

Other trials in Denmark

About this study

Previous studies have shown that there is a large inter-individual variability in the degree of bone loss during glucocorticoid treatment, and while some patients experience extensive bone loss other patients\&#39; bone mass remains stable. The aim of the study is to find a biomarker that can be used to identify individuals at risk of glucocorticoid-induced bone loss. The study will include 36 healthy volunteers, that will be randomized to receive either glucocorticoid treatment or placebo. During the study blood samples, bone marrow samples, bone tissue samples, and adipose tissue samples are taken and an oral glucose tolerance test is performed.

Being tested
Prednisolone, Placebo

What participants receive

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

  • PrednisoloneDrug

    prednisoline 25 mg/day for seven days

  • PlaceboDrug

    Placebo treatment for seven days

Study groups in NCT06421597
Study groupRoleWhat they receive
Prednisolone groupExperimentalNot described
Receives: Drug: Prednisolone
Placebo groupPlacebo comparatorNot described
Receives: Drug: Placebo

What is being measured

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

  1. Procollagen type 1 N-terminal propeptide (P1NP)

    Changes in the level of the bone turnover marker P1NP in peripheral blood from baseline to day 8

    Measured: Baseline to day 8

Secondary outcomes (7)
  1. Collagen 1 cross link C-terminal telopeptide (CTX)

    Changes in the level of the bone turnover marker CTX in peripheral blood from baseline to day 8 and 15

    Measured: Baseline to day 8 and 15

  2. P1NP (baseline to day 15)

    Changes in the level of the bone turnover marker P1NP in peripheral blood from baseline to day 15

    Measured: Baseline to day 15

  3. Concentration of Glucocorticoid metabolites

    Changes in the levels of glucocorticoid metabolites in blood from baseline to day 8

    Measured: Baseline to day 8

  4. Adipose tissue

    Changes in gene expression in abdominal and gluteal subcutaneous adipose tissue from baseline to day 8

    Measured: Baseline to day 8

  5. Bone tissue

    Changes in gene expression in bone tissue from baseline to day 8

    Measured: Baseline to day 8

  6. Glucose

    Changes in glucose levels during a mixed meal test from baseline to day 8

    Measured: Baseline to day 8

  7. C-peptid

    Changes in c-peptid levels during a mixed meal test from baseline to day 8

    Measured: Baseline to day 8

Timeline

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

  1. First posted20 May 2024
  2. Study start4 Nov 2024
  3. Primary completion30 Mar 2026
  4. Study completion1 Apr 2026

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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
36 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06421597
Sponsor's protocol ID
2023-506949-27-00
Other IDs
2023
Acronym
RIGID
Status last verified
Oct 2026
First submitted
3 May 2024
Last updated
20 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data will not be shared with other researchers other than collaborators. Since the data contains personal information from the study participants

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Prednisolone in people with Osteoporosis Secondary, run by Odense University Hospital at 2 sites in Denmark.

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 13 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 20 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Denmark. 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. Some participants in this study may receive a placebo. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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?

Procollagen type 1 N-terminal propeptide (P1NP) (time frame: Baseline to day 8). 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 20 Oct 2026.

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