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Type 2 DiabetesNCT05642143

Deep Phenotyping of Bone Disease in Type 2 Diabetes and Relations to Diabetic Neuropathy

An observational study of Type 2 Diabetes and Bone Disease, run by Aalborg University Hospital at 1 site in Denmark.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Objectives: The goal of this cross sectional clinical trial is to examine the phenotype of bone disease in type 2 diabetes.The main aims are to: 1. Compare bone microarchitecture, bone biomechanical competence, and bone turnover markers as well as postural control in T2D patients with and without fractures. 2. Read more about this study

Who is it for?
Ages 40 years and older
Conditions the study is for
Type 2 Diabetes, Bone Disease, Osteoporosis
What is being tested?
Dual Energy X-ray Absorbtiometry scan, High-resolution peripheral quantitative computed tomography and Microindentation
How many people
300 participants
Where
1 siteDenmark
Study dates
24 Feb 2023to Apr 2026
Phase
Observational
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 40 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: T2D with and without fractures and neuropathy.

Who may be able to join

  • Men and women with minimum 40 years of age.
  • Diagnosis of T2D. At least one of the following criteria must be met at diagnosis:
  • HbA1c ≥ 48 mmol/mol (6,5 %)
  • Plasma glucose ≥ 11,1 mmol/l
  • Fasting plasma glucose ≥7,0 mmol/l Clinical effect of oral antidiabetic medication strengthens the diagnosis.
  • Diagnosis of diabetes at least one year prior to inclusion of the study to avoid honeymoon diabetes.
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  • A history of fracture(s) (confirmed by radiographs analyzed by radiologist) following the diabetes diagnosis (T2D F+ group)
  • Diagnosed with severe peripheral (VPT ≥ 50) or autonomic neuropathy defined by cardiac autonomic reflex tests or severe abnormalities in orthostatic blood pressure (T2D N+ group)
  • Signed the informed consent.
  • Not defined by the exclusion criteria.

Who cannot join

  • Severe decreased liver function (Alanin amino-transaminase (ALAT) >250 U/l, Gamma-Glutamyltransferase (GGT) >150 U/l).
  • Moderate to severe kidney dysfunction, estimated Glomerular Filtration Rate (eGFR) <15 mmol/L/1,73m2.
  • Pregnancy or breast feeding.
  • Active malignancy or terminal ill.
  • Previous chemotherapy or immunomodulating treatment
  • Known severe vitamin deficiency
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  • Current or previous alcohol- or drug abuse.
  • Not being able to understand Danish written and/or verbally.
  • Terms according to investigators judgement that makes subjects unsuitable to participate including lack of ability to understand and comply with instructions and/or reduced physical ability, limiting the ability to participate in the examinations.
  • Participating in other clinical studies utilizing experimental treatment or medication.
  • Subjects with pathologic fractures (defined as fractures due to local tumors, tumor-like lesions, or focal demineralization as visualized on radiographs).
  • Primary hyperparathyroidism, Paget's disease and other metabolic bone diseases, uncontrolled thyrotoxicosis, celiac disease not controlled by diet, known hypogonadism, severe COPD, hypopituitarism, Cushing's disease.
  • Fracture < 6 month ago
  • Initiation of antiresorptive or bone anabolic drugs <12 months ago to ensure stable bone turnover markers.
  • History of fractures following the diagnosis of diabetes (T2D F-/N- and T2D N+ groups).
  • History of peripheral or autonomic neuropathy defined by cardiac autonomic reflex tests or severe abnormalities in orthostatic blood pressure (T2D F-/N- group).

Trial locations and contacts

1 site in 1 country.

Julie Lindgård Graversen, MD contact

97663651 ext. +45

j.lindgaard@rn.dk

Peter Vestergaard, MD, PhD, Professor contact

97663673 ext. +45

peter.vestergaard@rn.dk

Denmark1 site, 1 recruiting
  • Steno Diabetes Center Nordjylland

    Aalborg, 9000

    Julie Lindgård Graversen, MD

    Recruiting

Other trials in Denmark

About this study

Objectives:

The goal of this cross sectional clinical trial is to examine the phenotype of bone disease in type 2 diabetes.The main aims are to:

Read more
  1. Compare bone microarchitecture, bone biomechanical competence, and bone turnover markers as well as postural control in T2D patients with and without fractures.
  2. Examine how autonomic and peripheral neuropathy affects bone microarchitecture, bone material strength and bone turnover markers as well as postural control in T2D.

Methods:

The trial is of cross-sectional design and consists of examinations including

  • Blood samples to analyze bone markers, glycemic state i.e.
  • Bone scans including dual energy x-ray absorptiometry (DXA) and high resolution peripheral quantitative computed tomography (HRpQCT) to evaluate Bone Mineral Density, t-score and bone structure.
  • Microindentation to evaluate bone material strength
  • Skin autofluorescence to measure levels of advanced glycation endproducts (AGEs) in the skin
  • Assesment of nerve function (peripheral and autonomic)
  • Assesment of postural control, muscle strength and gait

Participants:

A total of 300 type 2 diabetes patients divided to three groups:

  • 160 with no history of fractures or diabetic neuropathy
  • 100 with a history of fracture(s)
  • 40 with autonomic neuropathy or severe peripheral neuropathy
Being tested
Dual Energy X-ray Absorbtiometry scan, High-resolution peripheral quantitative computed tomography, Microindentation, Thermal perception thresholds, Nerve conduction studies
Medical subject headings
Diabetes Mellitus, Type 2, Bone Diseases, Osteoporosis, Diabetic Neuropathies

What participants receive

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

  • Dual Energy X-ray Absorbtiometry scanDiagnostic test

    Also called DXA

    Evaluation of body composition and bone mass density

  • High-resolution peripheral quantitative computed tomographyDiagnostic test

    Also called HR-pQCT

    High-resolution peripheral quantitative computed tomography (HR-pQCT) assesses both volumetric bone mineral density (vBMD) and trabecular and cortical microarchitecture.

  • MicroindentationDiagnostic test

    Also called Osteoprobe, ActiveLife, Santa Barbara, CA

    Measures Bone Material Strength Index (BMSi) of cortical bone.

  • Thermal perception thresholdsDiagnostic test

    Also called Quantitative Sensory Testing

    Heat and cold perception thresholds

  • Nerve conduction studiesDiagnostic test

    Also called NCStat-DPN-Check

    Nerve conduction and amplitude of sural nerve

  • Composite Autonomic Symptom Score 31Diagnostic test

    Also called COMPASS 31

    A validated self-assessment questionnaire quantifying the severity and distribution of autonomic symptoms across six domains (orthostatic intolerance, vasomotor, secretomotor, gastrointestinal, bladder and pupillomotor functions) by scoring 31 clinically selected questions

  • Skin biopsies with quantification of intra-epidermal nerve fibre densityDiagnostic test

    Also called PGP9.5, antibodies for subsets of ion-channels ect

    Skin biopsy

  • Perception Threshold TrackingDiagnostic test

    Also called PTT

    Transcutaneous stimulation of large and small nerve fibres using weak electrical currents

  • Assessment of cardiovascular autonomic neuropathyDiagnostic test

    Also called Vagus device, Medicus Engineering ApS, Aarhus, Denmark

    Electrocardiographic recordings at rest and during cardiovascular autonomic reflex tests.

  • Handgrip strengthDiagnostic test

    Also called Hydraulic dynamometer, Saehan Corporation, Gyungnam, South Korea

    Evaluation of muscle strength

  • Force plate platformDiagnostic test

    Also called Plux Biosignals, S.A, Arruda dos Vinhos, Portugal

    Evaluation of balance while standing still

  • Biospecimen collectionDiagnostic test

    Also called Blood samples, Urine samples

    Biochemistry including bone turnover markers, glycemic status, inflammation markers i.e

  • Isometric leg extension strengthDiagnostic test

    Also called EasyForce Digital Dynamometer

    Evaluation of muscle strength

  • Michigan Neuropathy Screening InstrumentDiagnostic test

    Also called MNSI

    MNSI is used to assess status of peripheral neuropathy. It includes two separate assessments: a 15-item self-administered questionnaire and a lower extremity examination that includes inspection and assessment of vibratory sensation and ankle reflexes.

Study groups in NCT05642143
Study groupRoleWhat they receive
T2D F-/N-Subjects with T2D and no previous history of any fractures or diabetic neuropathy (n=160)
Receives: Diagnostic Test: Dual Energy X-ray Absorbtiometry scan; Diagnostic Test: High-resolution peripheral quantitative computed tomography; Diagnostic Test: Microindentation; Diagnostic Test: Thermal perception thresholds; Diagnostic Test: Nerve conduction studies; Diagnostic Test: Composite Autonomic Symptom Score 31; Diagnostic Test: Skin biopsies with quantification of intra-epidermal nerve fibre density; Diagnostic Test: Perception Threshold Tracking; Diagnostic Test: Assessment of cardiovascular autonomic neuropathy; Diagnostic Test: Handgrip strength; Diagnostic Test: Force plate platform; Diagnostic Test: Biospecimen collection; Diagnostic Test: Isometric leg extension strength; Diagnostic Test: Michigan Neuropathy Screening Instrument
T2D F+Subjects with T2D with a previous history of a fracture(s) (any fracture, major osteoporotic fracture (MOF) and peripheral) (n=100)
Receives: Diagnostic Test: Dual Energy X-ray Absorbtiometry scan; Diagnostic Test: High-resolution peripheral quantitative computed tomography; Diagnostic Test: Microindentation; Diagnostic Test: Thermal perception thresholds; Diagnostic Test: Nerve conduction studies; Diagnostic Test: Composite Autonomic Symptom Score 31; Diagnostic Test: Perception Threshold Tracking; Diagnostic Test: Assessment of cardiovascular autonomic neuropathy; Diagnostic Test: Handgrip strength; Diagnostic Test: Force plate platform; Diagnostic Test: Biospecimen collection; Diagnostic Test: Isometric leg extension strength; Diagnostic Test: Michigan Neuropathy Screening Instrument
T2D N+Subjects with T2D matched by age and sex with severe peripheral (vibration perception threshold (VPT) > 50) or a history of autonomic neuropathy (n=40)
Receives: Diagnostic Test: Dual Energy X-ray Absorbtiometry scan; Diagnostic Test: High-resolution peripheral quantitative computed tomography; Diagnostic Test: Microindentation; Diagnostic Test: Thermal perception thresholds; Diagnostic Test: Nerve conduction studies; Diagnostic Test: Composite Autonomic Symptom Score 31; Diagnostic Test: Skin biopsies with quantification of intra-epidermal nerve fibre density; Diagnostic Test: Perception Threshold Tracking; Diagnostic Test: Assessment of cardiovascular autonomic neuropathy; Diagnostic Test: Handgrip strength; Diagnostic Test: Force plate platform; Diagnostic Test: Biospecimen collection; Diagnostic Test: Isometric leg extension strength; Diagnostic Test: Michigan Neuropathy Screening Instrument

What is being measured

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

  1. Evaluation of differences in bone microarchitecture between T2D patients with and without previous fractures assessed by HRpQCT.

    Bone microarchitecture is a composite outcome assessed by HRpQCT at radius and tibia: Total volumetric mineral density, Trabecular volumetric mineral density, Cortical volumetric mineral density, Trabecular number, Trabecular thickness, Cortical thickness, Trabecular separation, Cortical porosity, bone stiffness and failure load.

    Measured: Through study completion, estimated 3.5 years

  2. Differences in Bone material strength index (BMSi) between T2D patients with and without previous fractures measured by microindentation.

    Measured: Through study completion, estimated 3.5 years

  3. Evaluation of differences in bone turnover markers between T2D patients with and without previous fractures by biochemical analysis of different bone markers (CTX, P1NP, osteocalcin (OC), ucOC, sclerostin, osteoglycin and osteopontin).

    Measured: Through study completion, estimated 3.5 years

Secondary outcomes (10)
  1. The impact of autonomic neuropathy on bone microarchitecture in T2D assessed by HR-pQCT.

    Compare bone microarchitectural parameters (assessed by HR-pQCT) in T2D patients with and without autonomic neuropathy (assessed by CAN-score from Vagus™ device, COMPASS31-score, intraepidermal nerve fiber density, orthostatic BP and ECG).

    Measured: Through study completion, estimated 3.5 years

  2. The impact of autonomic neuropathy on bone material strength in T2D assessed by microindentation.

    Compare bone material strength (assessed by microindentation) in T2D patients with and without autonomic neuropathy (assessed by CAN-score from Vagus™ device, COMPASS31-score, intraepidermal nerve fiber density, orthostatic BP and ECG).

    Measured: Through study completion, estimated 3.5 years

  3. The impact of autonomic neuropathy on bone turnover markers in T2D.

    Compare bone turnover markers in T2D patients with and without autonomic neuropathy (assessed by CAN-score from Vagus™ device, COMPASS31-score, intraepidermal nerve fiber density, orthostatic BP and ECG)

    Measured: Through study completion, estimated 3.5 years

  4. The impact of peripheral neuropathy on bone microarchitecture in T2D assessed by HR-pQCT.

    Compare bone microarchitectural parameters (assessed by HR-pQCT) in T2D patients with and without peripheral neuropathy (assessed by MNSI, PTT, QST, sural nerve conduction study and intraepidermal nerve fiber density)

    Measured: Through study completion, estimated 3.5 years

  5. The impact of peripheral neuropathy on bone material strength in T2D assessed by microindentation.

    Compare bone material strength (assessed by microindentation) in T2D patients with and without peripheral neuropathy (assessed by MNSI, PTT, QST, sural nerve conduction study and intraepidermal nerve fiber density)

    Measured: Through study completion, estimated 3.5 years

  6. The impact of peripheral neuropathy on bone turnover markers in T2D.

    Compare bone turnover markers in T2D patients with and without peripheral neuropathy (assessed by MNSI, PTT, QST, sural nerve conduction study and intraepidermal nerve fiber density).

    Measured: Through study completion, estimated 3.5 years

  7. Compare postural control between T2D patients with and without fractures assessed by force platform.

    Measured: Through study completion, estimated 3.5 years

  8. Compare postural control between T2D patients with and without peripheral/autonomic neuropathy.

    Neuropathy assessed by PTT, QST, sural nerve conduction study, skin biopsies, COMPASS-31, MNSI and Vagus device. Postural control assessed by force platform.

    Measured: Through study completion, estimated 3.5 years

  9. Compare muscle mass and strength in T2D patients with and without fractures

    Compare muscle mass (assessed by DXA scan) and muscle strength (assessed by hand grip, leg extension strength and functional tests) in T2D patients with and without fractures.

    Measured: Through study completion, estimated 3.5 years

  10. Compare muscle mass and strength in T2D patients with and without neuropathy

    Compare muscle mass (assessed by DXA scan) and muscle strength (assessed by hand grip, leg extension strength and functional tests) in T2D patients with and without neuropathy (assessed by PTT, QST, sural nerve conduction study, skin biopsies, COMPASS-31, MNSI and Vagus device).

    Measured: Through study completion, estimated 3.5 years

Timeline

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

  1. First posted8 Dec 2022
  2. Study start24 Feb 2023
  3. Primary completionApr 2026 (estimated)
  4. Study completionApr 2026 (estimated)

Resources

More details

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

Study design
Study type
Observational
Observational model
Case-control
Time perspective
Cross-sectional
Enrolment
300 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05642143
Sponsor's protocol ID
N-20220038
Status last verified
Feb 2024
First submitted
4 Nov 2022
Last updated
7 Feb 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided: Potential analysis of skin biopsies in external lab

Questions about this trial

What is this clinical trial studying?

An observational study of Type 2 Diabetes and Bone Disease, run by Aalborg University Hospital at 1 site 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 10 inclusion and 16 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: status not confirmed, as of the sponsor's last update on 7 Feb 2024. 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 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. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

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

Contact Julie Lindgård Graversen, MD (97663651 ext. +45, j.lindgaard@rn.dk), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Evaluation of differences in bone microarchitecture between T2D patients with and without previous fractures assessed by HRpQCT. (time frame: Through study completion, estimated 3.5 years). 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 7 Feb 2024; AzTrials last refreshed its copy on 7 Nov 2026.

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