Link Between ASCorbemia Level and Osteoporosis (ASCO)

June 16, 2026 updated by: Centre Hospitalier Universitaire de Nice

ASCO Study: Link Between ASCorbemia Level and Osteoporosis

This monocentric observational study aims to evaluate the association between plasma vitamin C levels (ascorbemia) and the presence of osteoporotic vertebral fractures in patients with osteoporosis. Forty participants will be enrolled at the Rheumatology

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

  1. . Patients in group A or B will be seen in consultation or admitted by one of the medical team members among the investigators.
  2. . After signing the informed consent and checking the inclusion criteria, the blood sample will be taken by a member of the nursing team of the department.
  3. . The collection tube will then be placed in an opaque cooler, refrigerated with ice, and transported to the university hospital's biochemistry lab (routine assay).

  4. . Next, the collection of planned clinical and paraclinical data:

    • Diet and risk factors for vitamin C deficiency:
    • Demographic data - osteoporosis risk factors
    • Bone status
  5. . Once all the data is collected, we will carry out the statistical analyses, then draft the article, and finally publish it.

Study Type

Interventional

Enrollment (Estimated)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • France
    • France
      • Nice, France, France, 06000

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Men aged 50 yars or older ;
  • Postmenopausal women ;
  • Afilliated with a health insurance and system ;
  • Written informed consent obtained.
  • Group 1 : Clincal osteoporotic vertebral fracture confirmed by imaging within the previous month ; Followed in the Rheumatology department for management of vertebral fracture.
  • Group 2 : Densitometric osteoporosis (T-score ≤ -2.5) ; No history of severe osteoporotic fracture ; No history of clinical or morphometric vertebral fracture.

Exclusion Criteria:

  • Legal protection measure (guardianship, curatorship);
  • inability to provide informed consent ;
  • refusal to participate ;
  • Vertebral fracture related to tumor,
  • infection, trauma or non osteoporotic causes ;
  • asymptomatic vertebral fracture discovered incidentally ;
  • Severe densitometric osteoporosis for group 2 ;
  • Previous severe osteoporotic fracture for group B.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Osteoporosis with vertebral fracture
Blood sampling for measurement of plasma vitamin C concentration (ascorbemia) in patient with osteoporosis and recent clincal vertebral fracture.
Diagnostic test: Plasma vitamin C assessment
Blood sampling for measurement of plasma vitamin C concentration (ascorbemia) in patient of the study
Experimental: Non-severe osteoporosis
Blood sampling for measurement of plasma vitamin C concentration (ascorbemia) in patient with osteoporosis without vertebral fracture.
Diagnostic test: Plasma vitamin C assessment
Blood sampling for measurement of plasma vitamin C concentration (ascorbemia) in patient of the study

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Plasma vitamin C concentration
Time Frame: day 1
Comparison of plasma vitamin C concentration (ascorbemia, µmol/L) between patients with osteoporotic vertebral fractures and patients with osteoporosis without vertebral fracture.
day 1

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Association between plasma vitamin C level and number of vertebral fractures
Time Frame: day 1
Assessment of the relationship between plasma vitamin C concentration and the number of osteoporotic vertebral fractures
day 1
Association between plasma vitamin C level and lumbar bone mineral density
Time Frame: day 1
Assessment of the relationship between plasma vitamin C concentration and lumbar spine bone mineral density measured by DXA.
day 1

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire de Nice

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

July 1, 2026

Primary Completion (Estimated)

January 1, 2028

Study Completion (Estimated)

January 1, 2028

Study Registration Dates

First Submitted

June 16, 2026

First Submitted That Met QC Criteria

June 16, 2026

First Posted (Actual)

June 22, 2026

Study Record Updates

Last Update Posted (Actual)

June 22, 2026

Last Update Submitted That Met QC Criteria

June 16, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 25-AOI-08
  • IDRCB (Other Identifier: 2026-A00644-47)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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