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CompletedNCT00935051DIAB-MMP2Updated Dec 18, 2013

Matrix Metalloproteinase-1/Tissue Inhibitor of Metalloproteinase-1 (MMP-1/TIMP-1) Ratio and Diabetic Foot Ulcers

An Early Phase 1 interventional study of Picture + MMPs and TIMP1 at week 0 and week 4 in Diabetic Foot Ulcer, sponsored by University Hospital, Grenoble. Completed at 2 sites in France. Open to participants aged 18 Years to 40 Years. Per ClinicalTrials.gov, last updated 2013-12-18.

Sponsored by University Hospital, Grenoble · Early Phase 1, Interventional, and Basic science

Phase
Early Phase 1
Study type
Interventional
Enrollment
59
Allocation
Not applicable
Ages
18 Years to 40 Years
Sex
All
01

Study summary

The primary objective of this study is to assess the sensitivity and specificity of a MMP-1/TIMP-1 ratio equal to 0.24 at study entry to predict wound healing at 12 weeks' follow up visit.

Read the detailed description

This monocentric, prospective, non-randomized study assesses the amount of the main metalloproteinases (MMP1, MMP9, MMP13) and their inhibitor TIMP-1 in wound fluid from diabetic foot ulcers.

It aims at demonstrating whether a MMP-1/TIMP-1 ratio equal to 0.24 at study entry can predict wound healing 12 weeks later. All patients will receive the same treatment according to our local protocol. The difference with standard care will be a sample of wound fluid at week 0 and week 4 and a numeric photograph for wound area measurement at week 0, week 4 and week 12.

The main outcome measurement is the percent change of wound area between week 0 and week 12 Secondary objectives include the evaluation of a MMP-1/TIMP-1 ratio equal to 0.4 and the search for confounding factors. A correlation between MMP-9, MMP-13 and wound healing will also be investigated.

02

Conditions studied

  • Diabetic Foot Ulcer

Keywords

  • type 1 diabetes
  • type 2 diabetes
  • Diabetic foot ulcer
03

In context

Diabetic Foot

1,077 studies on the registry are indexed under Diabetic Foot; 224 are open to participants now.

This study's enrollment of 59 is close to the median of 60 across 845 interventional studies indexed under Diabetic Foot.

Browse Diabetic Foot studies →

Lead sponsor

University Hospital, Grenoble is the lead sponsor of 835 studies on the registry; 207 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 40 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with type 1 or type 2 diabetes
  • Age over 40
  • Chronic diabetic foot ulcer (duration over 30 days)
  • Grade 1 to 3, stage A and C according to the University of Texas Wound Classification, except stage B and D
  • Wound area over 0.5 cm²
  • Social Security membership or benefit from Social Security
  • Informed consent, with a signed and approved form
  • Possibility to have clinical follow-up and compliance during 3 months

Exclusion criteria

Exclusion Criteria:

  • Urgent need for locoregional surgery
  • Clinical criteria for infection, defined by the presence of pus or/and at least 2 local signs among the following: heat, erythema, lymphangitis, lymphadenopathy, oedema, pain
  • Other pathology that could interfere with the healing process (vasculitis, connectivitis, dysimmunity, immunosuppressive treatment or corticoids, ongoing radiotherapy or chemotherapy )
  • Any severe pathology that would constitute a contra-indication to the patient's inclusion
  • Ongoing therapeutic research protocol
  • Underage patient, major patient under guardianship or protected by the Law
  • Pregnant, parturient or breastfeeding woman
  • Person with no freedom (prisoner), person in an emergency situation, person hospitalized without consent and not protected by the Law
05

Study design

Phase
Early Phase 1
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
59 participants (actual)

Study arms

  • Experimental
    Arm 1

    There is only one group of patients. Thus there is only one arm. Sample of wound fluid will be collected using a non traumatic procedure at week 0 and week 4. A numeric photograph of the wound will be taken at week 0, week 4 and week 12.

    Other: Picture + MMPs and TIMP1 at week 0 and week 4

Interventions

  • OtherPicture + MMPs and TIMP1 at week 0 and week 4

    Sample of wound fluid will be collected using a non traumatic procedure at week 0 and week 4. This will allow to assess the level of MMP9, MMP13, MMP1 and TIMP1. A numeric photograph of the wound will be taken at week 0, week 4 and week 12 in order to assess wound area.

06

What researchers measure

Primary outcomes

  1. MMP-1/TIMP-1 ratio at Week 0 assessed by ELISA and percent change in wound area of diabetic foot ulcer between week 0, week 4 and week 12

    Time frame: Week 0, week 4 and week 12

Secondary outcomes

  1. Evaluation of a MMP-1/TIMP-1 ratio = 0.4 at Week 0 as a predictor of wound healing at week 12

    Time frame: Week 0, week 4 and week 12

  2. Recognized clinical prognostic factors such as wound duration, wound area, wound depth and other possible confounding factors affecting the validity of the MMP-1/TIMP-1 ratio

    Time frame: Week 0 to Week 12

  3. Correlation between MMP9, MMP13, MMP9/TIMP1 and MMP13/ TIMP1 ratios and wound healing expressed by the percent change in wound area between week 0, week 4 and week 12.

    Time frame: Week 0 and week 4

07

Study locations

2 sites
  • Diabetology department
    Grenoble, Isere 38043, France
  • Service de Diabétologie du Pr Halimi, CHU Grenoble
    Grenoble, 38043, France
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 18, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00935051
Responsible party
Sponsor
First posted
Jul 8, 2009
Start date
May 2009
Primary completion
Jul 2013
Completion
Nov 2013
Last update
Dec 18, 2013

Study contacts

Pierre-Yves Benhamou, PhD
study director · University Hospital, Grenoble

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2013. You cannot join it, but the record below documents what was studied.

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