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Clinical Trial Evaluating the Safety and Efficacy of the Use of Chitosan Gel in Patients With Chronic Wounds (CHITOWOUND)

Primary Purpose

Diabetic Foot Ulcer

Status
Terminated
Phase
Not Applicable
Locations
International
Study Type
Interventional
Intervention
ChitoCare gel
Placebo gel
Sponsored by
Primex ehf
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Diabetic Foot Ulcer focused on measuring Chronic wounds, Diabetic foot ulcer, Chitosan gel

Eligibility Criteria

18 Years - undefined (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • Written informed consent must be given
  • Patient ≥ 18 years old
  • Diagnosed with type I or type II diabetes mellitus
  • Glycosylated haemoglobin, HbA1c, ≤ 12%
  • Presence of diabetic foot ulcer or an amputation wound that meets following criteria:

    1. Size of the wound 0,5 - 12 cm^2
    2. Wagner grade I or II
    3. Wound is not infected
    4. Wound present for at least 4 weeks
  • If multiple wounds are present, the biggest wound fitting the criteria is selected and the distance from other wounds must be at least 2 cm
  • If there is an amputation wound present, it can be used for the purpose of this study if it fits the rest of the criteria
  • Adequate perfusion (good, strong foot pulses). If foot pulses are weak, evaluation of perfusion pressures with Doppler ultrasound is performed.
  • Able to understand and comply with the requirements of the trial

Exclusion Criteria:

  • Known history of alcohol or drug abuse
  • Use of any antibiotic medication within the last 7 days prior to the first application of study product
  • Patients presenting with Wagner Grade III or higher ulcer
  • Patients with serious concomitant disease (cancer, heart failure ( NYHA class IV), severe anemia (Hb<100 g/L), neoplasia)
  • Any significant condition that may preclude the participant from the study (e.g. severe depression or psychiatric illness)
  • Patients that will require surgical procedure to treat their ischemic condition on the limb where the wound is present as assessed by the doctor
  • Excessive lymphedema that could interfere with wound healing (if there is mild edema treated with compression therapy the patient can be included)
  • Patients diagnosed with autoimmune connective tissues diseases
  • Previous treatment under this clinical protocol
  • Participation in another clinical trial up to 30 days before the randomization visit.
  • Receiving or scheduled to receive a medication or treatment which, in the opinion of the investigator, was known to interfere with, or affect the rate and quality of wound healing
  • Medical condition likely to require systemic corticosteroids during the study period
  • Allergic to shellfish, chitosan or one of ChitoCare product compounds
  • Immobile patients
  • Pregnant and lactating women
  • Significant increase in wound healing during run-in period (reduction of wound size area ≥ 40%)
  • BMI > 39 kg/m2

Sites / Locations

  • University Clinic Vuk Vrhovac
  • General Hospital Celje
  • Clinic Golnik - Diabetic Clinic Kranj
  • University Hospital Center Ljubljana
  • General Hospital Murska Sobota

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

Arm A (Experimental group

Arm B (Control group)

Arm Description

ChitoCare gel administered topically 2-3 times a week or more (accordingly with the frequency of dressing change)

Placebo gel administered topically 2-3 times a week or more (accordingly with the frequency of dressing change)

Outcomes

Primary Outcome Measures

Difference in proportions of ulcers completely healed for experimental group compared to control group.
Relative healing rate (ratio between the proportion of ulcers healed for experimental group to proportion of ulcers healed in control group (= healing rate)).

Secondary Outcome Measures

Difference in proportion of ulcers completely healed for experimental group compared to the control group
Relative healing rate (ratio between the proportion of ulcers healed for experimental group to the proportion of ulcers healed in control group)
Difference in reduction of diabetic ulcer wound size for experimental group compared to control group.
Relative reduction of wound surface area.
Difference in time to complete healing for experimental group compared to control group.
Hazard ratio for time to complete healing (experimental group vs. control group)
Difference in improved quality of life for experimental group compared to control group.
The relative improvement of quality of life from the baseline value using the 36-Item Short Form Survey (SF-36) questionnaire (RAND Corporation).
Difference in improved state of the wound for experimental group compared to control group using Bates-Jensen wound assessment tool (BWAT).
The relative improvement of the state of the wound using Bates-Jensen wound assessment tool (BWAT).
Difference in improved state of the wound for experimental group compared to control group according to Wagner Ulcer Classification.
The relative improvement of the state of the wound using Wagner Ulcer Classification.
Secondary infections that may occur during the study for experimental group compared to control group.
Occurrence of secondary infection.
Incidence of treatment related adverse events for experimental group compared to control group.
The incidence of treatment related adverse events.
To track diabetic ulcer recurrence for experimental group compared to control group in patients whose wound completely healed.
The incidence of diabetic ulcer recurrence.

Full Information

First Posted
November 13, 2019
Last Updated
November 11, 2020
Sponsor
Primex ehf
Collaborators
Vizera d.o.o., University of Ljubljana
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1. Study Identification

Unique Protocol Identification Number
NCT04178525
Brief Title
Clinical Trial Evaluating the Safety and Efficacy of the Use of Chitosan Gel in Patients With Chronic Wounds
Acronym
CHITOWOUND
Official Title
A Randomized, Parallel, Double Blind, Placebo Controlled, Multicentre, Two Arms Clinical Trial Evaluating the Safety and Efficacy of the Use of Chitosan Gel in Patients With Chronic Wounds
Study Type
Interventional

2. Study Status

Record Verification Date
November 2020
Overall Recruitment Status
Terminated
Why Stopped
COVID-19 restrictions
Study Start Date
August 2, 2018 (Actual)
Primary Completion Date
September 22, 2020 (Actual)
Study Completion Date
September 22, 2020 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Primex ehf
Collaborators
Vizera d.o.o., University of Ljubljana

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
Type 1 and Type 2 diabetic patients with diabetic foot ulcer will be recruited and screened for participation in the study. Eligible patients will be randomized 1:1 to either experimental or control group and undergo 10-weeks of treatment (as an addition to standard care) and 4 weeks of follow-up to evaluate the effect of chitosan gel on chronic wound (diabetic foot ulcer) healing.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Diabetic Foot Ulcer
Keywords
Chronic wounds, Diabetic foot ulcer, Chitosan gel

7. Study Design

Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Model Description
Randomization will be applied at a 1:1 ratio on study level, and at each individual site. Sixty (60) patients will be included in the study, 30 in each arm.
Masking
ParticipantInvestigator
Masking Description
The patients, investigators and other personnel involved in the study will be blinded with respect to the study treatment of the patient, until the end of the study.
Allocation
Randomized
Enrollment
46 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Arm A (Experimental group
Arm Type
Experimental
Arm Description
ChitoCare gel administered topically 2-3 times a week or more (accordingly with the frequency of dressing change)
Arm Title
Arm B (Control group)
Arm Type
Placebo Comparator
Arm Description
Placebo gel administered topically 2-3 times a week or more (accordingly with the frequency of dressing change)
Intervention Type
Device
Intervention Name(s)
ChitoCare gel
Intervention Description
ChitoCare gel is based on chitosan and used as an addition to standard care, accordingly with dressing change for 10 weeks.
Intervention Type
Device
Intervention Name(s)
Placebo gel
Intervention Description
Placebo gel is used as an addition to standard care, accordingly with dressing change for 10 weeks.
Primary Outcome Measure Information:
Title
Difference in proportions of ulcers completely healed for experimental group compared to control group.
Description
Relative healing rate (ratio between the proportion of ulcers healed for experimental group to proportion of ulcers healed in control group (= healing rate)).
Time Frame
10 weeks
Secondary Outcome Measure Information:
Title
Difference in proportion of ulcers completely healed for experimental group compared to the control group
Description
Relative healing rate (ratio between the proportion of ulcers healed for experimental group to the proportion of ulcers healed in control group)
Time Frame
2, 4, 6 and 8 weeks
Title
Difference in reduction of diabetic ulcer wound size for experimental group compared to control group.
Description
Relative reduction of wound surface area.
Time Frame
2, 4, 6, 8, 10 and 14 weeks
Title
Difference in time to complete healing for experimental group compared to control group.
Description
Hazard ratio for time to complete healing (experimental group vs. control group)
Time Frame
Baseline to 14 weeks (whole study duration)
Title
Difference in improved quality of life for experimental group compared to control group.
Description
The relative improvement of quality of life from the baseline value using the 36-Item Short Form Survey (SF-36) questionnaire (RAND Corporation).
Time Frame
4 weeks and 10 weeks
Title
Difference in improved state of the wound for experimental group compared to control group using Bates-Jensen wound assessment tool (BWAT).
Description
The relative improvement of the state of the wound using Bates-Jensen wound assessment tool (BWAT).
Time Frame
2, 4, 6, 8, 10 and 14 weeks
Title
Difference in improved state of the wound for experimental group compared to control group according to Wagner Ulcer Classification.
Description
The relative improvement of the state of the wound using Wagner Ulcer Classification.
Time Frame
2, 4, 6, 8, 10 and 14 weeks
Title
Secondary infections that may occur during the study for experimental group compared to control group.
Description
Occurrence of secondary infection.
Time Frame
Baseline to 14 weeks (whole study duration)
Title
Incidence of treatment related adverse events for experimental group compared to control group.
Description
The incidence of treatment related adverse events.
Time Frame
Baseline to 14 weeks (whole study duration)
Title
To track diabetic ulcer recurrence for experimental group compared to control group in patients whose wound completely healed.
Description
The incidence of diabetic ulcer recurrence.
Time Frame
Baseline to 14 weeks (whole study duration)

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Written informed consent must be given Patient ≥ 18 years old Diagnosed with type I or type II diabetes mellitus Glycosylated haemoglobin, HbA1c, ≤ 12% Presence of diabetic foot ulcer or an amputation wound that meets following criteria: Size of the wound 0,5 - 12 cm^2 Wagner grade I or II Wound is not infected Wound present for at least 4 weeks If multiple wounds are present, the biggest wound fitting the criteria is selected and the distance from other wounds must be at least 2 cm If there is an amputation wound present, it can be used for the purpose of this study if it fits the rest of the criteria Adequate perfusion (good, strong foot pulses). If foot pulses are weak, evaluation of perfusion pressures with Doppler ultrasound is performed. Able to understand and comply with the requirements of the trial Exclusion Criteria: Known history of alcohol or drug abuse Use of any antibiotic medication within the last 7 days prior to the first application of study product Patients presenting with Wagner Grade III or higher ulcer Patients with serious concomitant disease (cancer, heart failure ( NYHA class IV), severe anemia (Hb<100 g/L), neoplasia) Any significant condition that may preclude the participant from the study (e.g. severe depression or psychiatric illness) Patients that will require surgical procedure to treat their ischemic condition on the limb where the wound is present as assessed by the doctor Excessive lymphedema that could interfere with wound healing (if there is mild edema treated with compression therapy the patient can be included) Patients diagnosed with autoimmune connective tissues diseases Previous treatment under this clinical protocol Participation in another clinical trial up to 30 days before the randomization visit. Receiving or scheduled to receive a medication or treatment which, in the opinion of the investigator, was known to interfere with, or affect the rate and quality of wound healing Medical condition likely to require systemic corticosteroids during the study period Allergic to shellfish, chitosan or one of ChitoCare product compounds Immobile patients Pregnant and lactating women Significant increase in wound healing during run-in period (reduction of wound size area ≥ 40%) BMI > 39 kg/m2
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Maja Navodnik Preložnik, MD
Organizational Affiliation
General Hospital Celje, Slovenia
Official's Role
Principal Investigator
Facility Information:
Facility Name
University Clinic Vuk Vrhovac
City
Zagreb
ZIP/Postal Code
10000
Country
Croatia
Facility Name
General Hospital Celje
City
Celje
ZIP/Postal Code
3000
Country
Slovenia
Facility Name
Clinic Golnik - Diabetic Clinic Kranj
City
Kranj
ZIP/Postal Code
4000
Country
Slovenia
Facility Name
University Hospital Center Ljubljana
City
Ljubljana
ZIP/Postal Code
1000
Country
Slovenia
Facility Name
General Hospital Murska Sobota
City
Murska Sobota
ZIP/Postal Code
9000
Country
Slovenia

12. IPD Sharing Statement

Plan to Share IPD
No

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Clinical Trial Evaluating the Safety and Efficacy of the Use of Chitosan Gel in Patients With Chronic Wounds

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