Bone Marrow Mononuclear Cells vs Mesenchymal Stem Cells in Diabetic Patients With Chronic Limb Ischemia

November 20, 2022 updated by: Martha Ligia Arango Rodríguez, Fundación Oftalmológica de Santander Clínica Carlos Ardila Lulle

Comparison of the Therapeutic Potential of Autologous Bone Marrow Mononuclear Cells Versus Allogenic Wharton Jelly-derived Mesenchymal Stem Cells in Diabetic Patients With Chronic Limb-threatening Ischemia

Patients in the severe stages of Chronic limb-threatening ischemia (CLTI) are prone to amputation and death, leading to poor quality of life and a great socioeconomic burden.

There is an urgent need to develop an effective therapeutic strategy to treat this disease. In this context, autologous bone marrow mononuclear cells (BM-MNC) and allogeneic mesenchymal stem cells derived from different sources have emerged as promising therapeutic approaches for this condition.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Comparison of the therapeutic potential of BM-MNC vs. allogeneic Wharton jelly-derived mesenchymal stem cells (allo-WJ-MSCs) in diabetic patients with CLTI.

Twenty-four type 2 diabetic patients in the most severe stages of the CLTI (category 4 or 5 in Rutherford's classification and transcutaneous oxygen pressure (TcPO2) below 30 mm Hg were enrolled and randomized to receive 15 injections of (i) BM-MNC (7.197x106 ± 2.984 x106 cells/mL each with 2% of autologous serum) (n=7), (ii) allo-WJ-MSCs (1.333 x106 cells/mL each with 5% of human serum albumin serum) (n=7) or (iii) placebo solution (1 mL saline solution with 2% of autologous serum) (n=10), which were administered into the periadventitial arteries.

The follow-up visits were at months 1, 3, 6, and 12, to evaluate the following parameters:

(i) Rutherford classification (0 to 6) (ii) TcPO2 (mmHg) (iii) Wound closure (area cm2) (iv) pain (visual analogue scale (0-10) (v) pain-free walking distance (m) (vi) revascularization and limb-survival proportion during follow-up (vii) the quality of life (EQ-5D questionnaire).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
24

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

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

Study Locations

  • Colombia
      • Bucaramanga, Colombia
        • Fundación Oftalmológica de Santander (FOSCAL)

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

40 years to 85 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adult male or female, 40 years of age or over (until 85 years old)
  • TcPO2 ≤ 30 mmHg.
  • Diagnosis of diabetes.
  • Patients with signs of critical ischemia such as (i) ulcer that does not heal, (ii) necrosis or loss of tissue, (iii) pain at rest, and (iv) intermittent claudication.
  • Basal Rutherford classification stage 3 to 5.
  • Non-revascularizable patients due to comorbidities and/or anatomy.
  • Patients that despite revascularization (vascular surgery), have adequate distal beds to perfuse the limb.
  • Ankle/brachial index less than 0.4.
  • Stenosis or occlusion of the infrapatellar arteries.

Exclusion Criteria:

  • Participants that do not sign the informed consent.
  • Presence of osteomyelitis.
  • Hemodynamic instability (MAP<65 mmHg or vasopressor requirement).
  • Any acute systemic infectious disease process.
  • Severe sepsis.
  • Uncontrolled coagulopathy.
  • Condition of cancer.
  • Use of immunosuppressive or cytotoxic drugs
  • Alterations of the bone marrow that do not allow the adequate extraction of the components to be used as: acute leukemia, chronic leukemia, marrow aplasia, myelodysplastic syndrome, and myelophthisis.
  • Contraindication of sedation for bone marrow aspirate.
  • Patients who have suffered in a period < six months of myocardial infarction, disease cerebrovascular or coronary intervention.
  • Patients with liver failure indicated by serum transaminases (aspartate aminotransferase and alanine aminotransferase), with values twice the normal limit.
  • Any acute or chronic contagious disease including hepatitis B, hepatitis C, and HIV.
  • Any other comorbidity that the treating vascular surgeon considers as a contraindication to cell treatments.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Placebo group
Placebo group (n=10), which consisted of 15 injections of 1 mL of vehicle (1 mL saline solution with 2% of autologous serum) on periadventitial arteries in one dose at day 0.
Biological: Cell-based therapy
One dose of auto-BM-MNC, one dose of allo-WJ-MSCs, or one dose of placebo solution (saline solution with 2% of autologous serum), were periadventitial arteries administration in CTLI patients.
Experimental: Auto-BM-MNC
Auto-BM-MNC (n=7) were obtained from diabetic patients. Fifteen injections of 7.197x106 ± 2.984x106 cells/mL each with 2% of autologous serum were periadventitial arteries administrated in one dose at day 0.
Biological: Cell-based therapy
One dose of auto-BM-MNC, one dose of allo-WJ-MSCs, or one dose of placebo solution (saline solution with 2% of autologous serum), were periadventitial arteries administration in CTLI patients.
Experimental: Allo-WJ-MSCs
Allo-WJ-MSCs (n=7) were obtained from culturing the WJ from healthy cordon umbilical donors unrelated to the patient. Fifteen injections of 1.333x106 cells/mL each with 5% of human serum albumin serum were periadventitial arteries administrated in one dose at day 0.
Biological: Cell-based therapy
One dose of auto-BM-MNC, one dose of allo-WJ-MSCs, or one dose of placebo solution (saline solution with 2% of autologous serum), were periadventitial arteries administration in CTLI patients.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Safety profile: (adverse events (AEs) and serious AEs)
Time Frame: 12 months

AEs: (i) local toxicity, including signs of local inflammation (swelling, warmth, impairment of function), worsening of ulcer, new ulcer, or hematomas after auto-BM-MNC or allo-WJ-MSCs administration.

(ii) systemic toxicity as fever, allergies. (iii) maximum grade toxicity for tissue.
12 months
Safety profile
Time Frame: 12 months
Serious AEs: hospitalization, malignancy, amputation, persistent or significant disability, or death.
12 months
Efficacy profile: Rutherford's classification
Time Frame: 12 months
0 to 6
12 months
TcPO2
Time Frame: 12 months
mmHg
12 months
Efficacy profile: Visual Analogue Scale pain
Time Frame: 12 months
0 to10
12 months
Efficacy profile: Pain-free walking distance
Time Frame: 12 months
meters
12 months
Efficacy profile: Wound closure
Time Frame: 12 months
cm2
12 months
Efficacy profile: Revascularization
Time Frame: 12 months
Percentage
12 months
Efficacy profile: Limb survival proportion
Time Frame: 12 months
Percentage
12 months
Efficacy profile: Quality of life
Time Frame: 12 months
EQ-5D questionnaire
12 months

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Fundación Oftalmológica de Santander Clínica Carlos Ardila Lulle

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Martha L Arango, PhD, Fundación Oftalmológica de Santander Clínica Carlos Ardila Lulle

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2019

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 30, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 28, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 30, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 20, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 30, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 30, 2022

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 20, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CLTI 01

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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