BMAC Nerve Allograft Study

July 15, 2020 updated by: Julia AV Nuelle, Brooke Army Medical Center

Clinical Evaluation of Decellularized Nerve Allograft With Autologous Bone Marrow Aspirate Concentrate (BMAC) to Improve Peripheral Nerve Repair and Functional Outcomes

This study is a prospective, multi-center, proof of principle, phase I human safety study evaluating the sequential treatments of the Avance Nerve Graft, a commercially available decellularized processed peripheral nerve allograft, with autologous Bone Marrow Aspirate Concentrate (BMAC), a source of stem cells, for the repair of peripheral nerve injuries up to 7 cm in length. The purpose of this study is to establish a knowledge product, evaluating the safety profile of the Avance Nerve Graft, followed by the application of BMAC to support further investment into the promising area of using stem cells in conjunction with scaffolds.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

15

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 Locations

  • United States
    • Maryland
      • Baltimore, Maryland, United States, 21218
        • Curtis National Hand Center at MedStar Union Memorial Hospital
      • Bethesda, Maryland, United States, 20889
        • Walter Reed National Military Medical Center
    • Texas
      • Fort Sam Houston, Texas, United States, 78234
        • San Antonio Military Medical Center

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

18 years to 74 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Male or non-pregnant female 18 to 74 years of age.
  • Undergoing peripheral nerve exploration or grafting with allograft in the upper extremity.
  • Subjects must be inpatients or scheduled for surgery at the time of study enrollment.
  • Has nerve conduction block injuries to the ulnar, median, radial or musculocutaneous nerve of either upper extremities that is less than two years from injury.
  • Be willing to undergo tension free end-to-end nerve graft coaptation on both the proximal and distal portion of the nerve gap with the Avance Nerve Graft.
  • Be willing to have bone marrow harvested from own body, concentrated, and applied to the site of nerve injury following the insertion of the Avance Nerve Graft.
  • Be willing to participate and able to comply with all aspects of the treatment and evaluation schedule over a 18-month duration.
  • Capable of giving their own consent to participate in the study, and willing to sign and date an IRB-approved written informed consent prior to initiation of any study procedures.
  • Nerve conduction injury affecting sensory and motor function or solely motor function in the upper extremity.
  • Nerve gaps following resection, up to 7 cm, inclusive.

Exclusion Criteria:

  • Subjects with Type 1 Diabetes Mellitus or Type 2 Diabetes Mellitus requiring regular insulin therapy.
  • Subjects who are undergoing or expected to undergo treatment with chemotherapy, radiation therapy, or other known treatment which affects the growth of neural and/or vascular system.
  • History of neurodegenerative disease, neuropathy, or diabetic neuropathy.
  • History of chronic ischemic condition of the upper extremity.
  • Cognitive limitation or mental illness preventing informed consent.
  • Nerve injuries >2 years post initial injury.
  • Any participant who at the discretion of the Investigator is not suitable for inclusion in the study.

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Avance Nerve Graft with autologous BMAC
The Avance Nerve Graft will be inserted in the area of nerve injury. Between 40 to 60 ml of Bone Marrow Aspirate from the anterior or posterior iliac crest of the pelvis will be harvested . Using SmartPrep centrifuge and 60 ml BMAC kit, 7 to 10 ml of final BMAC will be obtained.
Procedure: Avance Nerve Graft with Autologous BMAC
The Avance Nerve Graft will be inserted in the area of nerve injury. Between 40 to 60 ml of Bone Marrow Aspirate from the anterior or posterior iliac crest of the pelvis will be harvested. Using SmartPrep centrifuge and 60 ml BMAC kit, 7 to 10 ml of final BMAC will be obtained. Of the 7 to 10 ml of final BMAC that is yielded, half (3.5 to 5 ml) of the final concentrate, will be injected on top of the Avance Nerve Graft following coaptation. The second half (3.5 to 5 ml) of the final concentrate will be inserted into a sterile tube containing culture media and shipped overnight to Cleveland Clinic Lerner Research Institute for cell processing and colony assay to confirm that the BMAC indeed contains autologous bone marrow stem cells.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Comparison of the nature and incidence of AEs between the group of subjects receiving Avance Nerve Graft with BMAC and the historical data of nerve repairs with the Avance Nerve Graft.
Time Frame: 18 months
Long-term study associated AEs, such as infection, wound dehiscence, neuropathy, carpal tunnel syndrome, bleeding, seroma, and lymphocele will be captured and analyzed together with any change in incidence of listed AEs which may be precipitated by treatment. . AEs will be mapped to a MedDRA preferred term and system organ classification. The occurrence of the AEs will be summarized by repair type using MedDRA preferred terms, system organ classifications, and severity. All AEs will be listed for individual subjects showing both verbatim and preferred terms. Separate summaries of treatment-emergent SAEs and AEs related to repair will be generated.
18 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Test of non-inferiority and superiority of Avance Nerve Graft to historical nerve autograft scores with respect to Rosen-Lundborg using closed testing procedures
Time Frame: 18 months

Test of non-inferiority and superiority of Avance Nerve Graft to historical nerve autograft scores with respect to Rosen-Lundborg will be conducted using closed testing procedures. The hypotheses being tested are as follows:

H01: Δ ≤ -Δ0 vs. H11: Δ > -Δ0 H02: Δ = 0 vs. H12: Δ ≠ 0 where Δ = μC- μA is the difference between the mean Rosen-Lundborg Scores for the Avance Nerve Graft & BMAC (μA) and the mean Rosen-Lundborg scores for the historical autograft controls (μC), Δ0 is the non-inferiority margin 0.51. The null hypothesis of non-inferiority (H01) will be tested first and, if rejected, then the null hypothesis of superiority (H02) will be assessed. Given that the closed testing procedure is implemented, no adjustment for multiple testing will be required.
18 months
Test of non-inferiority of Avance Nerve Graft plus BMAC to Avance Nerve Graft recovery rates with respect to Rosen-Lundborg scores using closed testing procedures
Time Frame: 18 months

Test of non-inferiority of Avance Nerve Graft plus BMAC to Avance Nerve Graft recovery rates with respect to Rosen-Lundborg scores will be conducted using closed testing procedures. The hypothesis being tested is as follows:

H01: πA - πAB > Δ vs. H11: πA - πAB < Δ where πA is the recovery of Avance Nerve Graft and πAB is the recovery of Avance plus BMAC. Δ is the non-inferiority margin 25%
18 months

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Comparison of Motor Percent Recovery to Baseline Range of Motion
Time Frame: 18 months
Percent of motor recovery to baseline (defined as the difference in the measured assessment of the repaired nerve as compared with neighboring uninjured and/or contra-lateral side) based on passive range of motion, active range of motion and muscle strength (M0-M5) measurements
18 months
Comparison of Motor Percent Recovery to Baseline Grip Strength
Time Frame: 18 months
Percent of grip strength recovery to baseline (defined as the difference in the measured assessment of the repaired nerve as compared with neighboring uninjured and/or contra-lateral side) measured in kilograms using the Neurosensory & Motor Testing System AcroGrip Device
18 months
Comparison of Motor Percent Recovery to Baseline Pinch Strength
Time Frame: 18 months
Percent of pinch strength recovery to baseline (defined as the difference in the measured assessment of the repaired nerve as compared with neighboring uninjured and/or contra-lateral side) measured in kilograms using the Neurosensory & Motor Testing System AcroPinch Device
18 months
Time to Recovery
Time Frame: 18 months
18 months
Functional Outcomes through the assessment of Quick Disabilities of the Arm Shoulder and Hand (QuickDASH) questionnaire
Time Frame: 18 months
QuickDASH Disability/Symptom, Work Module, and Sports/Performing Arts Module Raw Score (out of 5) and Final Score (out of 100) will be recorded. Raw Scores will be calculated by: Raw Score = sum of n responses/n, where n is equal to number of completed items.The Final Score (out of 100) scaled from 0 indicating least disability to 100 indicating most disability will be calculated by: Final score = (Raw Score - 1) X 25
18 months
Functional Outcomes through the assessment of Patient-Reported Outcomes Measurement Information System (PROMIS)
Time Frame: 18 months
Raw and Standardized scores for Physical Function, Pain Intensity, Pain Interference, Fatigue, Sleep Disturbance and Behavior assessments will be recorded. Raw Scores will be calculated by: (Raw Sum X number of items listed in the domain)/Number of items that were actually answered for each assessment. The Raw Score is then systematically transformed to a standardized T-score using a conversion table in the PROMIS Scoring Manual. The T-score rescales the raw score into a standardized score with a mean of 50 and a standard deviation of 10. The higher the T-score, the more it represents the concept being measured
18 months
Motor and Sensory Nerve Conduction Studies (Nerve Conduction Velocity (NCV) and/or Electromyography (EMG))
Time Frame: 12 and 18 month

NCV and EMG testing will be conducted on the target muscle group to assess rate and level of motor and sensory reinnervation in the 12 month and 18 month

  • Rate of Reinnervation (Motor and Sensory Domain)
  • Level of Reinnervation (Motor and Sensory Domain)
12 and 18 month
Comparison of Sensory Percent Recovery to Baseline
Time Frame: 18 months
Percent of sensory recovery to baseline (defined as the difference in the measured assessment of the repaired nerve as compared with neighboring uninjured and/or contra-lateral side) using the Neurosensory & Motor Testing System (NSMTS) Pressure Specified Sensory Device. 1 Point Static Discrimination, 1 Point Static Moving Discrimination, 2 Point Static Discrimination and 2 Point Moving Discrimination will be measured by prong pressure (g/mm^2)
18 months

Collaborators and Investigators

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

Sponsor

Brooke Army Medical Center

Collaborators

Walter Reed National Military Medical Center
Curtis National Hand Center at MedStar Union Memorial Hospital
Cleveland Clinic Lerner Research Institute

Investigators

  • Principal Investigator: Julia Nuelle, MD, Brooke Army Medical Center
  • Principal Investigator: Leon J Nesti, MD/PhD, Walter Reed National Military Medical Center
  • Principal Investigator: Kenneth Means, MD, Curtis Hand Center at MedStar Union Memorial Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

August 22, 2017

Primary Completion (Anticipated)

November 30, 2020

Study Completion (Anticipated)

June 1, 2021

Study Registration Dates

First Submitted

May 20, 2019

First Submitted That Met QC Criteria

May 23, 2019

First Posted (Actual)

May 28, 2019

Study Record Updates

Last Update Posted (Actual)

July 16, 2020

Last Update Submitted That Met QC Criteria

July 15, 2020

Last Verified

July 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • C.2017.074

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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