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Safety of Autologous Human Schwann Cells (ahSC) in Subjects With Subacute SCI

This study is currently recruiting participants. (see Contacts and Locations)
Verified June 2014 by University of Miami
Sponsor:
Collaborator:
The Miami Project to Cure Paralysis
Information provided by (Responsible Party):
Allan D. Levi, MD, PhD, University of Miami
ClinicalTrials.gov Identifier:
NCT01739023
First received: November 28, 2012
Last updated: June 10, 2014
Last verified: June 2014
  Purpose

The purpose of this study is to assess the safety of autologous human Schwann cells (ahSC) transplantation in subjects with subacute SCI.

For humans with subacute SCI, we hypothesize that axons might show improved function if myelin repair is induced with the implantation of ahSC. In addition spinal cord cavitation may be reduced, and neural sprouting and plasticity may be enhanced via neurotrophic effects.


Condition Intervention Phase
Spinal Cord Injury
Paraplegia
Biological: Autologous Human Schwann Cells
Phase 1

Study Type: Interventional
Study Design: Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: The Safety of Autologous Human Schwann Cells (ahSC) in Subjects With Subacute Spinal Cord Injury (SCI)

Resource links provided by NLM:


Further study details as provided by University of Miami:

Primary Outcome Measures:
  • International Standards of Neurological Classification for Spinal Cord Injury [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]
  • MRI of spinal cord [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]
  • Neuropathic pain [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • Spinal Cord Independence Measure III [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • Functional Independence Measure [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • Motor Evoked Potentials [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]
  • Somatosensory Evoked Potentials [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]
  • Autonomic - Head-up Tilt [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • Autonomic - Sympathetic Skin Response [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • ISCI Basic Bowel Dataset [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • ISCI Basic Lower Urinary Tract Dataset [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • SF-12 [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • Patient Global Impression of Change [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: No ]
  • Modified Ashworth Scale [ Time Frame: Change from Baseline at 12 months ] [ Designated as safety issue: Yes ]

Estimated Enrollment: 8
Study Start Date: November 2012
Estimated Study Completion Date: November 2015
Estimated Primary Completion Date: November 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Autologous Human Schwann Cells Biological: Autologous Human Schwann Cells
Schwann cells harvested from the sural nerve of the participant will be autologously transplanted into the epicenter of the participant's spinal cord injury.

Detailed Description:

Schwann cells are excellent candidates for transplantation into humans with SCI. Large numbers of ahSC can be derived for autologous implantation after a minor surgery for peripheral nerve harvesting, and purification and expansion of the cells in culture. Autologous cells offer important safety advantages that include no need for immune suppression, minimal risk of disease transfer, and a low risk of tumorigenicity.

Since 1990, scientists at the Miami Project to Cure Paralysis have generated extensive preclinical data suggesting Schwann cell transplantations are successful in rodents with SCI. The most recent work has focused on contusive injury models that are relevant to human injury. They have also been largely responsible for developing an efficient method for procuring large, essentially pure populations of human Schwann cells from adult peripheral nerve.

The rationale for implantation of ahSC in people with acute SCI is based on the evidence that Schwann cells are neuroprotective and are capable of myelinating axons. Using mitogen expanded human Schwann cells in SCID mice and athymic female nude rats demonstrated that human Schwann cells can survive and are capable of enhancing axonal regeneration and forming myelin after transplantation in animals with sciatic nerve transection or thoracic spinal cord transection. The proposed clinical trial will advance knowledge about the safety and feasibility of a cell-based treatment strategy for human SCI.

This Phase 1 clinical trial will employ an open label, unblinded, nonrandomized and non-placebo controlled dose-escalation design to evaluate the safety of transplantation of ahSC transplantation in subjects with subacute SCI.

A sural nerve harvest will occur within 30 days post-injury. Standard-of-care medical treatment and rehabilitation will proceed while the cells are being processed in a cGMP facility. No later than 72 days post-injury, the ahSC product will be administered via a single injection into the cavity of the spinal cord lesion.

Safety and efficacy assessments will be performed at week 1 and 2 post-transplantation and 2, 6, and 12 months post-transplantation.

  Eligibility

Ages Eligible for Study:   18 Years to 60 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • 1) Persons with traumatic SCI that occurred within the previous 30 days.
  • 2) Between the ages of 18 and 60 at last birthday.
  • 3) SCI at a thoracic level between T3-T11 as defined by MRI and the most caudal level of intact motor and sensory function on the International Standards for Neurological Classification of Spinal Cord Injury (ISNCSCI).
  • 4) Acute SCI with ISNCSCI grade A impairment at time of enrollment.

Exclusion Criteria:

  • 1) Persons with penetrating injury of the spinal cord or complete transection of the cord, including bone fragment lacerations, as identified by magnetic resonance imaging (MRI).
  • 2) Persons with a lesion in the conus medullaris, cauda equina, or lower extremity peripheral nerve.
  • 3) Persons unable to safely undergo an MRI.
  • 4) Persons in whom adequate MRI imaging cannot be obtained.
  • 5) Persons who have developed a pulmonary embolism (PE) or deep vein thrombosis (DVT).
  • 6) Other traumatic injuries (e.g., CHI, another level of SCI) affecting the ability to provide informed consent and participate fully in rehabilitation.
  • 7) Persons with self-reported persistent severe neuropathic pain, inadequately controlled by non-narcotic medication.
  • 8) Persons with severe persistent mechanical or thermal hypersensitivity/allodynia at the neurological level or rostral to it as documented by clinical testing.
  • 9) Pregnant women or a positive pregnancy test in those women with reproductive potential prior to enrollment.
  • 10) Presence of systemic disease that might interfere with subject safety, compliance, or evaluation of the condition under study.
  • 11) Presence of any unstable medical or psychiatric condition that could reasonably be expected to subject the participant to unwarranted risk from participation in the study or result in a significant deterioration of his/her clinical course.
  • 12) Body Mass Index (BMI) > 35.
  • 13) History of active substance abuse.
  • 14) Persons who have participated in other experimental treatments within the past 90 days deemed by the PI to represent a possible confound or enrolled in any other ongoing trial.
  • 15) Persons with significant lower extremity injury, previous surgery, or amputation such that would preclude satisfactory sural nerve harvest.
  • 16) Persons allergic to gentamicin
  • 17) Persons who test positive for HIV or Hepatitis B or C virus.
  • 18) Baseline entry criteria for renal function, CBC, INR, and liver tests including serum albumin, total bilirubin, alanine transaminase (ALT), aspartate transaminase (AST), alkaline phosphastase (ALP), and gamma glutamyl transpeptidase (GGT). Persons with lab values that are concerning in the context of SCI may be excluded from participating in the trial if these indicate chronic or severe acute pathology.
  • 19) Persons with autoimmune diseases, for which chronic corticosteroids or immunosuppression therapy may be needed.
  • 20) Persons with clinically documented malignancy in the past 5 years except for treated non-melanoma skin cancers.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01739023

Contacts
Contact: Kimberly Anderson, PhD 305-243-7108 KAnderson3@med.miami.edu

Locations
United States, Florida
University of Miami Miller School of Medicine Recruiting
Miami, Florida, United States, 33136
Contact: Kimberly Anderson, PhD         
Principal Investigator: Allan D Levi, MD, PhD         
Principal Investigator: James D Guest, MD, PhD         
Sub-Investigator: Barth Green, MD         
Sub-Investigator: Diana Cardenas, MD         
Sponsors and Collaborators
University of Miami
The Miami Project to Cure Paralysis
Investigators
Study Director: Dalton Dietrich, PhD University of Miami
Principal Investigator: Allan Levi, MD, PhD University of Miami
Principal Investigator: James Guest, MD, PhD University of Miami
  More Information

Additional Information:
No publications provided

Responsible Party: Allan D. Levi, MD, PhD, Professor of Neurosurgery, University of Miami
ClinicalTrials.gov Identifier: NCT01739023     History of Changes
Other Study ID Numbers: TMP-SC-001
Study First Received: November 28, 2012
Last Updated: June 10, 2014
Health Authority: United States: Food and Drug Administration

Keywords provided by University of Miami:
paraplegia
cell therapy
Schwann cells
spinal cord injury

Additional relevant MeSH terms:
Paraplegia
Spinal Cord Injuries
Central Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Paralysis
Signs and Symptoms
Spinal Cord Diseases
Trauma, Nervous System
Wounds and Injuries

ClinicalTrials.gov processed this record on November 20, 2014