AXER-204 in Participants With Chronic Spinal Cord Injury

NCT ID: NCT03989440

Last Updated: 2023-08-22

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1/PHASE2

Total Enrollment

52 participants

Study Classification

INTERVENTIONAL

Study Start Date

2019-07-16

Study Completion Date

2022-06-21

Brief Summary

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This two-part trial will assess the safety, tolerability, pharmacokinetics, and efficacy of AXER-204 administered by lumbar puncture and slow bolus infusion. Part 1 will evaluate the safety, tolerability, and pharmacokinetics of single ascending doses of AXER-204. Part 2 will evaluate the safety, tolerability, pharmacokinetics, and efficacy of repeated doses AXER-204 in comparison to placebo.

Detailed Description

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AXER-204 is a human fusion protein that acts as a soluble decoy/trap for the myelin-associated inhibitors of axonal growth known as Nogo-A, MAG, and OMgp. AXER-204 and a surrogate protein used in early preclinical studies have been found to promote axon growth and recovery of function in animal models of spinal cord injury.

Part 1 of the trial is a multicenter, open-label, single ascending dose study in participants with chronic cervical spinal cord injury. Four cohorts of 6 participants each are planned, with participants within each cohort expected to receive the same dose of AXER-204.

Part 2 is a multicenter, randomized, double-blind, placebo-controlled, repeat dose study in chronic cervical spinal cord injury participants. Approximately 32 participants will be randomized (ratio 1:1) to receive repeated doses of AXER-204 or placebo (a phosphate buffered saline formulation). The dose level and dose frequency will be dependent upon outcomes from Part 1.

Conditions

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Chronic Spinal Cord Injury

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Part 1 is open-label single-ascending dose. Part 2 is double-blind, placebo-controlled, repeat dose.
Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
Part 1 - None; Part 2 - Quadruple

Study Groups

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AXER-204

Part 1 - Single ascending doses; Part 2 - Repeated dose

Group Type EXPERIMENTAL

AXER-204

Intervention Type DRUG

human NoGo Trap fusion protein

Placebo

Part 2 only - Repeated dose

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Phosphate buffered saline formulation

Interventions

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AXER-204

human NoGo Trap fusion protein

Intervention Type DRUG

Placebo

Phosphate buffered saline formulation

Intervention Type DRUG

Other Intervention Names

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human NoGo Trap human Nogo Receptor decoy

Eligibility Criteria

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Inclusion Criteria

1. Traumatic spinal cord injury that occurred ≥ 1 year ago
2. Cervical spinal cord injury with serious neurologic deficit as evidenced by 1) bilateral ISNCSCI UEMS between 4 and 36 points inclusive, and 2) bilateral GRASSP Prehension Ability score between 4 and 17 points inclusive
3. Confirmation by MRI of the following:

1. Chronic SCI (persistent spinal cord lesion)
2. For AIS grade of A without sensory or motor zone of partial preservation extending at least two levels caudal to the level of injury, no apparent transection of the cord
3. CSF space spanning the lesion

Exclusion Criteria

1. Penetrating injury to the cord or spinal cord trauma caused by ballistic injury including gunshot that did not penetrate the spinal cord
2. History of stroke, cerebrovascular injury, or elevated intracranial pressure
3. Contraindications for lumbar puncture
4. Requiring mechanical ventilatory assistance of any type
5. Body mass index (BMI) ≥ 35 kg/m2 or body weight \<50 kg
6. History of life threatening allergic or immune-mediated reaction to vaccines, or biologic drugs, at any time or any life threatening allergic or immune-mediated reaction within the past 12 months
7. Subjects fitted with an implanted pump or port for delivery of therapeutics to the CSF
8. Uncontrolled medical condition including but not limited to cardiovascular disease, sleep apnea, obstructive lung disease, severe neuropathic or severe chronic pain, severe autonomic dysreflexia
9. Participation in any other investigational drug or device trial within 30 days or within 5 half-lives of the investigational drug or any past participation in a SCI cellular therapy trial.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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ReNetX Bio, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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George Maynard, PhD

Role: STUDY_DIRECTOR

ReNetX Bio

Locations

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Keck Medicine of USC

Los Angeles, California, United States

Site Status

Shepherd Center

Atlanta, Georgia, United States

Site Status

Shirley Ryan AbilityLab / Northwestern

Chicago, Illinois, United States

Site Status

Spaulding Rehabilitation

Boston, Massachusetts, United States

Site Status

The Ohio State University Wexner Medical Center

Columbus, Ohio, United States

Site Status

Thomas Jefferson University

Philadelphia, Pennsylvania, United States

Site Status

Countries

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United States

References

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Maynard G, Kannan R, Liu J, Wang W, Lam TKT, Wang X, Adamson C, Hackett C, Schwab JM, Liu C, Leslie DP, Chen D, Marino R, Zafonte R, Flanders A, Block G, Smith E, Strittmatter SM. Soluble Nogo-Receptor-Fc decoy (AXER-204) in patients with chronic cervical spinal cord injury in the USA: a first-in-human and randomised clinical trial. Lancet Neurol. 2023 Aug;22(8):672-684. doi: 10.1016/S1474-4422(23)00215-6.

Reference Type DERIVED
PMID: 37479373 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

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RNX-AX204-101

Identifier Type: -

Identifier Source: org_study_id

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