NT-501 CNTF Implant for Ischemic Optic Neuropathy: Safety, Neuroprotection and Neuroenhancement

August 1, 2016 updated by: Jeffrey L Goldberg
Ciliary Neurotrophic Factor (CNTF) has been demonstrated in multiple preclinical models to enhance survival and regeneration of retinal ganglion cells, the retinal neurons injured in diseases like ischemic optic neuropathy/optic nerve stroke. We hypothesize that CNTF delivery to the human eye will provide neuroprotection (prevent loss of vision) and neuroenhancement (improve vision indices) in ischemic optic neuropathy. Patients in the trial will receive an NT-501 CNTF implant (made by Neurotech) into one eye, and will be carefully followed to evaluate safety and efficacy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

11

Phase

  • 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

  • United States
    • Florida
      • Miami, Florida, United States, 33136
        • Bascom Palmer Eye Institute, University of Miami Miller School of Medicine

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

40 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • age 40 years or older
  • must understand and sign the informed consent
  • must be medically able to undergo ophthalmic surgery for the NT-501 device insertion and possible removal, as well as the testing required.
  • diagnosis of ischemic optic neuropathy characterized by (a) non-arteritic subtype, including a normal ESR and CRP; (b) syndrome of acute unilateral visual loss with documented optic nerve head edema but without significant pain; (c) a relative afferent papillary defect in the affected eye, and a decrease of best-corrected visual acuity to 20/40 or worse in the affected eye, and detectable loss on visual field testing consistent with nerve fiber visual field defect but retaining measurable residual visual field preservation.

Exclusion Criteria:

  • other corneal, lens, optic nerve or retinal disease causing vision loss,
  • blind in one eye
  • requirement of acyclovir and/or related products during study
  • receiving systemic steroids or other immunosuppressive medications.
  • pregnant or lactating.
  • considered immunodeficient or has a known history of human immunodeficiency virus (HIV)
  • on chemotherapy, or a history of malignancy, UNLESS it was treated successfully 2 years prior to inclusion in the trial.

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: NT-501 CNTF Implant
Patients will receive single NT-501 CNTF implant in one eye
Drug: NT-501 CNTF Implant
Single implantation of CNTF-secreting NT-501 device into one eye

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Safety: Number of patients with adverse events
Time Frame: 18 months
Safety will be evaluated by determining the number of patients with adverse events, including loss of vision, visual field, or retinal/optic nerve structure, and ocular complications such as pain and inflammation.
18 months

Secondary Outcome Measures

Outcome Measure
Time Frame
Functional Efficacy: Vision, Visual Field, Pattern Electroretinogram, Visual Field Questionnaire-25
Time Frame: 18 months
18 months
Structural efficacy: Nerve fiber layer, optic nerve topography
Time Frame: 18 months
18 months

Collaborators and Investigators

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

Sponsor

Jeffrey L Goldberg

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

April 1, 2011

Primary Completion (Actual)

December 1, 2013

Study Completion (Actual)

October 1, 2014

Study Registration Dates

First Submitted

August 5, 2011

First Submitted That Met QC Criteria

August 5, 2011

First Posted (Estimate)

August 8, 2011

Study Record Updates

Last Update Posted (Estimate)

August 2, 2016

Last Update Submitted That Met QC Criteria

August 1, 2016

Last Verified

August 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 20090300

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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