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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01949324
Registration number
NCT01949324
Ethics application status
Date submitted
19/09/2013
Date registered
24/09/2013
Date last updated
12/09/2018
Titles & IDs
Public title
A Phase 2 Multicenter Randomized Clinical Trial of CNTF for MacTel
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Scientific title
A Phase 2 Multicenter Randomized Clinical Trial of Ciliary Neurotrophic Factor (CNTF) for Macular Telangiectasia Type 2 (MacTel)
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Secondary ID [1]
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NTMT-02
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Macular Telangiectasia Type 2
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Condition category
Condition code
Cardiovascular
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Diseases of the vasculature and circulation including the lymphatic system
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Human Genetics and Inherited Disorders
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Other human genetics and inherited disorders
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Other - Ciliary neurotrophic factor (CNTF)
Treatment: Surgery - Sham procedure
Treatment: Devices - NT-501 Implant
Treatment: Surgery - NT-501 Implant procedure
Experimental: NT-501 Implant procedure - The investigational product is the NT-501 encapsulated cell system which consists of cells encapsulated within a semi-permeable polymer membrane and supportive matrices. NT-501 contains NTC-201 cells that were derived from the NTC-200 cell line by genetic modification so as to secrete recombinant human ciliary neurotrophic factor (CNTF).
Sham comparator: Sham procedure - Non-penetrating sham procedure to mimic implant procedure
Treatment: Other: Ciliary neurotrophic factor (CNTF)
Ciliary neurotrophic factor released from NT-501 encapsulated cell implant
Treatment: Surgery: Sham procedure
Sham surgery for Sham arm
Treatment: Devices: NT-501 Implant
NT-501 encapsulated cell implant
Treatment: Surgery: NT-501 Implant procedure
Surgery to implant device for NT-501 encapsulated cell implant releasing human ciliary neurotrophic factor arm
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Intervention code [1]
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Treatment: Other
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Intervention code [2]
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Treatment: Surgery
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Intervention code [3]
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Treatment: Devices
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Ellipsoid zone (area of IS/OS loss) as measured by en face imagining by SDOCT in study eye(s)
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Assessment method [1]
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Change in the ellipsoid zone (area of IS/OS loss) from baseline to month 24 as measured by en face imaging by SDOCT in study eye(s)
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Timepoint [1]
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24 months
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Secondary outcome [1]
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Ellipsoid zone
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Assessment method [1]
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Change in the ellipsoid zone from baseline to Month 12.
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Timepoint [1]
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12 months
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Secondary outcome [2]
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Retinal sensitivity (dB) as measured by microperimetry
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Assessment method [2]
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Change in retinal sensitivity (dB) as measured by microperimetry from baseline to Months 12 and 24.
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Timepoint [2]
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12 and 24 months
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Secondary outcome [3]
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Increase in ellipsoid zone
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Assessment method [3]
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Proportion of study eyes with a 35% or more increase from baseline in the ellipsoid zone at Months 12 and 24.
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Timepoint [3]
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12 and 24 months
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Secondary outcome [4]
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Visual Acuity
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Assessment method [4]
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Change in best corrected visual acuity (BCVA) from baseline to Months 12 and 24.
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Timepoint [4]
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12 and 24 months
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Secondary outcome [5]
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Visual Acuity
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Assessment method [5]
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Proportion of study eyes with 15 or more letter loss from baseline in BCVA at Months 12 and 24.
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Timepoint [5]
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12 and 24 Months
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Secondary outcome [6]
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Visual Acuity
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Assessment method [6]
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Proportion of study eyes with 10 or more letter loss from baseline in BCVA at Months 12 and 24.
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Timepoint [6]
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12 and 24 Months
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Secondary outcome [7]
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Reading Speed
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Assessment method [7]
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Change in reading speed as measured by the IReST from baseline to Months 12 and 24.
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Timepoint [7]
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12 and 24 Months
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Eligibility
Key inclusion criteria
* Participant must be offered sufficient opportunity to review and to understand the informed consent form, agree to the form's contents and sign the protocol's informed consent
* Participant must have at least one study eye with a positive diagnosis of MacTel Type 2
* Participant must have an IS/OS PR break in the study eye(s) and en face ellipsoid zone (area of IS/OS loss) as measured by SDOCT between 0.16 mm2 and 4.00 mm2
* If female, participant must be incapable of pregnancy
* If male, participant must agree to use an effective form of birth control during the study
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Minimum age
21
Years
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Maximum age
80
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Participant is unable to provide informed consent
* Participant is less than 21 years of age or greater than 80 years of age
* Participant is medically unable to comply with study procedures or follow-up visits
* Participant was a study subject in any other clinical trial of an intervention (drug or device) within the last 6 months
* Participant is pregnant or breastfeeding
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 2
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/04/2014
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
22/05/2017
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Sample size
Target
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Accrual to date
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Final
67
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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Save Sight Institute - Sydney
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Recruitment hospital [2]
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Centre for Eye Research Australia - East Melbourne
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Recruitment hospital [3]
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Lions Eye Institute - Nedlands
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Recruitment postcode(s) [1]
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- Sydney
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Recruitment postcode(s) [2]
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- East Melbourne
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Recruitment postcode(s) [3]
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- Nedlands
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Recruitment outside Australia
Country [1]
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United States of America
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State/province [1]
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California
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Country [2]
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United States of America
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State/province [2]
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Florida
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Country [3]
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United States of America
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State/province [3]
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Georgia
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Country [4]
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United States of America
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State/province [4]
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Maryland
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United States of America
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State/province [5]
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Massachusetts
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Country [6]
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United States of America
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State/province [6]
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Michigan
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Country [7]
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United States of America
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State/province [7]
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Ohio
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Country [8]
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United States of America
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State/province [8]
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Wisconsin
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
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Name
Neurotech Pharmaceuticals
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Address
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Other collaborator category [1]
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Other
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Name [1]
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The Lowy Medical Research Institute Limited
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Address [1]
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Other collaborator category [2]
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Commercial sector/industry
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Name [2]
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The Emmes Company, LLC
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Address [2]
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Ethics approval
Ethics application status
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Summary
Brief summary
This study is a phase 2, randomized, multi-center, single-masked study to evaluate the efficacy and safety of the NT-501 implants in participants with Mactel.
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Trial website
https://clinicaltrials.gov/study/NCT01949324
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Trial related presentations / publications
Loo J, Cai CX, Choong J, Chew EY, Friedlander M, Jaffe GJ, Farsiu S. Deep learning-based classification and segmentation of retinal cavitations on optical coherence tomography images of macular telangiectasia type 2. Br J Ophthalmol. 2022 Mar;106(3):396-402. doi: 10.1136/bjophthalmol-2020-317131. Epub 2020 Nov 23.
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Public notes
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Contacts
Principal investigator
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Address
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Phone
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Fax
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Email
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Contact person for public queries
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Fax
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Contact person for scientific queries
No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT01949324
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