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CompletedNCT04207983ELECTROUpdated Mar 10, 2022

A 48 Week Study to Evaluate the Efficacy and Safety of Two (2) EYS606 Treatment Regimens in Subjects With Active Chronic Non-infectious Uveitis (CNIU)

A Phase 2 interventional study of EYS606 in Non-infectious Uveitis, sponsored by Eyevensys. Completed at 3 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-03-10.

Sponsored by Eyevensys · Phase 2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Oct 2021, 5 years 1 month ago, and no results have been posted to the registry.
Phase
Phase 2
Study type
Interventional
Enrollment
3
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 139 studies in Uveitis with a site in United States — 7 open to participants now, 11 under way, 1 of them phase 3. Uveitis · United States.

Enrollment
90th of 100
3 · median 19
Started
2020
with 2 others
Phase 2
28 of 139
none open now
Registered
118th of 139
by date

Among the 139 studies in Uveitis with a site in United States, this one is the 90th largest by enrollment of the 100 interventional ones, is one of 3 that started in 2020, is one of 28 in phase 2, and was the 118th registered.

By phase

139 studies; the count open now beside each. This study's row is marked.

Observational36 · 5 open
Phase 331 · 0 open
Phase 2this study28 · 0 open
Phase 117 · 2 open
Phase 1/212 · 0 open
Phase 49 · 0 open
No phase6 · 0 open

By the year they started

First in 1987; this study’s year is marked. 3 started in 2020.

Size and results

Median enrollment 19 across the 100 interventional studies, 123 across the 36 observational. Of the 117 that completed or were terminated, 50 (43%) have results posted.

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02

Study summary

The objective of the study is to evaluate the efficacy and safety of two different treatment regimens of EYS606.

Read the detailed description

This is a Phase 2, multi-center, randomized open-label interventional study of EYS606 in subjects with active chronic non-infectious uveitis.

The maximum study duration per patient is 51 Weeks (including an up to 3 week screening period + 48 weeks follow-up after treatment).

The study will be conducted in 2 parts. Part I is a safety cohort phase that will enroll up to 6 subjects, Part II is the randomized comparison phase that will enroll up to an additional 50 subjects.

03

Conditions studied

  • Non-infectious Uveitis

Browse trials for

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Eligibility Criteria:

  1. Subject must be 18 years of age or older.
  2. Subject must have a diagnosis of chronic non-infectious uveitis of any anatomic subtype (anterior, intermediate, posterior or panuveitis).
  3. Subject must have a history of chronic or recurrent non-infectious uveitis requiring or having required treatment with (systemic, periocular or intraocular) and/or systemic medication(s) in the 12 months prior to the screening visit.
  4. Best corrected visual acuity of

    • Study Part I: ≥ 5 and \< 67 ETDRS letters in the study eye (equivalent to less than or equal to 20/50 but better than or equal to 20/800 Snellen).
    • Study Part II: ≥ 5 and \< 77 ETDRS letters in the study eye (equivalent to less than or equal to 20/32 but better than or equal to 20/800 Snellen).
  5. At the screening and baseline visits subject must have active chronic non-infectious uveitis as evidenced by at least one or more of the following in the study eye:

    • Active retinal vasculitis (retinal vascular leakage) involving the posterior pole confirmed by the reading center.
    • Vitreous haze grade ≥ 2+ (SUN classification).
    • Anterior chamber cell grade ≥ 2+ (SUN classification); anterior chamber cells must be present for subjects with a diagnosis of chronic anterior non-infectious uveitis.
    • Persistent macular edema (defined as central retinal thickness (CRT) > 300 microns or > 320 microns using Zeiss Cirrus and Topcon or Heidelberg Spectralis spectral domain ocular coherence tomography (SD-OCT) instruments, respectively) despite treatment with corticosteroids and/or immunosuppressive therapy for at least 4 weeks prior to screening.
  6. Subject receiving concomitant topical and/or systemic corticosteroids or allowed systemic immunosuppressive medications must have maintained the same treatment regimen (dosage/frequency) for at least 2 weeks prior to the baseline (V1) visit, (if applicable).
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
3 participants (actual)

Study arms

  • Experimental
    Treatment Arm A (Re-administration)

    Two administrations of EYS606 (135μg pEYS606/90 μL). The frequency between the two administrations will be determined by the DSMB upon completion of the Part I safety cohorts.

    Combination Product: EYS606

  • Experimental
    Treatment Arm B (Single administration)

    One administration of EYS606 (135μg pEYS606/90 μL) at the baseline visit (V1).

    Combination Product: EYS606

Interventions

  • Combination productEYS606

    EYS606 is a DNA plasmid solution administered by electrotransfection into the ciliary muscle

06

What researchers measure

Primary outcomes

  1. Time to rescue therapy between the two EYS606 treatment regimens

    Assessment of efficacy measured as time to rescue therapy required after treatment with EYS606

    Time frame: Week 24

Secondary outcomes

  1. Proportion (%) of subjects responded to the treatment

    Measured as an improvement in anterior cell grade and vitreous haze grade according to the SUN scale, retinal vessel leakage using fluorescein angiography, central retinal thickness using ocular coherence tomography, and an increase in visual acuity using EDTRS compared to baseline

    Time frame: Week 8 and 24

  2. Proportion (%) of subjects achieving and maintaining active chronic noninfectious posterior uveitis (CNIU)

    Measured as an improvement in anterior cell grade and vitreous haze grade according to the SUN scale, retinal vessel leakage using fluorescein angiography, central retinal thickness using ocular coherence tomography, and an increase in visual acuity using EDTRS compared to baseline

    Time frame: Week 24

  3. Median time to control of active CNIU

    Measured as an improvement in anterior cell grade and vitreous haze grade according to the SUN scale, retinal vessel leakage using fluorescein angiography, and central retinal thickness using ocular coherence tomography

    Time frame: Each Visit up to Week 48

  4. Median time to loss of treatment effect

    Measured as an worsening in anterior cell grade and vitreous haze grade according to the SUN scale, retinal vessel leakage using fluorescein angiography, central retinal thickness using ocular coherence tomography, decrease in visual acuity using EDTRS, and any increase in the frequency of dose of specified concomitant medications

    Time frame: Each Visit up to Week 48

  5. Median change in visual acuity

    Measured in change from baseline in best-corrected visual acuity using EDTRS

    Time frame: Each Visit up to Week 48

07

Study locations

3 sites
  • Cleveland Clinic Foundation
    Cleveland, Ohio 93309, United States
  • Texas Retina Associates
    Arlington, Texas 76012, United States
  • Houston Eye Associates
    Houston, Texas 77025, United States
08

References and documents

Publications

  • Touchard E, Benard R, Bigot K, Laffitte JD, Buggage R, Bordet T, Behar-Cohen F. Non-viral ocular gene therapy, pEYS606, for the treatment of non-infectious uveitis: Preclinical evaluation of the medicinal product. J Control Release. 2018 Sep 10;285:244-251. doi: 10.1016/j.jconrel.2018.07.013. Epub 2018 Aug 1. PubMed 30009894 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2020 to primary completion in Oct 2021, 20 months.

Of 17 phase 2 interventional studies under Uveitis, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 20 and three quarters within 37. This study's 20 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 19, 2019
First posted
Dec 23, 2019
StartActual
Feb 3, 2020
Primary completionActual
Oct 5, 2021
CompletionActual
Oct 5, 2021
Last update
Mar 10, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 10, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04207983
Lead sponsor
Eyevensys
Responsible party
Sponsor
First posted
Dec 23, 2019
Start date
Feb 3, 2020
Primary completion
Oct 5, 2021
Completion
Oct 5, 2021
Last update
Mar 10, 2022

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2022. You cannot join it, but the record below documents what was studied.

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