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Retinal DiseasePhase 1/2NCT01468337

Topical Interferon Gamma-1b for Central Serous Chorioretinopathy

A Phase 1/2 study testing Interferon gamma-1b in people with Retinal Disease and Macular Disease, run by National Eye Institute (NEI) at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

Background: In the eye disease central serous chorioretinopathy (CSC), fluid collects under the retina at the back of the eye. CSC can resolve on its own, but in some people it lasts for several months or can come back. The fluid buildup during CSC can cause vision loss. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Retinal Disease, Macular Disease
What is being tested?
Interferon gamma-1b
Could I receive a placebo?
No, everyone receives an active treatment
How many people
5 participants
Where
1 siteUnited States
Study dates
Oct 2011to Feb 2014
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Participant must be 18 years of age or older.
  • Participant must understand and sign the protocol s informed consent document.
  • Female participant of childbearing potential (see Appendix 1 for definition) must not be pregnant or breast-feeding, must have a negative pregnancy test at screening and must be willing to undergo pregnancy tests at scheduled study visits.
  • Female participant must be post-menopausal (see Appendix 1), must have had a hysterectomy, have a partner with a vasectomy, be completely abstinent from intercourse or must agree to practice two reliable methods of contraception throughout the course of the study and for six weeks after administration of investigational product. Acceptable methods of contraception include:
  • hormonal contraception (i.e., birth control pills, injected hormones, dermal patch or vaginal ring);
  • intrauterine device;
  • barrier methods (diaphragm, condom) with spermicide; or
  • surgical sterilization (tubal ligation).

Who cannot join

  • Participant is actively receiving an investigational medication in another research trial that may have unknown effects on CSC as determined by the investigator.
  • Participant has evidence of ocular disease other than CSC in the study eye that may confound the outcome of the study (e.g., neovascular age-related macular degeneration).
  • Participant has evidence of choroidal neovascularization (CNV) in the study eye.
  • Participant is expected to need ocular surgery in the study eye during the eight weeks of the study.
  • Participant is expected to need focal laser treatment or photodynamic therapy (PDT) in the study eye during the eight weeks of the study.
  • Participant is on medications that enhance RPE pumping of fluid (e.g., acetazolamide).
Show all 11Show fewer
  • Participant is on steroid medication (oral (e.g., prednisone), topical (e.g., hydrocortisone cream) or inhaled (e.g., fluticasone inhaler)).
  • Participant has a systemic condition that, in the opinion of the investigator, would preclude participation in the study (e.g., Hypertension not controlled with medications or active infection requiring treatment).
  • Participant is allergic to fluorescein dye.
  • Participant has multiple sclerosis (MS), as interferon gamma may cause MS exacerbations.
  • Participant is on anti-cortisol or anti-androgen medications (e.g., finasteride or mifepristone), as there is some data suggesting that these medications may reduce CSC fluid.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • National Institutes of Health Clinical Center, 9000 Rockville Pike

    Bethesda, Maryland, 20892

Other trials in United States

About this study

Official title: Pilot Phase I/II Study of the Treatment of Classic Central Serous Chorioretinopathy With Topical Interferon Gamma-1b

Background:

  • In the eye disease central serous chorioretinopathy (CSC), fluid collects under the retina at the back of the eye. CSC can resolve on its own, but in some people it lasts for several months or can come back. The fluid buildup during CSC can cause vision loss. The drug interferon gamma-1b can help reduce fluid accumulation in the retina. Researchers want to see if interferon gamma-1b can help treat and prevent vision loss from CSC.
Read more

Objectives:

  • To see if interferon gamma-1b eye drops are a safe and effective treatment for CSC.

Eligibility:

  • Individuals at least 18 years of age who have CSC in at least one eye.

Design:

  • Participants will be screened with a physical exam and medical history. They will also have an eye exam and blood tests.
  • This study will require at least ten visits to the National Institutes of Health eye clinic over a total of 52 weeks (one year). Most visits will last up to 4 hours.
  • Participants will return to the eye clinic 2 days after the first visit and 1, 2, 4, 8, 12, 24, 36 and 48 weeks after starting the study eye drops. These visits will involve blood tests and eye exams.
  • Participants will receive the study eye drops at the initial visit. The drops must be used three or four times a day for 2 weeks. They must be stored in a cool place (like a refrigerator). The doses will follow an escalation schedule with the first participant receiving 2 drops three times a day and the last participant receiving 4 drops four times a day. To maximize safety, the most-recently enrolled participant will complete Week 4 before the next participant can enroll (e.g., the second enrolled participant will not be enrolled until the first has completed the Week 4 visit).
  • If the CSC does not improve after the first 2 weeks, participants will receive another 2 weeks of eye drops. This set of drops will start 4 weeks after the initial study visit.
  • If the CSC does not improve after the 8-week study period, participants may receive additional eye drops at the maximum dose of 4 drops four times daily.
  • The study will end for each participant at one year (48 weeks after the initial study visit).
Read the detailed description

Objective: Central serous chorioretinopathy (CSC) is a retinal disorder characterized by an accumulation of serous fluid under the retina thought to be due to excessive choroidal hyperpermeability. The retinal pigment epithelium (RPE) plays a critical role in removing fluid from the subretinal space. This RPE "pump" is believed to be a key player in the reabsorption of subretinal fluid and maintenance of retinal attachment. Fluid transport assays have examined whether interferon gamma induces changes in fluid transport across human fetal RPE monolayers and showed an increase in fluid absorption from the retinal to the choroidal side of the tissue. An in vivo rodent model of retinal detachment has been used to measure the effect of interferon gamma on re-absorption following retinal detachment and showed that the addition of interferon gamma to the anterior eye surface caused a significant, rapid decrease in retinal detachment volume in the first hour of observation. This pilot study will investigate the safety, tolerability and potential efficacy of serial ocular instillations of topical interferon gamma-1b for classic CSC.

Study Population: Five participants with subretinal fluid due to classic CSC will initially be enrolled. However, up to an additional two participants may be enrolled in order to obtain the five participants to be included in the analysis if any participants withdraw from the study.

Design: In this Phase I/II, non-randomized, prospective, uncontrolled, dose-escalation, single-center pilot study, a series of ocular instillations of topical interferon gamma-1b will be administered in the study eye over a two-week period. If the fluid re-accumulates or increases, participants will be eligible for re-challenging with topical interferon gamma-1b in the study eye at Week 4. Participants will be followed for one year. Participants may be eligible for additional re-challenges after the initial eight week study period ends if their fluid re-accumulates or increases further.

Outcome Measures: The primary outcome measure related to the safety and tolerability of serial ocular instillations of topical interferon gamma-1b will be assessed by the number and severity of adverse events (AEs) related to the investigational product and the number of withdrawals. Secondary efficacy outcomes include changes in best-corrected visual acuity (BCVA), central retinal thickness and maximum lesion volume as measured on optical coherence tomography (OCT), leakage as observed on fluorescein angiograms (FA), autofluorescence patterns as observed on fundus autofluorescence (FAF) imaging and mean macular sensitivity as assessed by microperimetry.

Being tested
Interferon gamma-1b
Keywords
Central Serous Chorioretinopathy, Interferon-Gamma (IFN-Gamma), Jakstat, Retinal Eye Disease, Macular Eye Disease, CSC
Medical subject headings
Retinal Diseases, Macular Degeneration, Central Serous Chorioretinopathy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Interferon gamma-1bDrug

    Also called Actimmune®

    Participant 1: 2 drops of topical interferon gamma-1b three times daily in the study eye for a daily dose of 42 μg

    Participant 2: 3 drops 3 times daily in the study eye for a daily dose of 63 μg, if the 1st participant's dose is deemed well-tolerated by the investigator at Weeks 1, 2 and 4.

    Participant 3: 3 drops 4 times daily in the study eye for a daily dose of 84 μg, if the 2nd tolerates the daily dose of 63 μg at Weeks 1, 2 and 4.

    Participants 4 and 5: 4 drops 4 times daily in the study eye for a daily dose of 112 μg, if the 3rd tolerates the daily dose of 84 μg at Weeks 1, 2 and 4.

    If the 63, 84 or 112 μg doses are not well-tolerated, subsequent participants will be enrolled at the prior dose level (42, 63 or 84 μg). Well-tolerated is defined as no corneal irritation (e.g., punctuate epithelial keratitis), no coexisting conjunctival erythema and edema, and no signs of more serious toxicities (e.g., intraocular inflammation or lens changes).

Study groups in NCT01468337
Study groupRoleWhat they receive
Interferon gamma-1bExperimentalInterferon gamma-1b (Actimmune®, InterMune, Inc, Brisbane, CA 94005) was supplied to participants in single-use dropperettes. A single dropperette contains 1 mL of topical interferon gamma-1b (Actimmune®) at a concentration of 200 µg/mL, which is equivalent to 28 drops. Each drop provides a dose of 7 µg of investigational product. All participants will receive interferon gamma-1b for two weeks. Doses of interferon gamma-1b eye drops will be escalated among participants during this initial 2-week period; however, additional doses will be dispensed to participants if needed at Week 4 or after the initial 8-week study period. Participants eligible for additional doses after 8 weeks will be administered the maximum dose of 4 drops 4 times daily for a total daily dose of 112 μg.
Receives: Drug: Interferon gamma-1b

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Total Number of Severe Ocular Adverse Events Related to the Investigational Product

    Measured: Week 48

  2. Total Number of Ocular Adverse Events Related to Investigational Product

    Measured: Week 48

  3. Total Number of Severe Non-ocular Adverse Events Related to the Investigational Product

    Measured: Week 48

  4. Total Number of Non-ocular Adverse Events Related to the Investigational Product

    Measured: Week 48

  5. Number of Participants Who Withdrew From the Study

    Measured: Week 48

Secondary outcomes (14)
  1. Changes in Best-corrected Visual Acuity (BCVA) in the Study Eye at Week 2 Compared to Baseline

    Visual acuity was measured using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Acuity is measured as letters read on an ETDRS eye chart and the letters read equate to Snellen measurements. For example, if a participant reads between 84 and 88 letters, the equivalent Snellen measurement is 20/20.

    A positive change value indicates improvement of the outcome. A negative change value indicates worsening of the outcome.

    Measured: Baseline and Week 2

  2. Changes in Best-corrected Visual Acuity (BCVA) in the Fellow Eye at Week 2 Compared to Baseline

    Visual acuity was measured using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Acuity is measured as letters read on an ETDRS eye chart and the letters read equate to Snellen measurements. For example, if a participant reads between 84 and 88 letters, the equivalent Snellen measurement is 20/20.

    A positive change value indicates improvement of the outcome. A negative change value indicates worsening of the outcome.

    Measured: Baseline and Week 2

  3. Changes in Best-corrected Visual Acuity (BCVA) in the Study Eye at Week 48 Compared to Baseline

    Visual acuity was measured using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Acuity is measured as letters read on an ETDRS eye chart and the letters read equate to Snellen measurements. For example, if a participant reads between 84 and 88 letters, the equivalent Snellen measurement is 20/20.

    A positive change value indicates improvement of the outcome. A negative change value indicates worsening of the outcome.

    Measured: Baseline and Week 48

  4. Changes in Best-corrected Visual Acuity (BCVA) in the Fellow Eye at Week 48 Compared to Baseline

    Visual acuity was measured using the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Acuity is measured as letters read on an ETDRS eye chart and the letters read equate to Snellen measurements. For example, if a participant reads between 84 and 88 letters, the equivalent Snellen measurement is 20/20.

    A positive change value indicates improvement of the outcome. A negative change value indicates worsening of the outcome.

    Measured: Baseline and Week 48

  5. Changes in the Maximum Subretinal Fluid Volume as Measured on Optical Coherence Tomography (OCT) at Week 2 Compared to Baseline

    Measured: Baseline and Week 2

  6. Changes in Central Retinal Thickness as Measured on Optical Coherence Tomography (OCT) at Week 2 Compared to Baseline

    Measured: Baseline and Week 2

  7. Changes in Leakage as Observed on Fluorescein Angiography (FA) at Week 2 Compared to Baseline

    Measured: Baseline and Week 2

  8. Changes in the Autofluorescence Patterns as Observed on Fundus Autofluorescence (FAF) Imaging at Week 2 Compared to Baseline

    Measured: Baseline and Week 2

  9. Changes in Mean Macular Sensitivity as Assessed by Microperimetry at Week 2 Compared to Baseline

    Measured: Baseline and Week 2

  10. Changes in the Maximum Subretinal Fluid Volume as Measured on Optical Coherence Tomography (OCT) at Week 48 Compared to Baseline

    Measured: Baseline and Week 48

  11. Changes in Central Retinal Thickness as Measured on Optical Coherence Tomography (OCT) at Week 48 Compared to Baseline

    Measured: Baseline and Week 48

  12. Changes in Leakage as Observed on Fluorescein Angiography (FA) at Week 48 Compared to Baseline

    Measured: Baseline and Week 48

  13. Changes in the Autofluorescence Patterns as Observed on Fundus Autofluorescence (FAF) Imaging at Week 48 Compared to Baseline

    Measured: Baseline and Week 48

  14. Changes in Mean Macular Sensitivity as Assessed by Microperimetry at Week 48 Compared to Baseline

    Measured: Baseline and Week 48

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Nov 2011 (estimated)
  2. Study startOct 2011
  3. Primary completionNov 2013
  4. Study completionFeb 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
5 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01468337
Sponsor's protocol ID
120013
Other IDs
12-EI-0013
Status last verified
Nov 2014
First submitted
5 Nov 2011
Last updated
30 Jan 2024
Data monitoring committee
No

Publications

  • Imamura Y, Fujiwara T, Margolis R, Spaide RF. Enhanced depth imaging optical coherence tomography of the choroid in central serous chorioretinopathy. Retina. 2009 Nov-Dec;29(10):1469-73. doi: 10.1097/IAE.0b013e3181be0a83.

    PubMed 19898183
  • Iida T, Kishi S, Hagimura N, Shimizu K. Persistent and bilateral choroidal vascular abnormalities in central serous chorioretinopathy. Retina. 1999;19(6):508-12. doi: 10.1097/00006982-199911000-00005.

    PubMed 10606450
  • Prunte C, Flammer J. Choroidal capillary and venous congestion in central serous chorioretinopathy. Am J Ophthalmol. 1996 Jan;121(1):26-34. doi: 10.1016/s0002-9394(14)70531-8.

    PubMed 8554078

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Interferon gamma-1b in people with Retinal Disease and Macular Disease, run by National Eye Institute (NEI) at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 30 Jan 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 19 Nov 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Total Number of Severe Ocular Adverse Events Related to the Investigational Product (time frame: Week 48). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01468337, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 30 Jan 2024.

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