Prompt Panretinal Photocoagulation Versus Ranibizumab+Deferred Panretinal Photocoagulation for Proliferative Diabetic Retinopathy (Protocol S)

This study is ongoing, but not recruiting participants.
National Eye Institute (NEI)
Genentech, Inc.
Information provided by (Responsible Party):
Diabetic Retinopathy Clinical Research Network Identifier:
First received: December 6, 2011
Last updated: April 1, 2015
Last verified: January 2015

December 6, 2011
April 1, 2015
March 2012
January 2015   (final data collection date for primary outcome measure)
Mean change in visual acuity from baseline to 2 years [ Time Frame: 2 years ] [ Designated as safety issue: No ]
Same as current
Complete list of historical versions of study NCT01489189 on Archive Site
  • Mean visual acuity [ Time Frame: 2-years ] [ Designated as safety issue: No ]
  • Proportion of eyes with 10 and 15 letter vision loss or gain [ Time Frame: 2-years ] [ Designated as safety issue: No ]
  • Humphrey visual field (HVF) testing, at sites with HVF capabilities NEI VFQ-25, and UAB-LLQ [ Time Frame: 2-years ] [ Designated as safety issue: No ]
    VFQ-25=Visual Function Questionnaire-25, UAB-JJQ=University of Alabama at Birmingham Low Luminance Questionnaire,
  • Need for Vitrectomy [ Time Frame: 2-years ] [ Designated as safety issue: Yes ]
  • Mean change in OCT central subfield thickness from baseline [ Time Frame: 2-years ] [ Designated as safety issue: No ]
  • Proportion of eyes with progression to central subfield involved diabetic macular edema [ Time Frame: 2-years ] [ Designated as safety issue: No ]
    In eyes without central subfield involved diabetic macular edema only.
  • Percent of eyes with vitreous hemorrhage [ Time Frame: 2-years ] [ Designated as safety issue: Yes ]
  • Proportion of eyes with complete regression of neovascularization on fundus photography from baseline to 2-years [ Time Frame: baseline to 2-years ] [ Designated as safety issue: No ]
  • Treatment and Follow-up costs [ Time Frame: 2-years ] [ Designated as safety issue: No ]
Same as current
Not Provided
Not Provided
Prompt Panretinal Photocoagulation Versus Ranibizumab+Deferred Panretinal Photocoagulation for Proliferative Diabetic Retinopathy
Prompt Panretinal Photocoagulation Versus Intravitreal Ranibizumab With Deferred Panretinal Photocoagulation for Proliferative Diabetic Retinopathy

The primary objective of the protocol is to determine if visual acuity outcomes at 2 years in eyes with proliferative diabetic retinopathy (PDR) that receive anti-vascular endothelial growth factor (anti-VEGF) therapy with deferred panretinal photocoagulation (PRP) are non-inferior to those in eyes that receive standard prompt PRP therapy.

Secondary objectives include:

  • Comparing other visual function outcomes (including Humphrey visual field testing and study participant self-reports of visual function) in eyes receiving anti-VEGF with deferred PRP with those in eyes receiving prompt PRP.
  • Determining percent of eyes not requiring PRP when anti-VEGF is given in the absence of prompt PRP.
  • Comparing safety outcomes between treatment groups.
  • Comparing associated treatment and follow-up exam costs between treatment groups.
Not Provided
Phase 3
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Proliferative Diabetic Retinopathy
  • Other: Prompt Panretinal Photocoagulation
    Panretinal photocoagulation alone at baseline (full session completed within 56 days).
  • Drug: 0.5-mg Ranibizumab
    Intravitreal injection of 0.5 mg ranibizumab (Lucentis™) at baseline and up to every 4 weeks using defined retreatment criteria.
  • Other: Deferred panretinal photocoagulation
    PRP is deferred until failure/futility criteria for intravitreal injection are met.
  • Experimental: Anti-VEGF+Deferred PRP
    Anti-VEGF= Anti vascular endothelial growth factor. PRP= Panretinal photocoagulation. Intravitreal anti-VEGF with PRP only if indicated.
    • Drug: 0.5-mg Ranibizumab
    • Other: Deferred panretinal photocoagulation
  • Active Comparator: Prompt PRP
    PRP= Panretinal Photocoagulation. PRP alone.
    Intervention: Other: Prompt Panretinal Photocoagulation
Writing Committee for the Diabetic Retinopathy Clinical Research Network, Gross JG, Glassman AR, Jampol LM, Inusah S, Aiello LP, Antoszyk AN, Baker CW, Berger BB, Bressler NM, Browning D, Elman MJ, Ferris FL 3rd, Friedman SM, Marcus DM, Melia M, Stockdale CR, Sun JK, Beck RW. Panretinal Photocoagulation vs Intravitreous Ranibizumab for Proliferative Diabetic Retinopathy: A Randomized Clinical Trial. JAMA. 2015 Nov 24;314(20):2137-46. doi: 10.1001/jama.2015.15217. Erratum in: JAMA. 2016 Mar 1;315(9):944.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Active, not recruiting
December 2017
January 2015   (final data collection date for primary outcome measure)

Inclusion Criteria:

Age >= 18 years -Individuals < 18 years old are not being included because PDR is so rare in this age group that the diagnosis of PDR may be questionable.

Diagnosis of diabetes mellitus (type 1 or type 2)

Any one of the following will be considered to be sufficient evidence that diabetes is present:

  • Current regular use of insulin for the treatment of diabetes
  • Current regular use of oral anti-hyperglycemia agents for the treatment of diabetes
  • Documented diabetes by ADA and/or WHO criteria (see Procedures Manual for definitions) Able and willing to provide informed consent.

Meets at least all of the following ocular criteria criteria:

  • Presence of PDR which the investigator intends to manage with PRP alone but for which PRP can be deferred for at least 4 weeks in the setting of intravitreal ranibizumab, in the investigator's judgment.
  • Best corrected Electronic-Early Treatment Diabetic Retinopathy Study (E-ETDRS) visual acuity letter score > 24 (approximate Snellen equivalent 20/320) on the day of randomization.
  • Media clarity, pupillary dilation, and study participant cooperation sufficient to administer PRP and obtain adequate fundus photographs and OCT.

    • Investigator must verify accuracy of OCT scan by ensuring it is centered and of adequate quality

Exclusion Criteria:

Significant renal disease, defined as a history of chronic renal failure requiring dialysis or kidney transplant.

A condition that, in the opinion of the investigator, would preclude participation in the study (e.g., unstable medical status including blood pressure, cardiovascular disease, and glycemic control).

  • Individuals in poor glycemic control who, within the last 4 months, initiated intensive insulin treatment (a pump or multiple daily injections) or plan to do so in the next 4 months should not be enrolled.

Participation in an investigational trial within 30 days of randomization that involved treatment with any drug that has not received regulatory approval for the indication being studied.

  • Study participants cannot receive another investigational drug while participating in the study.

Known allergy to any component of the study drug.

Blood pressure > 180/110 (systolic above 180 or diastolic above 110).

  • If blood pressure is brought below 180/110 by anti-hypertensive treatment, individual can become eligible.

Myocardial infarction, other acute cardiac event requiring hospitalization, stroke, transient ischemic attack, or treatment for acute congestive heart failure within 4 months prior to randomization.

Systemic anti-VEGF or pro-VEGF treatment within 4 months prior to randomization.

  • These drugs should not be used during the study.

For women of child-bearing potential: pregnant or lactating or intending to become pregnant within the next 3 years.

  • Women who are potential study participants should be questioned about the potential for pregnancy. Investigator judgment is used to determine when a pregnancy test is needed.

Individual is expecting to move out of the area of the clinical center to an area not covered by another certified clinical center during the 3 years of the study.

Individual has any of the following ocular characteristics:

  • History of prior panretinal photocoagulation (prior PRP is defined as ≥ 100 burns outside of the posterior pole)
  • Tractional retinal detachment involving the macula.

    -- A tractional retinal detachment is not an exclusion if it is outside of the posterior pole (not threatening the macula) and in the investigator's judgment, is not a contraindication to intravitreal ranibizumab treatment and also does not preclude deferring PRP for at least 4 weeks in the setting of intravitreal ranibizumab

  • Exam evidence of neovascularization of the angle (neovascularization of the iris alone is not an exclusion if it does not preclude deferring PRP for at least 4 weeks in the investigator's judgment).
  • If macular edema is present, it is considered to be primarily due to a cause other than diabetic macular edema.

    -- An eye should not be considered eligible if:

    • macular edema is present that is considered to be related to ocular surgery such as cataract extraction or
    • clinical exam and/or OCT suggest that vitreoretinal interface abnormalities disease (e.g., a taut posterior hyaloid or epiretinal membrane) is the primary cause of any macular edema.
  • An ocular condition is present (other than diabetic retinopathy) that, in the opinion of the investigator, might alter visual acuity during the course of the study (e.g., retinal vein or artery occlusion, uveitis or other ocular inflammatory disease, neovascular glaucoma, etc.).

    -- A vitreous or preretinal hemorrhage is not an exclusion if it is out of the visual axis and in the investigator's judgment is not having any affect on visual acuity.

  • Substantial cataract that, in the opinion of the investigator, is likely to be decreasing visual acuity by 3 lines or more (i.e., cataract would be reducing acuity to 20/40 or worse if eye were otherwise normal).
  • History of intravitreal anti-VEGF treatment at any time in the past 2 months.
  • History of corticosteroid treatment (intravitreal or peribulbar) at any time in the past 4 months.

    --If the investigator believes that there may still be a substantial effect 4 months after prior treatment (e.g., dose of intravitreal triamcinolone higher than 4 mg), the eye should not be included.

  • History of major ocular surgery (including vitrectomy, cataract extraction, scleral buckle, any intraocular surgery, etc.) within prior 4 months or anticipated within the next 6 months following randomization.
  • History of YAG capsulotomy performed within 2 months prior to randomization.
  • Aphakia.
  • Uncontrolled glaucoma (in investigator's judgment).
  • Exam evidence of severe external ocular infection, including conjunctivitis, chalazion, or substantial blepharitis
18 Years and older
Contact information is only displayed when the study is recruiting subjects
United States
NCT01489189 Protocol S
Not Provided
Not Provided
Diabetic Retinopathy Clinical Research Network
Diabetic Retinopathy Clinical Research Network
  • National Eye Institute (NEI)
  • Genentech, Inc.
Study Chair: Jeffrey G Gross, MD Carolina Retina Center
Diabetic Retinopathy Clinical Research Network
January 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP