The diabetic retinopathy clinical research network
This presentation is the property of its rightful owner.
Sponsored Links
1 / 21

The Diabetic Retinopathy Clinical Research Network PowerPoint PPT Presentation


  • 88 Views
  • Uploaded on
  • Presentation posted in: General

The Diabetic Retinopathy Clinical Research Network. DRCR.net Prompt PRP vs Ranibizumab+Deferred PRP for PDR Study Jeffrey G. Gross, M.D. – Protocol Chair

Download Presentation

The Diabetic Retinopathy Clinical Research Network

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


The diabetic retinopathy clinical research network

The Diabetic Retinopathy Clinical Research Network

DRCR.net Prompt PRP vsRanibizumab+Deferred PRP for PDR Study

Jeffrey G. Gross, M.D. – Protocol Chair

Supported through a cooperative agreement from the National Eye Institute and the National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Department of Health and Human Services EY14231, EY14229, EY018817 


Background

Background

  • Current treatment for PDR is panretinal photocoagulation (PRP)

    • Inherently destructive

    • Adverse effects on visual function

  • Some eyes with PDR+DME now receive anti-VEGF as standard care for DME

  • Would initial treatment of PDR with intravitreal anti-VEGF delay or prevent need for PRP?

2


Study objective and treatment groups

Study Objective and Treatment Groups

To determine if visual acuity outcomes at 2 years in eyes with PDR (with or without concurrent DME) that receive anti-VEGF therapy with deferred PRP are non-inferior to those in eyes that receive prompt PRP therapy.

(Note: Study ranibizumab may be given as needed for DME using Protocol I retreatment as guidelines.)

  • Prompt PRP

0.5mg ranibizumab with deferred PRP

3


Important secondary objectives assuming visual acuity outcomes are non inferior

Important Secondary Objectives(assuming visual acuity outcomes are non-inferior)

  • Compare visual function outcomes (including Humphrey visual field testing and study participant self-reports of visual function)

  • Determine percent of eyes not requiring PRP when intravitreal anti-VEGF is given in the absence of prompt PRP

  • Compare safety outcomes

  • Perform cost effectiveness analysis

4


Sample size

Sample Size

  • Minimum of 380 eyes

  • Subjects may have one or two study eyes

  • 316 participants assuming 20% have two study eyes

5


Major inclusion criteria

Major Inclusion Criteria

  • Age ≥ 18 years

  • Type 1 or 2 diabetes

  • PDR for which PRP is planned but in the investigator’s opinion can be deferred for at least 4 weeks if an intravitreal anti-VEGF injection is given

  • Visual acuity (Snellen equivalent) 20/320 or better

  • Note: eyes with or without DME may be enrolled

6


Major exclusion criteria

Major Exclusion Criteria

  • Systemic

    • Significant renal disease

    • BP > 180/110

    • Cardiac event or stroke within 4 months

  • Study eye

    • Prior PRP

    • Tractional retinal detachment involving the macula

    • NV of the angle

    • History of intravitreal anti-VEGF within past 2 months

    • History of corticosteriod in the past 4 months


Testing procedures undilated within 14 days of randomization

Testing Procedures – Undilatedwithin 14 days of randomization

  • Questionnaires (except in participants with two study eyes)

    • NEI-VFQ, UAB-LLQ, WPAI, and TTO

  • Humphrey visual field testing (30-2 and 60-4) – dilation may be needed depending on pupil size

    • Required at sites with certified HVF equipment


Testing procedures undilated day of randomization

Testing Procedures – UndilatedDay of Randomization

  • E-ETDRS best-corrected visual acuity in each eye

  • Binocular E-ETDRS using the participant’s everyday glasses or contacts

  • IOP in the study eye


Testing procedures dilated

Testing Procedures - Dilated

  • OCT of study eye (within 8 days)

  • Fundus photographs of study eye (within 21 days)

    • If NV is not captured on 7F or 4W, additional fields should be taken to capture NV

    • This is documented on protocol specific form

  • Ocular exam in both eyes (day of randomization)


Prp treatment

PRP Treatment

  • Prompt PRP group receives 1200 to 1600 burns initiated on day of randomization (or within 14 days of baseline if injection for DME given) and completed within 8 weeks.

  • Anti-VEGF+Deferred PRP may receive PRP only if failure/futility criteria are met

    • Protocol chair approval MUST be obtained before PRP is given in some cases of failure/futility

11


Follow up schedule

Follow-up Schedule

  • Assessment Visits every 16 weeks in both groups

  • PDR Treatment Visits every 4 weeks (deferred PRP group only)…interval may only be extended if PRP is given

Baseline to

1 Year

  • Assessment Visits every 16 weeks in both groups

  • PDR Treatment Visit every 4-16w (deferred PRP group only)…interval is extended if injections for PDR continually deferred

  • Primary outcome visit at 2 years

1 Year to

3 Years

4 to 5

Years

  • Annual visits for data collection only

  • Treatment as part of usual care


Non annual testing procedures

Non-Annual Testing Procedures

  • E-ETDRS best-corrected visual acuity in both eyes

  • Ocular exam and IOP in the study eye (extended ophthalmoscopy in deferred PRP group)

  • OCT only if eye

    • 1) has initiated DME treatment,

    • 2) will be evaluated for initial DME treatment, or

    • 3)10 letter unexplained loss since last visit.

  • Fundus photography only if PRP will be initiated in an eye assigned to IVR+deferred PRP

  • WPAI questionnaire at 16-week interval visits (except in OU participants)


Annual testing procedures

Annual Testing Procedures

  • Binocular E-ETDRS using the participant’s everyday glasses or contacts

  • Questionnaires (except in OU participants)

    • NEI-VFQ, UAB-LLQ, WPAI, and TTO

    • May be completed at home prior to visit (within 14 days)

  • Fundus photography

  • Humphrey visual field testing (30-2 and 60-4)

    • Required at sites with certified HVF equipment


Anti vegf injections for pdr deferred prp group

Anti-VEGF Injections for PDR (Deferred PRP Group)

  • Injections every 4 weeks through 12- week visit

    • NV status does not matter

    • Injection can only be skipped if an adverse event occurs

    • If at anytime the investigator thinks PRP is needed within 1 week to avoid substantial vision loss, PRP may be given once protocol chair approval obtained

15


Injection retreatment criteria for pdr deferred prp group

Injection Retreatment Criteria for PDR (Deferred PRP Group)

  • Starting at the 16-week visit, each eye will be categorized into one of the following 5 groups:

    1. Resolved

  • NV of the retina, disc, and iris/angle* is absent.

  • Decision to re-inject is at investigator discretion. PRP should not be given.

    *if angle is examined

16


Injection retreatment criteria for pdr deferred prp group1

Injection Retreatment Criteria for PDR (Deferred PRP Group)

2. Improved

  • NV of the retina, disc, or iris/angle* still persists, but there is evidence of “improvement” since the last visit.

  • “Improvement” defined as a decrease in the size of NV or diminished density of NV

  • An injection is given. PRP should not be given.

    *if angle is examined

17


Injection retreatment criteria for pdr deferred prp group2

Injection Retreatment Criteria for PDR (Deferred PRP Group)

3. Stable

  • NV of the retina, disc, and iris/angle* is clinically unchanged since the last visit.

  • Once the eye meets criteria for stability, at least 2 more injections must be given, each one month apart.  Further reinjection is then at investigator discretion as long as the eye remains stable.  PRP should not be given. 

    *if angle is examined

18


Injection retreatment criteria for pdr deferred prp group3

Injection Retreatment Criteria for PDR (Deferred PRP Group)

4. Not fully treated

  • Failure/futility criteria not met and recurrent or worsening NV of the retina, disc, or iris is present in an eye that has had fewer than 4 injections over the previous 4 months or there is vitreous or preretinal hemorrhage precluding assessment. 

  • An injection is given.  PRP should not be given. 

19


Injection retreatment criteria for pdr deferred prp group4

Injection Retreatment Criteria for PDR (Deferred PRP Group)

5. Failure/futility

  • One of the following criteria are met:

    • NV worse than last visit such that it is greater in extent than baseline and at least 4 injections given over previous 4 months

    • NV of the angle

    • PRP needed within 1 week to avoid substantial vision loss and protocol chair approval obtained

    • Persistent NV after 1.5 years of follow-up despite anti-VEGF and protocol chair approval obtained

  • Decision to re-inject is at investigator discretion.  PRP may be given.

20


Follow up treatment for dme

Follow-Up Treatment for DME

  • If DME develops during follow-up, treatment is at investigator discretion using study ranibizumab and/or focal/grid laser with Protocol I retreatment criteria as guidelines

  • Additional follow-up visits for DME retreatment are at the discretion of the investigator (not part of visit schedule)

21


  • Login