Transcript Slide 1

Laser-RanibizumabTriamcinolone
for DME Study
DRCR.net Protocol I
Michael J. Elman, M.D.
Protocol Chair
Protocol Summary Study Objective
 To Evaluate safety and efficacy of the
following in eyes with center-involved
DME
1. intravitreal anti-VEGF treatment in
combination with prompt focal laser
2. intravitreal anti-VEGF treatment
with deferred focal laser
3. intravitreal corticosteroids in
combination with prompt focal laser2
Protocol Summary
Major Eligibility Criteria
Age >=18 years.
Type 1 or type 2 diabetes
Center involved DME responsible for
VA of 20/32 or worse
OCT central subfield thickness >250µ
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Protocol Summary
Sample Size
Minimum of 842
eyes
Subjects may have
one or two study
eyes.
701 subjects
assuming 20%
have 2 study eyes
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Protocol Summary
Treatment Groups
Randomization to one of the
following 4 groups:
 Group A: Sham injection + focal laser
 Group B: 0.5 mg injection of intravitreal
Ranibizumab + focal laser
 Group C: 0.5 mg injection of intravitreal
Ranibizumab + deferred focal laser
 Group D: 4 mg injection of intravitreal
Triamcinolone + focal laser
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Protocol Summary Efficacy
Outcomes
Primary Outcome:
• VA at 1 year
Secondary Outcomes:
• Change in OCT CSF and retinal
volume
• # of injections in first year
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Protocol Summary
Main Safety Outcomes
Injected-related:
• Endophthalmitis, retinal detachment
Ocular drug-related:
• Inflammation, cataract, cataract surgery,
increased IOP, glaucoma medications,
glaucoma surgery
Systemic drug-related:
• Cardiovascular events
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Protocol Summary
Follow-up Schedule
First Year
Visits every 4 weeks
Second and Third Years
Visit schedule depends on treatment
group
If failure met, visits occur every 4
months regardless of trt group
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Retreatment Criteria:
Injections During Follow-Up
Group A - sham
Groups B and C - ranibizumab
Group D - Triamcinolone injection is
given if one has not been given in the
prior 15 weeks; otherwise a sham
injection is given.
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Retreatment Criteria
Through 12-Week Visit
Everyone gets an injection (Drug or Sham)
• Visual acuity score does not matter
• OCT score does not matter
Injection can only be skipped if an adverse
event occurs
Rationale: ensures that enough treatment
is given to accurately assess efficacy
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Retreatment Criteria for Injection at
16 and 20-week Visits
 VA letter score >=84
or OCT < 250:
• Can defer injection
 VA letter score <84
(worse than 20/20)
AND OCT > 250:
• Give injection
Rationale: Ensures that eyes assigned to triamcinolone
with vision less than 20/20 will receive at least 2
injections.
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Retreatment Criteria for Injection
24 to 48 Week Visit
Eyes are assigned to 1 of 4 categories:
1. VA letter score >=84 (20/20 or better) or
OCT <250:
•
Decision to reinject at investigator
discretion
2. Evidence of improvement at any visit
since the last non-sham injection (or
baseline for group A):
•
An injection is given
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Retreatment Criteria for Injection
24 to 48 Week Visit
3. Failure criteria (next slide) not met,
and no improvement at any visit
since the last non-sham injection (or
baseline for group A):
•
Decision to reinject is at investigator
discretion.
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Retreatment Criteria for Injection
24 to 48 Week Visit
4. Failure defined as:
VA letter score 10 or more worse than
baseline, OCT CSF >=250 microns, DME
present on clinical exam that is the cause of
the visual loss, complete laser given AND
≥13w since last laser treatment with no
improvement since the last laser treatment
• The eye can be treated at investigator
discretion.
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Retreatment Criteria:
Focal Photocoagulation
In general, focal photocoagulation will be
given 3 to 10 days later following each
injection unless one of the following is
present:
• Focal laser given in the previous 13 weeks
• Maximal focal laser has already been given
• The central subfield thickness is <250
microns and there is no edema threatening
the fovea
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Retreatment Criteria for Laser
Group C – Laser Deferred
No focal photocoagulation before 24
weeks
At the 24-week or later visit, if there is no
evidence of improvement from the last 2
consecutive injections and the
investigator believes that macular edema
is present for which focal
photocoagulation is indicated, the eye
should receive focal photocoagulation. 16
Retreatment Criteria at and after
52-Week Visit
Subjects are unmasked to treatment grp
Eyes assigned to Sham and
Triamcinolone groups start every 16 wk
visits and discontinue sham injections
Eyes assigned to ranibizumab continue
every 4 week visits unless injections are
deferred due to success or no
improvement – visits then move to 8 or
16 wk intervals
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Retreatment Criteria at and
after
52-Week Visit
 Failure/futility defined as:
VA letter score <84, OCT CSF >=250 microns,
DME present on clinical exam that is the cause
of the visual loss, complete laser given AND
either 1) ≥13w since last laser treatment with
no improvement since the last laser treatment
and VA 10 or more worse than baseline OR 2)
≥ 29w since last laser with no improvement
since the last laser treatment
• The eye can be treated at investigator
discretion.