Diabetic Macular EdemaPhase 2NCT00464685
Safety and Efficacy of a New Treatment in Combination With Laser for Diabetic Macular Edema
A Phase 2 study testing Dexamethasone and Laser Photocoagulation in people with Diabetic Macular Edema, run by Allergan at 2 sites in 2 countries.
Trial summary
This study will evaluate the safety and efficacy of the intravitreal implant of dexamethasone with laser treatment vs. laser treatment alone in patients with diabetic macular edema. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Diabetic Macular Edema
- What is being tested?
- Dexamethasone and Laser Photocoagulation
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 253 participants
- Where
- 2 sitesin 2 countries
- Study dates
- 1 May 2007to 8 Feb 2010
- Phase
- Phase 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
- 18 years of age or older with diabetic macular edema
- Decrease in visual acuity in at least one eye as a result of macular edema (20/50 or worse)
- Visual acuity in other eye no worse than 20/200
Who cannot join
- Known anticipated need for ocular surgery within next 12 months
- History of glaucoma or current high eye pressure requiring more than 1 medication
- Uncontrolled systemic disease
- Known steroid-responder
- Use of systemic steroids - Use of Warfarin/Heparin
Trial locations and contacts
2 sites in 2 countries.
2 sites in 2 countries
About this study
This study will evaluate the safety and efficacy of the intravitreal implant of dexamethasone with laser treatment vs. laser treatment alone in patients with diabetic macular edema.
- Conditions
- Diabetic Macular Edema
- Being tested
- Dexamethasone, Sham injection, Laser Photocoagulation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DexamethasoneDrug
Also called Posurdex®
Initial intravitreal injection of 700 µg dexamethasone with up to 1 additional treatment based on re-treatment criteria.
Sham injectionDrug
Initial sham injection with up to 1 additional treatment based on re-treatment criteria.
Laser PhotocoagulationProcedure or surgery
Initial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria.
| Study group | Role | What they receive |
|---|---|---|
| 700 µg Dexamethasone Implant and Laser Photocoagulation | Experimental | Initial intravitreal injection of 700 µg dexamethasone with up to 1 additional treatment based on re-treatment criteria. Initial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria. Receives: Drug: Dexamethasone; Procedure: Laser Photocoagulation |
| Sham Implant and Laser Photocoagulation | Sham comparator | Initial sham injection with up to 1 additional treatment based on re-treatment criteria. Initial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria. Receives: Drug: Sham injection; Procedure: Laser Photocoagulation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Percentage of Patients With at Least 10 Letters of Improvement in Best Corrected Visual Acuity (BCVA) From Baseline in the Study Eye
BCVA is measured in the study eye using an eye chart and is reported as the number of letters read correctly (ranging from 0 to 100 letters). The lower the number of letters read correctly on the eye chart, the worse the vision (or visual acuity). An increase in the number of letters read correctly indicates improvement and a decrease in the number of letters read correctly indicates a worsening.
Measured: Baseline, Month 12
Secondary outcomes (4)
Change From Baseline in BCVA in the Study Eye
BCVA is measured in the study eye using an eye chart and is reported as the number of letters read correctly (ranging from 0 to 100 letters). The lower the number of letters read correctly on the eye chart, the worse the vision (or visual acuity). An increase in the number of letters read correctly indicates improvement and a decrease in the number of letters read correctly indicates a worsening.
Measured: Baseline, Month 12
Change From Baseline in Central Subfield Retinal Thickness in the Study Eye
Central subfield retinal thickness is assessed in the study eye by Optical Coherence Tomography (OCT). The central subfield is an area in the retina (back of the eye). OCT is a laser-based, noninvasive, diagnostic system that provides high-resolution, three-dimensional images of the retina from which retinal thickness can be measured. A negative number change from baseline indicates an improvement and a positive number change from baseline indicates a worsening.
Measured: Baseline, Month 12
Change From Baseline in the Focal Leakage Area in the Study Eye
Focal leakage area in the study eye is assessed using fluorescein angiography. A positive number change from baseline indicates a worsening and a negative number change from baseline indicates an improvement.
Measured: Baseline, Month 12
Time to Retreatment in the Study Eye
Time to retreatment in the study eye is defined as the number of days between the initial treatment and re-treatment with the study medication.
Measured: 12 Months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted24 Apr 2007 (estimated)
- Study start1 May 2007
- Primary completion8 Feb 2010
- Study completion8 Feb 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Diabetic Macular EdemaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Outcomes assessor
- Enrolment
- 253 participants (actual)
Sponsor and investigators
- Lead sponsor
- Allergan
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Medical Director, Study director, Allergan
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00464685
- Sponsor's protocol ID
- 206207-012
- Status last verified
- Apr 2019
- First submitted
- 20 Apr 2007
- Last updated
- 24 Apr 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Callanan DG, Gupta S, Boyer DS, Ciulla TA, Singer MA, Kuppermann BD, Liu CC, Li XY, Hollander DA, Schiffman RM, Whitcup SM; Ozurdex PLACID Study Group. Dexamethasone intravitreal implant in combination with laser photocoagulation for the treatment of diffuse diabetic macular edema. Ophthalmology. 2013 Sep;120(9):1843-51. doi: 10.1016/j.ophtha.2013.02.018. Epub 2013 May 22.
PubMed 23706947
Study at a glance
From the registry record, last updated by the sponsor on 24 Apr 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Safety and Efficacy of a New Treatment in Combination With Laser for Diabetic Macular Edema
- ClinicalTrials.gov ID
- NCT00464685
- Acronym / sponsor ID
- 206207-012
- Conditions
- Diabetic Macular Edema
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 253 participants (actual)
- Lead sponsor
- AllerganIndustry (pharma, biotech, devices)
- Study start
- 1 May 2007 (actual)
- Primary completion
- 8 Feb 2010 (actual)
- Study completion
- 8 Feb 2010 (actual)
- First posted
- 24 Apr 2007 (estimated)
- Results
- Posted 4 Aug 2014
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will evaluate the safety and efficacy of the intravitreal implant of dexamethasone with laser treatment vs. laser treatment alone in patients with diabetic macular edema.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 700 µg Dexamethasone Implant and Laser Photocoagulation | Experimental | Drug: Dexamethasone, Procedure: Laser PhotocoagulationInitial intravitreal injection of 700 µg dexamethasone with up to 1 additional treatment based on re-treatment criteria. Initial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria. |
| Sham Implant and Laser Photocoagulation | Sham comparator | Drug: Sham injection, Procedure: Laser PhotocoagulationInitial sham injection with up to 1 additional treatment based on re-treatment criteria. Initial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- 18 years of age or older with diabetic macular edema
- Decrease in visual acuity in at least one eye as a result of macular edema (20/50 or worse)
- Visual acuity in other eye no worse than 20/200
Key exclusion criteria (5 listed)
- Known anticipated need for ocular surgery within next 12 months
- History of glaucoma or current high eye pressure requiring more than 1 medication
- Uncontrolled systemic disease
- Known steroid-responder
- Use of systemic steroids - Use of Warfarin/Heparin
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DexamethasoneAlso: Posurdex®Initial intravitreal injection of 700 µg dexamethasone with up to 1 additional treatment based on re-treatment criteria. | Drug | 700 µg Dexamethasone Implant and Laser Photocoagulation |
| Sham injectionInitial sham injection with up to 1 additional treatment based on re-treatment criteria. | Drug | Sham Implant and Laser Photocoagulation |
| Laser PhotocoagulationInitial laser photocoagulation with up to 3 additional treatments based on re-treatment criteria. | Procedure or surgery | 700 µg Dexamethasone Implant and Laser Photocoagulation, Sham Implant and Laser Photocoagulation |
Primary outcome
Percentage of Patients With at Least 10 Letters of Improvement in Best Corrected Visual Acuity (BCVA) From Baseline in the Study Eye
Time frame: Baseline, Month 12
BCVA is measured in the study eye using an eye chart and is reported as the number of letters read correctly (ranging from 0 to 100 letters). The lower the number of letters read correctly on the eye chart, the worse the vision (or visual acuity). An increase in the number of letters read correctly indicates improvement and a decrease in the number of letters read correctly indicates a worsening.
4 secondary outcomes
Change From Baseline in BCVA in the Study Eye
Time frame: Baseline, Month 12
Change From Baseline in Central Subfield Retinal Thickness in the Study Eye
Time frame: Baseline, Month 12
Change From Baseline in the Focal Leakage Area in the Study Eye
Time frame: Baseline, Month 12
Time to Retreatment in the Study Eye
Time frame: 12 Months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Apr 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 23706947Callanan DG, Gupta S, Boyer DS, Ciulla TA, Singer MA, Kuppermann BD, Liu CC, Li XY, Hollander DA, Schiffman RM, Whitcup SM; Ozurdex PLACID Study Group. Dexamethasone intravitreal implant in combination with laser photocoagulation for the treatment of diffuse diabetic macular edema. Ophthalmology. 2013 Sep;120(9):1843-51. doi: 10.1016/j.ophtha.2013.02.018. Epub 2013 May 22.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Medical Director study director
Allergan
2 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Dexamethasone and Laser Photocoagulation in people with Diabetic Macular Edema, run by Allergan at 2 sites in 2 countries.
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 3 inclusion and 5 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 24 Apr 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States, Canada. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
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 4 Aug 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?
Percentage of Patients With at Least 10 Letters of Improvement in Best Corrected Visual Acuity (BCVA) From Baseline in the Study Eye (time frame: Baseline, Month 12). 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 NCT00464685, which also lists 1 linked publication.
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 24 Apr 2019; AzTrials last refreshed its copy on 8 Nov 2026.