Diabetic Macular EdemaNCT02979665
Changes to the Retina Following Anti-VEGF Treatments for Diabetic Macular Edema
An observational study of Diabetic Macular Edema, run by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's.
Trial summary
anti-VEGF therapy is an established method to control leakage and abnormal growth of retinal blood vessels. Questions on the long-term effect on the retina, intraocular pressure and on the overall retinal perfusion from these treatments remain to be answered. 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?
- Ranibizumab Ophthalmic
- How many people
- 51 participants
- Where
- No sites listed yet
- Study dates
- Sep 2014to Aug 2017
- Phase
- Observational
- Are there results?
- None posted in the registry
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
Study population: DR consults referred to the Ivey Eye Institute and requiring anti-VEGF injections in at least one eye due to DME will be recruited into the study.
Who may be able to join
- DME patients
- Require anti-VEGF injections in at least one eye
Who cannot join
- Advanced lens opacity or cataract that could affect diagnostic testing
- Prior retinal treatment (PRP, focal laser or surgery within 6 months of participation)
About this study
Official title: A Clinico-Pathological Study of the Structural and Functional Changes to the Retina Following Anti-VEGF Treatments for Diabetic Macular Edema
anti-VEGF therapy is an established method to control leakage and abnormal growth of retinal blood vessels. Questions on the long-term effect on the retina, intraocular pressure and on the overall retinal perfusion from these treatments remain to be answered. The purpose of the study was to evaluate changes in the retina following anti-VEGF treatment over time, using structural and functional diagnostic tests.
Read the detailed description
Diabetic retinopathy (DR) causes changes in the capillaries that nourish the retina. Two treatments clinically used for DR are laser photocoagulation to reduce the angiogenic drive by knocking off metabolically active retina and anti-VEGF drugs for diabetic macular edema (DME). DME affects approximately 2.5% of the nearly 2.4 million Canadians with diabetes, or approximately 60,000 Canadians, making it a major cause of adult-onset vision loss. DME occurs when blood vessels in the retina of diabetic patients become leaky resulting in unwanted fluid accumulation in the center of vision known as the macula. If not treated, this can lead to blindness. Originally used in the treatment of age-related macular degeneration (AMD), anti-VEGF drugs are increasingly used to control leakage and abnormal growth of retinal blood vessels. Numerous questions have emerged following the usage of anti-VEGF medications in the eye such as their long-term effects of these drugs on intraocular pressure and on the overall retinal perfusion. By recruiting DR patients requiring anti-VEGF treatment for DME, this study will answer whether long-term usage of anti-VEGF will result in structural and functional changes to the retina.
- Conditions
- Diabetic Macular Edema
- Being tested
- Ranibizumab Ophthalmic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ranibizumab OphthalmicDrug
Also called Lucentis
Ranibizumab (trade name Lucentis among others) is a monoclonal antibody fragment (Fab) created from the same parent mouse antibody as bevacizumab. It is an anti-angiogenic that has been approved to treat the "wet" type of age-related macular degeneration (AMD, also ARMD), a common form of age-related vision loss and diabetic macular edema (DME).
| Study group | Role | What they receive |
|---|---|---|
| Ranibizumab Ophthalmic | DME consults requiring anti-VEGF treatment Receives: Drug: Ranibizumab Ophthalmic | |
| Control | DME consults not requiring anti-VEGF |
What is being measured
The primary outcome is the main question the study is designed to answer.
Effects of anti-VEGF drugs on intraocular pressure (mmHg)
Measured: 2 year
Secondary outcomes (1)
Effects of anti-VEGF drugs on macular thickness (um)
Measured: 2 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Dec 2016 (estimated)
- Study startSep 2014
- Primary completionAug 2017
- Study completionAug 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (5)Papers the sponsor has linked to this study.
- Other trials for Diabetic Macular EdemaStudies of the same condition, open and under way.
- More trials run by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph'sThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 51 participants (actual)
Sponsor and investigators
- Lead sponsor
- London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Cindy Hutnik, MD, PhD, Principal investigator, St. Joseph's Health Care London
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02979665
- Sponsor's protocol ID
- 105570
- Status last verified
- Apr 2019
- First submitted
- 25 Nov 2016
- Last updated
- 2 May 2019
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Simo R, Hernandez C. Intravitreous anti-VEGF for diabetic retinopathy: hopes and fears for a new therapeutic strategy. Diabetologia. 2008 Sep;51(9):1574-80. doi: 10.1007/s00125-008-0989-9. Epub 2008 Apr 11.
PubMed 18404258Osaadon P, Fagan XJ, Lifshitz T, Levy J. A review of anti-VEGF agents for proliferative diabetic retinopathy. Eye (Lond). 2014 May;28(5):510-20. doi: 10.1038/eye.2014.13. Epub 2014 Feb 14.
PubMed 24525867Singh RS, Kim JE. Ocular hypertension following intravitreal anti-vascular endothelial growth factor agents. Drugs Aging. 2012 Dec;29(12):949-56. doi: 10.1007/s40266-012-0031-2.
PubMed 23179897Mathalone N, Arodi-Golan A, Sar S, Wolfson Y, Shalem M, Lavi I, Geyer O. Sustained elevation of intraocular pressure after intravitreal injections of bevacizumab in eyes with neovascular age-related macular degeneration. Graefes Arch Clin Exp Ophthalmol. 2012 Oct;250(10):1435-40. doi: 10.1007/s00417-012-1981-0. Epub 2012 Mar 21.
PubMed 22434210Neubauer AS, Kook D, Haritoglou C, Priglinger SG, Kampik A, Ulbig MW, Ceklic L. Bevacizumab and retinal ischemia. Ophthalmology. 2007 Nov;114(11):2096. doi: 10.1016/j.ophtha.2007.05.057. No abstract available.
PubMed 17980746
Study at a glance
From the registry record, last updated by the sponsor on 2 May 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Clinico-Pathological Study of the Structural and Functional Changes to the Retina Following Anti-VEGF Treatments for Diabetic Macular Edema
- ClinicalTrials.gov ID
- NCT02979665
- Acronym / sponsor ID
- 105570
- Conditions
- Diabetic Macular Edema
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 51 participants (actual)
- Lead sponsor
- London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph'sUniversity, hospital or other
- Study start
- Sep 2014
- Primary completion
- Aug 2017 (actual)
- Study completion
- Aug 2017 (actual)
- First posted
- 1 Dec 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
anti-VEGF therapy is an established method to control leakage and abnormal growth of retinal blood vessels. Questions on the long-term effect on the retina, intraocular pressure and on the overall retinal perfusion from these treatments remain to be answered. The purpose of the study was to evaluate changes in the retina following anti-VEGF treatment over time, using structural and functional diagnostic tests.
Detailed description
Diabetic retinopathy (DR) causes changes in the capillaries that nourish the retina. Two treatments clinically used for DR are laser photocoagulation to reduce the angiogenic drive by knocking off metabolically active retina and anti-VEGF drugs for diabetic macular edema (DME). DME affects approximately 2.5% of the nearly 2.4 million Canadians with diabetes, or approximately 60,000 Canadians, making it a major cause of adult-onset vision loss. DME occurs when blood vessels in the retina of diabetic patients become leaky resulting in unwanted fluid accumulation in the center of vision known as the macula. If not treated, this can lead to blindness. Originally used in the treatment of age-related macular degeneration (AMD), anti-VEGF drugs are increasingly used to control leakage and abnormal growth of retinal blood vessels. Numerous questions have emerged following the usage of anti-VEGF medications in the eye such as their long-term effects of these drugs on intraocular pressure and on the overall retinal perfusion. By recruiting DR patients requiring anti-VEGF treatment for DME, this study will answer whether long-term usage of anti-VEGF will result in structural and functional changes to the retina.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Ranibizumab Ophthalmic | – | Drug: Ranibizumab OphthalmicDME consults requiring anti-VEGF treatment |
| Control | – | –DME consults not requiring anti-VEGF |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- DR consults referred to the Ivey Eye Institute and requiring anti-VEGF injections in at least one eye due to DME will be recruited into the study.
Key inclusion criteria (2 listed)
- DME patients
- Require anti-VEGF injections in at least one eye
Key exclusion criteria (2 listed)
- Advanced lens opacity or cataract that could affect diagnostic testing
- Prior retinal treatment (PRP, focal laser or surgery within 6 months of participation)
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 |
|---|---|---|
| Ranibizumab OphthalmicAlso: LucentisRanibizumab (trade name Lucentis among others) is a monoclonal antibody fragment (Fab) created from the same parent mouse antibody as bevacizumab. It is an anti-angiogenic that has been approved to treat the "wet" type of age-related macular degeneration (AMD, also ARMD), a common form of age-related vision loss and diabetic macular edema (DME). | Drug | Ranibizumab Ophthalmic |
Primary outcome
Effects of anti-VEGF drugs on intraocular pressure (mmHg)
Time frame: 2 year
1 secondary outcome
Effects of anti-VEGF drugs on macular thickness (um)
Time frame: 2 year
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 May 2019.
- Background: PubMed 18404258Simo R, Hernandez C. Intravitreous anti-VEGF for diabetic retinopathy: hopes and fears for a new therapeutic strategy. Diabetologia. 2008 Sep;51(9):1574-80. doi: 10.1007/s00125-008-0989-9. Epub 2008 Apr 11.
- Background: PubMed 24525867Osaadon P, Fagan XJ, Lifshitz T, Levy J. A review of anti-VEGF agents for proliferative diabetic retinopathy. Eye (Lond). 2014 May;28(5):510-20. doi: 10.1038/eye.2014.13. Epub 2014 Feb 14.
- Background: PubMed 23179897Singh RS, Kim JE. Ocular hypertension following intravitreal anti-vascular endothelial growth factor agents. Drugs Aging. 2012 Dec;29(12):949-56. doi: 10.1007/s40266-012-0031-2.
- Background: PubMed 22434210Mathalone N, Arodi-Golan A, Sar S, Wolfson Y, Shalem M, Lavi I, Geyer O. Sustained elevation of intraocular pressure after intravitreal injections of bevacizumab in eyes with neovascular age-related macular degeneration. Graefes Arch Clin Exp Ophthalmol. 2012 Oct;250(10):1435-40. doi: 10.1007/s00417-012-1981-0. Epub 2012 Mar 21.
- Background: PubMed 17980746Neubauer AS, Kook D, Haritoglou C, Priglinger SG, Kampik A, Ulbig MW, Ceklic L. Bevacizumab and retinal ischemia. Ophthalmology. 2007 Nov;114(11):2096. doi: 10.1016/j.ophtha.2007.05.057. No abstract available.
- Canadian Diabetes Association. Eye Damage (Diabetic Retinopathy).Link provided by the sponsor.
Related trials for Diabetic Macular Edema
Active, not recruitingObservational study
Real World Evidence in China: Faricimab Use in Diabetic Macular Edema, Retinal Vein Occlusion, and Neovascular Age-Related Macular Degeneration (The Farseeing Study)
Diabetic Macular Edema, Neovascular Age-related Macular Degeneration
Active, not recruitingPhase 2
Long-Term Follow-Up Study of RGX-314 Administered in the Suprachoroidal Space for Participants With and Without Diabetic Retinopathy
Diabetic Retinopathy, DR
RecruitingPhase 3
A Phase 3 Trial for Intravitreal Injection of 4D-150 in Adults With Diabetic Macular Edema (DME).
Diabetic Macular Edema (DME)
RecruitingPhase 2
Oral N-Acetylcysteine on Diabetic Macular Edema
Diabetic Macular Edema (DME)
Active, not recruitingPhase 3
COMO: A Phase 3 Randomized, Double-Masked Study Comparing the Efficacy of EYP-1901 Against Aflibercept in DME
Diabetic Macular Edema, DME
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.
Cindy Hutnik, MD, PhD principal investigator
St. Joseph's Health Care London
Questions about this trial
What is this clinical trial studying?
An observational study of Diabetic Macular Edema, run by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's.
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 2 inclusion and 2 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 2 May 2019. Status can change between updates, so confirm with the study contact before making plans.
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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Effects of anti-VEGF drugs on intraocular pressure (mmHg) (time frame: 2 year). 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 NCT02979665, which also lists 5 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 2 May 2019.