Open Label Extension of a Clinical Trial of Intravitreal Triamcinolone for Diabetic Macular Oedema-TDMX Study
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ClinicalTrials.gov Identifier: NCT00148330 |
Recruitment Status :
Completed
First Posted : September 7, 2005
Last Update Posted : June 30, 2010
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This open label extension will treat all the eyes of study participants with active study medication (intravitreal triamcinolone) as well as standard laser treatment where appropriate.
The specific aims will be to test the following hypotheses:
- That intravitreal triamcinolone for diabetic macular oedema that persists or recurs after laser treatment remains efficacious over five years
- That intravitreal triamcinolone for diabetic macular oedema that persists or recurs after laser treatment retains a manageable and acceptable safety profile over five years
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Diabetic Macular Oedema | Drug: Triamcinolone acetate | Phase 2 Phase 3 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 64 participants |
Allocation: | Non-Randomized |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | An Open Label Extension of the Phase II/III Clinical Trial of Intravitreal Triamcinolone on the Effects and Safety of Clinically Significant Diabetic Macular Oedema That Persists After Laser Treatment |
Study Start Date : | May 2005 |
Actual Primary Completion Date : | July 2008 |
Actual Study Completion Date : | July 2008 |

- Drug: Triamcinolone acetate
When indicated, intravitreal triamcinolone (0.1 ml of Kenacort 40© [40mg/ml triamcinolone acetonide, Bristol-Myers Squibb pharmaceuticals, Australia]) was injected into the vitreous under sterile conditions in a minor procedures area.Other Name: Kenacort 40©
- Increase of ≥5 letters at the 5-year study visit on a LogMAR chart compared with (a) the initial baseline level and (b) the level at the 2-year study visit. [ Time Frame: 3 year extension, total 5 years study from baseline ]
Changes from Baseline to 5 years: Improvement of ≥5 letters after 5 years was found in 14/33 (42%) eyes initially treated with triamcinolone compared with 11/34 (32%) eyes initially treated with placebo (zGEE=0.81, P=0.4).
Changes from 2 to 5 years (open-label extension):Improvement of ≥5 letters of best-corrected visual acuity was found in 8/29 (28%) eyes initial-triamcinolone compared with 7/28 (25%) initial-placebo eyes (zGEE=0.20, P=0.8).
- Incidence of moderate or severe adverse events over the 3 years of the open-label extension [ Time Frame: 3 year extension study, total 5 year study from baseline ]The incidence of cataract surgery declined in the third year: 5/11 (45%) eyes from the initial-triamcinolone group that were phakic at the beginning of the 3rd year required cataract surgery.
- Change in macular thickness by OCT [ Time Frame: 3 year extension, total 5 year study from the baseline ]
Changes from Baseline to 5 years: Foveal thickness had decreased by 30µm (95% confidence interval, -47 to 107µm) less in the initial-triamcinolone group than in the initial-placebo group at 5 years (zGEE=0.76, P=0.45).
Changes from 2 to 5 years (open-label extension):Foveal thickness had actually increased slightly on average in the initial-triamcinolone group, but decreased in initial-placebo eyes. Overall it had decreased by 70µm (95% confidence interval, -1 to 140µm) more in the placebo group than in the treatment group between 2 and 5 years (zGEE=1.93, P=0.05).
- Any change in visual acuity [ Time Frame: 3 year extension, total 5 year study from the baseline ]Loss of ten or more letters was found in 6/33 (18%) initial-triamcinolone eyes compared with 8/34 (24%) initial-placebo eyes.
- Number of laser treatments required. [ Time Frame: 3 year extension study, total 5 year study from baseline ]During the third to fifth years of the study, a similar proportion of eyes from the 2 groups had macular edema that warranted laser treatment: initial-triamcinolone, 5/29 (17%); initial-placebo, 6/28 (21%).

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Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
Participation in the study will be offered to all patients at the conclusion of the TDMO study. Currently we are still following 64 of the 69 (93%) eyes that were initially entered into the study that had reduced vision from diabetic macular oedema at baseline.
Exclusion Criteria:
- Uncontrolled glaucoma
- Loss of vision due to other causes (e.g. age related macular degeneration, myopic macular degeneration)
- known allergies to triamcinolone acetate, patient is already receiving systemic steroid treatment, intercurrent severe disease such as septicemia, any condition which would affect follow-up or photographic documentation (e.g. geographical, psycho-social, media opacities)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00148330
Australia, New South Wales | |
Save Sight Institute, Sydney/Sydney Eye Hospital Campus, University of Sydney | |
Sydney, New South Wales, Australia, 2000 |
Principal Investigator: | Mark C Gillies, MBBS, PhD | Save Sight Institute, Deaprtment of Clinical Ophthalmology, University of Sydney |
Other Publications:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Professor Mark Gillies, Save Sight Institute, The University of Sudyney |
ClinicalTrials.gov Identifier: | NCT00148330 |
Other Study ID Numbers: |
NHMRC project 402573 |
First Posted: | September 7, 2005 Key Record Dates |
Last Update Posted: | June 30, 2010 |
Last Verified: | May 2005 |
Diabetic macular oedema Triamcinolone acetate Intravitreal injection Clinical trial Laser treatment |
Macular Edema Edema Macular Degeneration Retinal Degeneration Retinal Diseases Eye Diseases |
Triamcinolone Anti-Inflammatory Agents Glucocorticoids Hormones Hormones, Hormone Substitutes, and Hormone Antagonists Physiological Effects of Drugs |