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Comparison of recombinant transforming growth factor-beta-2 and placebo as an adjunctive agent for macular hole
J T Thompson1, W E Smiddy, G A Williams
1Retina Specialists, Baltimore, Maryland, USA.
Objective:
This study aimed to compare the visual and anatomic results of macular hole surgery in eyes treated with recombinant transforming growth factor-beta-2 (TGF-beta2) or placebo.
Design:
The design was a prospective, multicenter, randomized, double-masked, placebo-controlled clinical study.
Participants:
One hundred thirty eyes with idiopathic macular holes of 1 year or less and a refracted Early Treatment Diabetic Retinopathy Study visual acuity of 20/80 or worse were treated with 1.1 microg recombinant TGF-beta2 or placebo to the macular hole after fluid-gas exchange.
Intervention:
The effect of recombinant TGF-beta2 as an adjunctive agent for macular hole surgery was evaluated.
Main Outcome Measures:
Closure of the macular hole and change in visual acuity at 3 months were measured.
Results:
The 3-month visits were completed for 120 eyes. The macular hole was closed at 3 months in 35 (61.4%) of 57 eyes treated with placebo and 49 (77.8%) of 63 eyes treated with recombinant TGF-beta2 (P = 0.08). The mean visual acuity gain was +6.4 letters in eyes receiving placebo and +8.9 letters in eyes treated with recombinant TGF-beta2 (P = 0.27). Visual acuity improved 2 or more lines in 23 (40.4%) of 57 eyes treated with placebo and 30 (47.6%) of 63 eyes treated with recombinant TGF-beta2 (P = 0.42). Intraocular pressure elevation greater than 30 mmHg was more common 2 weeks after surgery in eyes treated with recombinant TGF-beta2 (P < 0.001).
Conclusions:
Recombinant TGF-beta2 resulted in a similar proportion of successful closure of macular holes as placebo. There was no statistically significant visual acuity benefit with the use of recombinant TGF-beta2 for the treatment of macular holes.