Pegaptanib sodium for macular edema secondary to central retinal vein occlusion.

Michael Altaweel // Publications // Apr 01 2009

PubMed ID: 19365011

Author(s): Wroblewski JJ, Wells JA 3rd, Adamis AP, Buggage RR, Cunningham ET Jr, Goldbaum M, Guyer DR, Katz B, Altaweel MM; Pegaptanib in Central Retinal Vein Occlusion Study Group. Pegaptanib sodium for macular edema secondary to central retinal vein occlusion. Arch Ophthalmol. 2009 Apr;127(4):374-80. doi: 10.1001/archophthalmol.2009.14. PMID 19365011

Journal: Archives Of Ophthalmology (Chicago, Ill. : 1960), Volume 127, Issue 4, Apr 2009

OBJECTIVES To assess the safety and efficacy of intravitreous pegaptanib sodium for the treatment of macular edema following central retinal vein occlusion (CRVO).

DESIGN This dose-ranging, double-masked, multicenter, phase 2 trial included subjects with CRVO for 6 months’ or less duration randomly assigned (1:1:1) to receive pegaptanib sodium or sham injections every 6 weeks for 24 weeks (0.3 mg and 1 mg, n=33; sham, n=32).

MAIN OUTCOME MEASURE Visual acuity at week 30.

RESULTS In the primary analysis at week 30, 12 of 33 (36%) subjects treated with 0.3 mg of pegaptanib sodium and 13 of 33 (39%) treated with 1 mg gained 15 or more letters from baseline vs 9 of 32 (28%) sham-treated subjects (P= .48 for 0.3 mg and P= .35 for 1 mg of pegaptanib sodium vs sham). In secondary analyses, subjects treated with pegaptanib sodium were less likely to lose 15 or more letters (9% and 6%; 0.3-mg and 1-mg pegaptanib sodium groups, respectively) compared with sham-treated eyes (31%; P= .03 for 0.3 mg and P= .01 for 1 mg of pegaptanib sodium vs sham) and showed greater improvement in mean visual acuity (+7.1 and +9.9, respectively, vs -3.2 letters with sham; P= .09 for 0.3 mg and P= .02 for 1 mg of pegaptanib sodium vs sham). By week 1, the mean central retinal thickness decreased in the 0.3-mg and 1-mg pegaptanib sodium groups by 269 microm and 210 microm, respectively, vs 5 microm with sham (P< .001).

CONCLUSIONS Based on this 30-week study, intravitreous pegaptanib sodium appears to provide visual and anatomical benefits in the treatment of macular edema following CRVO.

APPLICATION TO CLINICAL PRACTICE Benefits accrued with intravitreous pegaptanib sodium treatment of macular edema following CRVO suggest a role for vascular endothelial growth factor in the pathogenesis of this condition.

TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00088283.