AMD another method of control

[Mike Bartolatz]

1: Hum Gene Ther. 2006 Feb;17(2):167-76. Related Articles, Links


Comment in:
Hum Gene Ther. 2006 Feb;17(2):177-9.

Adenoviral vector-delivered pigment epithelium-derived factor for neovascular age-related macular degeneration: results of a phase I clinical trial.

Campochiaro PA, Nguyen QD, Shah SM, Klein ML, Holz E, Frank RN, Saperstein DA, Gupta A, Stout JT, Macko J, DiBartolomeo R, Wei LL.

Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA. pcampo@jhmi.edu

Twenty-eight patients with advanced neovascular age-related macular degeneration (AMD) were given a single intravitreous injection of an E1-, partial E3-, E4-deleted adenoviral vector expressing human pigment epithelium- derived factor (AdPEDF.11). Doses ranging from 10(6) to 10(9.5) particle units (PU) were investigated. There were no serious adverse events related to AdPEDF.11 and no dose-limiting toxicities. Signs of mild, transient intraocular inflammation occurred in 25% of patients, but there was no severe inflammation. Six patients experienced increased intraocular pressure that was easily controlled by topical medication. All adenoviral cultures were negative. At 3 and 6 months after injection, 55 and 50%, respectively, of patients treated with 10(6)-10(7.5) PU and 94 and 71% of patients treated with 10(8)-10(9.5) PU had no change or improvement in lesion size from baseline. The median increase in lesion size at 6 and 12 months was 0.5 and 1.0 disk areas in the low-dose group compared with 0 and 0 disk areas in the high-dose group. These data suggest the possibility of antiangiogenic activity that may last for several months after a single intravitreous injection of doses greater than 10(8) PU of AdPEDF.11. This study provides evidence that adenoviral vector-mediated ocular gene transfer is a viable approach for the treatment of ocular disorders and that further studies investigating the efficacy of AdPEDF.11 in patients with neovascular AMD should be performed.

Publication Types:
Clinical Trial, Phase I
Multicenter Study

PMID: 16454650 [PubMed - indexed for MEDLINE]