When the vitreous humor shrinks, the strong attachment results in a pulling force on the retina, which may lead to visual distortion, decreased visual acuity and central blindness. When the disease progresses the traction may eventually result in the formation of a hole in the macula (called a macular hole).
JETREA ® breaks down the protein fibers which cause the abnormal traction between the vitreous and the macula that causes VMT. By dissolving these proteins, JETREA ® releases the traction, and helps to complete the detachment of the vitreous from the macula.
JETREA ® can also be used when VMT has progressed and caused a small hole in the macula (central part of the light-sensitive layer at the back of the eye).
The current approach in the EU is 'observation', 'watchful waiting' or 'watch and wait' until a patient becomes a candidate for surgical treatment, usually at a late stage of the disease. [ 1 ] , [ 2 ] A patient would then receive a surgical procedure and repair of the retina. However, for many patients this is not a suitable option, as irreversible damage to the retina may have already occurred. [ 3 ] , [ 4 ]ThromboGenics is continuing to work closely with Alcon to ensure patients across Europe and rest of the world can access this innovative medicine and receive JETREA ® as soon as it becomes available in the respective countries. References [ 1 ] . Idiopathic macular hole. American Academy of Ophthalmology; 2008 [ 2 ] . Stalmans P. Management and intervention strategies for symptomatic vitreomacular adhesions. Retinal Physician 2011 [ 3 ] . Koerner F & Garweg J. Vitrectomy for macular pucker and vitreomacular traction syndrome. Doc Ophthalmol 1999;97:449-458 [ 4 ] . Dugel PU, Brown DM, Humayun MS et al. Symptomatic vitreomacular adhesion: diagnosis, pathologic implications, and management. Retina Today 2011;(Suppl):1-14 About JETREA ® (ocriplasmin) JETREA ® (ocriplasmin) is a truncated form of human plasmin. In the US, JETREA ® is indicated for the treatment of symptomatic VMA. In Europe, JETREA ® is indicated for the treatment of vitreomacular traction (VMT), including when associated with macular hole of diameter ≤ 400 microns. JETREA ® is a selective proteolytic enzyme that cleaves fibronectin, laminin and collagen, three major components of the vitreoretinal interface that play an important role in vitreomacular adhesion. JETREA ® has been evaluated in two multi-center, randomized, double-masked Phase III trials conducted in the U.S. and Europe involving 652 patients with vitreomacular adhesion. Both studies met the primary endpoint of resolution of VMA at day 28. JETREA's Phase III program found that 26.5% of patients treated with ocriplasmin saw resolution of VMA, compared with 10.1% of patients receiving placebo (p<0.01). The Phase III program also showed that JETREA was generally well tolerated with most adverse events being transient and mild in severity.