The current standard treatment for some forms of AMD requires an injection directly into the eye approximately every four weeks. According to Kumar-Singh, gene therapy approaches to treat AMD are especially attractive because they will allow patients to be treated less frequently, reducing patient discomfort and lowering chances of infection and other side effects associated with frequent injections into the eye.
The researchers, including co-first author Kasmir Ramo, BS, research technician, believe that while CD59 has significant potential as a treatment for AMD, the gene therapy approach lends itself for application also in other eye and systemic disorders where low-level activation of complement has been implicated.
"Prior to initiating human clinical trials, we will need to perform extensive preclinical toxicology studies. In order to advance this study to Phase I clinical trials, we have formed a partnership with Hemera Biosciences Inc. to raise private venture capital," said Kumar-Singh.
AMD, which results in a loss of sharp, central vision, is the number one cause of visual impairment among Americans age 60 and older. While treatments are available for wet AMD, they do not prevent the progression of dry AMD, the form that affects 90 percent of AMD patients. Kumar-Singh noted, however, that the current study in combination with a previously published study from his laboratory suggests that CD59 may be useful for the treatment of both the dry and wet forms of AMD.
|Contact: Siobhan Gallagher|
Tufts University, Health Sciences