View clinical trials related to Retinitis.
Filter by:The National Ophthalmic Disease Genotyping and Phenotyping Network (eyeGENE(R)) is a genomic medicine initiative created by the National Eye Institute (NEI), part of the National Institutes of Health (NIH), in partnership with clinics and laboratories across the vision research community. The core mission of eyeGENE(R) is to facilitate research into the causes and mechanisms of rare inherited eye diseases and accelerate pathways to treatments. This study collects DNA samples from patients with inherited eye diseases to facilitate research to identify genetic factors responsible for these conditions. Nearly 500 genes that contribute to inherited eye diseases have been identified. As a result, gene-based therapies are being pursued to treat eye genetic diseases that were once considered untreatable. Physicians in collaborating institutions will recruit patients to participate in the study. Patients will provide a blood sample and undergo a standard eye examination. The blood sample and clinical information will then be sent to the NEI for testing, processing and storing in the biorepository. Patients are given the option to receive results back and/or to be re-contacted in the event of future clinical studies. Information supplied to the testing laboratories includes a unique identification number, the patient gender, and the patient date of birth. The stored samples are available to researchers along with information about the patient's disease, but without patient identifiers.
The purpose of this study is to make valganciclovir available, before it is approved for marketing, to HIV-infected patients who have cytomegalovirus (CMV) retinitis (eye infection) and cannot take drugs by injection. This study also will look at the safety of using valganciclovir as starting and/or ongoing therapy. CMV can cause serious AIDS-related infections in patients with HIV. Drugs that are effective against CMV eye infections can be given only by injection; this calls for a thin tube to be placed into a vein in the chest so that the patient is not put through getting too many needle sticks. An experimental drug, valganciclovir, is similar to 1 of these approved drugs, ganciclovir, but is more convenient and easier to use since it can be taken by mouth. Once in the body, valganciclovir changes to ganciclovir. Studies have shown that valganciclovir tablets can result in the same level of ganciclovir in the blood as ganciclovir injection.
Incomplete Closed Protocol
To evaluate the safety and efficacy of foscarnet induction treatment of cytomegalovirus (CMV) retinitis in AIDS patients who have previously suffered severe dose-limiting ganciclovir-related myelosuppression, who are ineligible for ganciclovir treatment due to myelosuppression or who have clearly failed to have a therapeutic response to ganciclovir therapy. To assess the duration of clinical response. To evaluate the effect on quantitative CMV cultures of blood and urine. To determine the effect on recovery of HIV p24 antigen capture direct from plasma.