Active clinical trials for "Telangiectasis"

Idiopathic Parafoveal Telangiectasia (IPT) [also known as Idiopathic Perifoveal Telangiectasia, Idiopathic Juxtafoveal Telangiectasia (IJT, JFT) and Macular Telangiectasia (MacTel)] is a disorder of unknown etiology. IPT is classified as Group 2A in the Gass classification of macular telangiectasias (Reference 1,5) - a bilateral, but not always symmetric disorder. It is characterized in its early stages by dilation and loss of parafoveal capillaries accompanied by angiographic leakage, "right angle" venules, central and parafoveal intraretinal cysts.

Antiangiogenic drugs, such as bevacizumab, are a new treatment strategy in Hereditary Hemorrhagic Telangiectasia (HHT). Its systemic administration in patients with HHT improves liver damage-related symptoms and epistaxis (cases reported and on-going study-ClinicalTrials.gov Identifier #NCT00843440-). To limit the systemic adverse effects of bevacizumab and to ease administration, a local administration seems suitable. A clinical case recently showed the benefits of bevacizumab nasal spray in these patients. Its results were confirmed in a characterization study on bevacizumab transport through porcine nasal mucosa (in press). It seems necessary to assess the tolerance and efficacy of bevacizumab nasal spray in humans for the treatment of epistaxis in HHT with a prospective phase 1 study. The primary objective of the study is to evaluate the tolerance of increasing doses of bevacizumab administered as a nasal spray in patients with HHT-related epistaxis. This phase-1, randomized, double-blind, placebo-controlled, monocentric study is to be carried out sequentially (dose escalation) on 5 groups of 8 patients. Each group is made up of 6 verum and 2 placebos.

The purpose of this study is to test a novel and tolerable office-based treatment method, sclerotherapy with sodium tetradecyl sulfate, for recurrent epistaxis (nosebleeds) related to Hereditary Hemorrhagic Telangiectasia (HHT) disease.

This study will examine whether the drug ranibizumab (Lucentis) can help prevent vision loss in people with macular telangiectasia, a condition in which new blood vessels grow in the retina at the back of the eye and can leak. Such changes in blood vessels are seen in other diseases associated with changes in a body chemical called vascular endothelial growth factor (VEGF). Ranibizumab is an anti-VEGF drug that is effective in treating another eye disease, age-related macular degeneration, with similar changes in eye blood vessels. People 18 years of age and older with macular telangiectasia in both eyes and new blood vessel growth in at least one eye may be eligible for this study. They must have vision better than 20/400 in the study eye. Participants undergo the following procedures: Ranibizumab injections in the study eye at least four times over 12 weeks. Depending on the response to treatment and the side effects, additional injections may be given every 4 weeks for up to 1 year. The eye is numbed before the injection and the eye area is cleaned with an antiseptic. Antibiotic drops are used for 3 days following the injection to prevent infection. Evaluations before starting treatment, at the time of each injection, and 8 weeks after the last treatment: History and physical examination. Eye examination with dilation, microperimetry and photography: The eye examination measures visual acuity, eye pressure and eye movements. For the microperimetry test, subjects sit in front of a computer screen and press a button when they see a light on the screen. Measurements and photographs of the retina are also taken. Fluorescein and indocyanine green angiography to examine the blood vessels in the eye: A dye called fluorescein or indocyanine green is injected into a vein in the arm. The dye travels through the veins to the blood vessels in the eyes. A camera takes pictures of the dye as it flows through the blood vessels. Pregnancy test: Women who are able to become pregnant have a urine pregnancy test before each ranibizumab injection.

This study will examine whether the drug ranibizumab (Lucentis) can help prevent vision loss in people with macular telangiectasia, a condition in which new blood vessels grow in the retina at the back of the eye and can leak. Such changes in blood vessels are seen in other diseases associated with changes in a body chemical called vascular endothelial growth factor (VEGF). Ranibizumab is an anti-VEGF drug that is effective in treating another eye disease, age-related macular degeneration, with similar changes in eye blood vessels. People 18 years of age and older with macular telangiectasia in both eyes with no new blood vessel growth in either eye may be eligible for this study. They must have vision better than 20/400 in the study eye. Participants undergo the following procedures: Ranibizumab injections in the study eye at least four times over 12 weeks. Depending on the response to treatment and the side effects, additional injections may be given every 4 weeks for up to 1 year. The eye is numbed before the injection and the eye area is cleaned with an antiseptic. Antibiotic drops are used for 3 days following the injection to prevent infection. Evaluations before starting treatment, at the time of each injection, and 8 weeks after the last treatment: History and physical examination. Eye examination with dilation, microperimetry and photography: The eye examination measures visual acuity, eye pressure and eye movements. For the microperimetry test, subjects sit in front of a computer screen and press a button when they see a light on the screen. Measurements and photographs of the retina are also taken. Fluorescein and indocyanine green angiography to examine the blood vessels in the eye: A dye called fluorescein or indocyanine green is injected into a vein in the arm. The dye travels through the veins to the blood vessels in the eyes. A camera takes pictures of the dye as it flows through the blood vessels. Pregnancy test: Women who are able to become pregnant have a urine pregnancy test before each ranibizumab injection.

Idiopathic Perifoveal telangiectasia is a poorly understood disorder that involves the growth of blood vessels around the center of the macula(perifoveal region). These blood vessels may extrend beneath the retina to produce an area of sub-retinal neosvascularization(growth of abnormal blood vessels under the retina which "leak" fluid, causing reduction in vision. Limited forms of treatment are available in managing the neovascularization and its consequences. Anecortave Acetate injection is considered as an attempt to control the growth of the abnormal blood vessels.

This study will examine whether the drug ranibizumab is an effective treatment for macular telangiectasia, a condition in which existing blood vessels near the macula (the back part of the eye responsible for sharp central vision) become dilated and twisted, and new abnormal blood vessels may form under the retina. Both the existing dilated vessels, as well the new subretinal vessels can leak fluid and blood, distort the retina, and affect vision. This study will see if ranibizumab can slow or stop the leakage and growth of existing, dilated, macular vessels in cases where new vessel formation under the retina is absent. Patients 18 years of age and older who have macular telangiectasia without new blood vessel formation may be eligible for this study. Visual acuity must be 20/40 or worse. Participants receive at least four injections of ranibizumab into the eye over a 12-week period. After the fourth injection, additional injections may be given every 4 weeks for up to 1 year if the doctor determines that they may be of benefit. In addition to ranibizumab treatment, patients undergo the following procedures: Medical history and physical examination. Eye examination, including dilation of the pupils and measurement of the fluid pressure in the eye. Fluorescein angiogram: A yellow dye is injected into an arm vein and travels to the blood vessels in the eyes. Photographs of the retina are taken with a special camera that flashes a blue light into the eye. The photos show whether any dye has leaked from the vessels into the retina. Indocyanine green angiography: This procedure identifies feeder vessels that may be supplying the abnormal blood vessels. The test is similar to fluorescein angiography, but uses a green dye and flashes an invisible light. Autofluorescence imaging: This test examines how well the retina functions. The back of the eye is photographed with a bright light. Optical coherence tomography: This test measures retinal thickness. A light shined into the eye produces cross-sectional pictures of the retina. The measurements are repeated during the study to determine if retinal thickening is getting better or worse, or staying the same. Stereoscopic color fundus photography: The pupils are dilated and special photographs of the inside of the eye are taken to evaluate the retina and measure changes that occur over time. The camera flashes a bright light into the eye for each picture. Follow-up visits: The doctor evaluates the effects of the study treatment before and after each injection. Patients are contacted by phone 3 days after each injection to check on any treatment side effects. A final follow-up visit is scheduled 8 weeks after the last treatment.

Hereditary Hemorrhagic Telangiectasia (HHT) is a genetic disorder of angiogenesis associated with disabling epistaxis. Management of these nose bleedings requires more effective treatment. Propranolol, a beta-blocker, is a potentially useful therapeutic considering its anti-angiogenic properties. Our objective is to explore the efficacy of propranolol, three months after its introduction, on the cumulative duration of epistaxis in HHT patients.

This study is a double-blinded, randomized controlled trial to evaluate the efficacy of an intranasal topical timolol gel in the care for epistaxis in adults with hereditary hemorrhagic telangiectasia.

This is a multi-center, open-label, 6-month study to evaluate the safety of bilateral CNTF implants in participants with Macular Telangiectasia Type 2.