View clinical trials related to Neovascularization, Pathologic.
Filter by:Angioid streaks are rare lesions associated to retinal pigment epithelium degenerations. They can be caused by general diseases as pseudoxanthoma elasticum, Paget's disease or drepanocytosis. Choroidal neovascularization (CNV) represents the most frequent complication for those patients. It leads to a rapid and important loss of visual acuity. CNV in angioid streaks represent the fourth leading cause of CNV in young patients. CNV in angioid streaks is treated at the moment with off-label anti-VEGF (Vascular Endothelial Growth Factor) therapy and could also benefit from aflibercept (EYLEA), a new anti-VEGF currently indicated in AMD. Case reports suggest that such patients would not need as many injections as in AMD. ASTRID is an open-label, single arm, prospective, multicenter, phase II study. The main objective is to demonstrate the effectiveness in clinical terms after 52 weeks of treatment with aflibercept on the visual acuity of patients affected by CNV in angioid streaks. A specific dosage regimen is designed to achieve maximum efficiency. The patients are followed on a monthly basis until 52 weeks. Six injections are mandatory, the other ones are injected only in case of active CNV.
The purpose of the study is to test the investigational drug Gamunex-C on the growth of blood vessels over the cornea. This study is being conducted by Dr. Balamurali Ambati at the Moran Eye Center at the University of Utah. The cornea is the clear outer front part of the eye. In corneal neovascularization, blood vessels grow over the cornea. Corneal neovascularization and ocular anterior segment inflammations are sight-threatening conditions. Lipid deposition and edema with subsequent scar formation can compromise corneal clarity irreversibly. Corneal neovascularization is also a well recognized risk factor for corneal graft failure. In its natural state, the cornea is a site of immune privilege well suited to tissue transplantation. Once vascularized, there is direct exposure of corneal antigens to circulating host immune mechanisms greatly increasing the chance of rejection [Collaborative Corneal Transplantation Study]. Melting or inflammation in the anterior chamber, cornea, or ocular surface can cause irreversible scarring or destruction of the optical elements of the eye, which can compromise vision. Current standard of care for such conditions includes use of topical steroids and sometimes immunosuppressants (e.g., cyclosporine). These do not address a common underlying corneal neovascularization or melting. This is a Phase 1 clinical trial of subconjunctival IVIg (Gamunex-C) injection for treatment of corneal neovascularization in the setting of corneal transplantation with neovascularization. Candidates for corneal transplantation with corneal neovascularization in one or more quadrants crossing more than 0.5mm over the limbus will be identified for inclusion in our study.
Study the effectiveness of the treatment detachment of retinal pigment epithelium secondary to polypoidal choroidal vasculopathy. Efficacy will be assessed by regression of polyp area after twelve months, compared to baseline. Treatment under study is a triple therapy with: 1) reduced-fluence photodynamic therapy (PDT), 2) intravitreal (IVT) triamcinolone and, 3) IVT ranibizumab, for the treatment of detachment of the retinal pigment epithelium (PED) secondary to Polypoidal Choroidal Vasculopathy (PCV).
The FORESEE HOME is intended for the early detection of central and paracentral irregularities (abnormalities) in the visual field, most commonly associated with Age Related Macular Degeneration (AMD). However, the device has the ability to detect the development of the lesion post treatment and therefore to assess in determination of the next treatment. The Optical Coherence Tomography (OCT) may be used as well to identify choroidal neovascularization (CNV). Comparison between the two methods will allow better understanding of both devices. The FORESEE HOME can be used as an assessment tool for the progression and success of the treatment given to AMD lesions. Therefore, evaluating the size and the location of the treated lesions may serve as an additional tool.
Anti-VEGF therapy has been proven efficacious for the wet (neovascular) form of macular degeneration and may be beneficial for the treatment of choroidal neovascularization (CNV) due to other causes. The limitation of this type of treatment is the necessity for frequent intraocular injections. The purpose of this study is to determine if using anti-VEGF therapy in combination with photodynamic therapy can reduce the number of treatments needed with monotherapy while achieving similar visual results. There are ongoing multicenter trials evaluating combination therapy in patients with wet AMD but no similar trial for patients with CNV due to non-AMD causes. Therefore, in this study the investigators will focus on patients with CNV not due to AMD.
Intravitreal pegaptanib for treatment of choroidal neovascularisation secondary to pathologic myopia
Cystic Fibrosis (CF), the most common inherited disease in Caucasians, is characterized by chronic pulmonary inflammation and progressive loss of gas exchange units that eventually results in respiratory failure. There is strong evidence that, in CF, abnormally low perfusion carries a high risk of death independent from the presence of pulmonary hypertension. However, the evolution of pulmonary vascular disease in CF and how it might contribute to the rate of decline in lung function is not known. Our knowledge remains limited to the results of old observational studies which concluded that the major causes of pulmonary vascular remodeling and hypertension in CF are hypoxic respiratory failure and destruction of lung tissue. Our recent data obtained by state-of-the-art Magnetic Resonance Imaging (MRI) of the pulmonary circulation, challenges the existing paradigm. We demonstrate that in the absence of hypoxia, significant changes in pulmonary perfusion and in surrogate measures of vascular resistance as well as in collateral blood flow begin early in the course of CF. Newly developed therapeutics have altered dramatically the course of patients suffering from pulmonary vascular disease. Through this 8 week trial, we will examine by Magnetic Resonance Imaging the effect of Sildenafil on pulmonary perfusion and systemic vascularization of the lungs in subjects with mild to moderate disease.
The purpose of this study is to determine whether injections of ranibizumab into the eye are safe and well tolerated when given to subjects in multiple doses.
SDF-1, an important cytokine for neovascularisation is cleaved by (dipeptidyl peptidase IV) DPPIV. The aim of this study is to assess the effect of the dipeptidyl peptidase IV inhibitor vildagliptin (Galvus®) on endothelial function as well as number and functional activity of progenitor cells in patients with documented diabetes mellitus.
Age related macular degeneration (AMD) is a multifactorial disease with a strong genetic component. Most importantly a genetic polymorphism in the gene encoding for the complement factor H (CFH) has been recently identified which is highly associated with an increased risk of developing AMD. This Tyr402His polymorphism located on chromosome 1q31 has been implicated to play a role in the development of the disease. For this purpose a total of 200 patients with wet AMD will be included in the study. As described in detail below, the current study aims to identify potentially non-responders to anti-VEGF therapy based on genetic analysis of VEGF polymorphism and complement factor H polymorphism.