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Multicenter, Randomized Study Evaluating the Value of Antitubercular Treatment During Recurent Anterior Uveitis (URBA)

2019-10-11 10:03:42 | BioPortfolio

Summary

Uveitis accounts for 15% of the causes of legal blindness. The etiological diagnosis of uveitis is difficult because of the poor bacteriological performance of aqueous or vitreous fluid analysis. At the end of a medical and paramedical check-up, oriented by the typology of uveitis, a clinical situation is frequently encountered: idiopathic uveitis with a Quantiferon test (QFN) positive orienting to an old or recent contact with tuberculosis. Ocular tuberculosis is often characterized by a partial and transient response to corticosteroid therapy (local or general), due to predominant hypersensitivity phenomena and low inoculum. Therefore, antitubercular treatment is recommended for idiopathic posterior uveitis with positive QFN. This treatment of 6-9 months has shown, in combination with systemic corticosteroids, its effectiveness on ocular inflammation and significant decrease in recurrence frequency.

For previous uveitis with QFN positive, there is no study or recommendation in the low endemic countries on the indication of anti-tuberculosis drugs and practices are variable.

Tuberculous anterior uveitis is distinguished by high rate of relapses and chronic uveitis upon discontinuation of topic corticosteroid therapy that exposes to broad posterior synechiae leading to an ocular functional impairment. Optimizing the management of recurrent anterior uveitis is therefore crucial.

The aim of this prospective, randomized, controlled, open, two parallel arm trial is to compared antitubercular treatment "add-on "of local corticosteroid therapy to Local Corticosteroid Therapy Only in patients with recurrent or chronic anterior uveitis.

Primary outcome is the treatment succes defined as uveitis recovery at 3 months and the absence of recurrence at 18 months of follow-up.

Study Design

Conditions

Uveitis, Anterior

Intervention

Antitubercular treatment (RIFATER ©), Ethambutol, RIFINAH ©

Status

Not yet recruiting

Source

Assistance Publique - Hôpitaux de Paris

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-10-11T10:03:42-0400

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Medical and Biotech [MESH] Definitions

Human histocompatibility (HLA) surface antigen encoded by the B locus on chromosome 6. It is strongly associated with acute anterior uveitis (UVEITIS, ANTERIOR); ANKYLOSING SPONDYLITIS; and REACTIVE ARTHRITIS.

An antitubercular agent that inhibits the transfer of mycolic acids into the cell wall of the tubercle bacillus. It may also inhibit the synthesis of spermidine in mycobacteria. The action is usually bactericidal, and the drug can penetrate human cell membranes to exert its lethal effect. (From Smith and Reynard, Textbook of Pharmacology, 1992, p863)

Inflammation of the anterior uvea comprising the iris, angle structures, and the ciliary body. Manifestations of this disorder include ciliary injection, exudation into the anterior chamber, iris changes, and adhesions between the iris and lens (posterior synechiae). Intraocular pressure may be increased or reduced.

Inflammation of the choroid as well as the retina and vitreous body. Some form of visual disturbance is usually present. The most important characteristics of posterior uveitis are vitreous opacities, choroiditis, and chorioretinitis.

A second-line antitubercular agent that inhibits mycolic acid synthesis. It also may be used for treatment of leprosy. (From Smith and Reynard, Textbook of Pharmacology, 1992, p868)

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