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  • Title: Initial evaluation of subcutaneous daclizumab treatments for noninfectious uveitis: a multicenter noncomparative interventional case series.
    Author: Nussenblatt RB, Peterson JS, Foster CS, Rao NA, See RF, Letko E, Buggage RR.
    Journal: Ophthalmology; 2005 May; 112(5):764-70. PubMed ID: 15878055.
    Abstract:
    PURPOSE: To assess the feasibility of a study design that may determine whether subcutaneous administration of the interleukin-2 receptor antibody daclizumab can safely reduce the dependence on standard systemic corticosteroids or other immunosuppressive regimens in patients with sight-threatening, noninfectious intermediate uveitis, posterior uveitis, or panuveitis. DESIGN: Prospective, multicenter, nonrandomized, noncomparative, open-label interventional trial. PARTICIPANTS: Fifteen patients, 5 each at 3 clinical centers, with noninfectious intermediate, posterior, or panuveitis, who require a currently stable immunosuppression regimen of systemic corticosteroids and/or other systemic treatments to control noninfectious intraocular inflammation. METHODS: After enrollment and baseline ophthalmic evaluations, 2 induction treatments were given 2 weeks apart using subcutaneous (SC) daclizumab at 2 mg/kg. Subcutaneous daclizumab maintenance treatments were then continued every 2 weeks at 1 mg/kg for 6 months. The initial immunosuppression load was tapered over 8 to 12 weeks in a staggered fashion beginning with the first induction treatment. Safety evaluations were performed at each treatment visit, with a primary efficacy evaluation at 12 weeks and a repeat efficacy evaluation at 26 weeks. MAIN OUTCOME MEASURES: Best-corrected visual acuity (Early Treatment of Diabetic Retinopathy Study [ETDRS] method) with a concurrent taper of concomitant systemic immunosuppression medication load (tabulated by use of a weighted scoring system) was assessed; target for success was defined as a 50% or greater reduction in concomitant immunosuppression load by 12 weeks while maintaining visual acuity within 5 ETDRS letters of baseline. Ocular inflammation was assessed at each visit with standardized grading scales. RESULTS: Ten of 15 patients (67%) receiving SC daclizumab treatments every other week successfully achieved the primary efficacy end point of reducing their concomitant immunosuppression load by at least 50% while maintaining their baseline visual acuity at 12 and 26 weeks. Subcutaneous daclizumab injections were well tolerated with no serious adverse events observed during the 6 months of treatments, although 3 patients experienced possibly related, nonserious adverse events. CONCLUSIONS: Subcutaneous daclizumab induction treatments at 2 mg/kg followed by 1 mg/kg maintenance treatments every other week seems safe and, in most cases, may reduce the concomitant immunosuppressive load required to treat noninfectious uveitis for 12 to 26 weeks.
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