title: Safety and effectiveness of interferon alpha-2a in treatment of patients with Behçet's uveitis refractory to conventional treatments.
abstract: OBJECTIVE
  To evaluate the intermediate-term safety and effectiveness of interferon alpha-2a (IFNalpha2a) in patients with Behçet's uveitis (BU) refractory to corticosteroids and immunosuppressive agents.
  
  
  METHODS
  Open, nonrandomized, uncontrolled, interventional, prospective study.
  
  
  METHODS
  Fifty-three patients (106 eyes) with active, vision-threatening BU who failed to respond to conventional treatments.
  
  
  METHODS
  In 53 patients, acute inflammation was suppressed with effective prednisolone dosage (1-2 mg/kg/day, tapered to 10 mg within 4-6 weeks). The patients were treated with IFNalpha2a 4.5 million international units (MIU) 3 times per week for the first 3 months followed by IFNalpha2a 3 MIU 3 times per week for the next 3 months. Observation or other treatment methods were performed according to the decision tree developed for this study.
  
  
  METHODS
  Remission and complete response (primary outcome measures), frequency of uveitis attacks, visual acuity (VA), and adverse effects (secondary outcome measures).
  
  
  RESULTS
  During 2 years of follow-up (median 65 months, range 12-130 months), compliance with the therapy was excellent. At the end of 1-year follow-up, treatment response was obtained in 45 of 53 patients (84.9%). The mean attack rate of 3.6+/-1.1 per year (range, 2-8) decreased to 0.56+/-0.75 (range, 0-4) per year (P=0.001). Visual acuity improved (> or = 0.2 logarithm of the minimum angle of resolution units from initial VA) in 30 eyes (28.3%) and worsened in 12 eyes (11.3%). Five patients (9.4%) did not respond to the initial treatment, and 3 patients (5.6%) developed severe adverse effects, including psoriasis, epileptic seizure, and extreme tiredness. Fifteen patients (28.3%) were off treatment for all the medications and disease free for 28+/-13.1 months (range, 12-50 months).
  
  
  CONCLUSIONS
  These results suggest that IFNalpha2a may be a valuable treatment option in BU that is refractory to corticosteroids and conventional immunosuppressive agents. The possible role of IFNalpha2a as a first-line agent in BU should be validated in randomized controlled clinical trials against newly described biologic agents.
  
  
  BACKGROUND
  The author(s) have no proprietary or commercial interest in any materials discussed in this article.
authors.affiliation: Gülhane Military Medical Faculty, Department of Ophthalmology, Etlik, Ankara, Turkey. gsobaci@hotmail.com
authors.forename: Güngör
authors.initials: G
authors.lastname: Sobaci
authors.forename: Uzeyir
authors.initials: U
authors.lastname: Erdem
authors.forename: A Hakan
authors.initials: AH
authors.lastname: Durukan
authors.forename: Cüneyt
authors.initials: C
authors.lastname: Erdurman
authors.forename: Atilla
authors.initials: A
authors.lastname: Bayer
authors.forename: Serkan
authors.initials: S
authors.lastname: Köksal
authors.forename: Suat
authors.initials: S
authors.lastname: Karagul
authors.forename: M Zeki
authors.initials: MZ
authors.lastname: Bayraktar
mesh_terms: D000328:Adult; D001379:Azathioprine / Q000627:therapeutic use; D001528:Behcet Syndrome / Q000188:drug therapy* / Q000503:physiopathology; D005260:Female; D005451:Fluorescein Angiography; D005938:Glucocorticoids / Q000627:therapeutic use; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D011239:Prednisolone / Q000627:therapeutic use; D011446:Prospective Studies; D011994:Recombinant Proteins; D016896:Treatment Outcome; D014792:Visual Acuity / Q000502:physiology; D055815:Young Adult
chemical_list: D005938:Glucocorticoids; D007166:Immunosuppressive Agents; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D011239:Prednisolone; D001379:Azathioprine