title: Effects of clarithromycin in patients with active rheumatoid arthritis.
abstract: OBJECTIVE
  To evaluate the clinical efficacy, safety, and tolerability of clarithromycin in patients with rheumatoid arthritis.
  
  
  METHODS
  This was a 6-month, monocenter, randomized, double-blind, placebo-controlled study. A total of 81 patients with early rheumatoid arthritis were treated with either once-daily oral clarithromycin (500 mg) or daily oral placebo for 6 months.
  
  
  METHODS
  The primary efficacy variable was the percentage of patients who had a 20% improvement according to American College of Rheumatology (ACR) criteria (an ACR 20 response) at 6-months. Secondary outcome measures were 50% improvement and 70% improvement according to ACR criteria (an ACR 50 response and an ACR 70 response, respectively).
  
  
  RESULTS
  A significantly greater percentage of patients treated with 500 mg clarithromycin met the ACR 20 response at 6 months compared with patients who received placebo (59 vs. 33%; p < 0.001). Greater percentages of patients treated with 500 mg clarithromycin also achieved ACR 50 responses (34 vs. 10%; p < 0.001) and ACR 70 responses (20 vs. 3%; p = 0.003) compared with patients who received placebo, respectively. Clarithromycin was well tolerated. There were no dose-limiting toxic effects.
  
  
  CONCLUSIONS
  In patients with early active rheumatoid arthritis, treatment with clarithromycin significantly improved the signs and symptoms of rheumatoid arthritis. Clarithromycin has been shown to be effective against rheumatoid arthritis.
authors.affiliation: Division of Rheumatology, Nazilli State Hospital, Nazilli, Turkey. prevotella@mynet.com <prevotella@mynet.com>
authors.forename: Mesut
authors.initials: M
authors.lastname: Ogrendik
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000188:drug therapy*; D017291:Clarithromycin / Q000008:administration & dosage*; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004334:Drug Administration Schedule; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement / Q000187:drug effects; D016059:Range of Motion, Articular / Q000187:drug effects; D012016:Reference Values; D012307:Risk Factors; D012720:Severity of Illness Index; D016896:Treatment Outcome
chemical_list: D017291:Clarithromycin