Postmarketing surveillance of tocilizumab for rheumatoid arthritis in Japan: Interim analysis of 3881 patients

Takao Koike, Masayoshi Harigai, Shigeko Inokuma, Naoki Ishiguro, Junnosuke Ryu, Tsutomu Takeuchi, Syuji Takei, Yoshiya Tanaka, Kyoko Ito, Hisashi Yamanaka

研究成果: Article査読

135 被引用数 (Scopus)


Objective: An interim analysis of an all-patient postmarketing surveillance programme in Japan to investigate the safety of tocilizumab for the treatment of rheumatoid arthritis (RA) in the real world. Methods: This analysis included 3881 patients. Patients received 8 mg/kg of tocilizumab every 4 weeks, and were observed for 28 weeks. Data on baseline characteristics and adverse events (AE) were collected. Results: Total and serious AE were reported as 167 and 27 events/100 patient-years, respectively. The most frequent AE and serious AE were infections. Logistic regression analysis identified the following risk factors for the development of serious infection: concurrent or medical history of respiratory disorders; prednisolone dose at baseline ≥5 mg/day; and age ≥65 years. Twenty-five patients died, and the standardised mortality ratio, with the Japanese general population in 2008 as reference, was 1.66, similar to the results from the Japanese cohort study for RA patients. Conclusions: Tocilizumab is acceptably safe in the real clinical setting. Tocilizumab needs to be used with consideration of the benefit-risk balance to avoid serious infections in elderly patients and those on high doses of corticosteroids or with a concurrent or medical history of respiratory disorders.

ジャーナルAnnals of the rheumatic diseases
出版ステータスPublished - 2011 12月

ASJC Scopus subject areas

  • 免疫アレルギー学
  • リウマチ学
  • 免疫学
  • 生化学、遺伝学、分子生物学(全般)


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