Simplified Disease Activity Index remission at month 6 is an independent predictor of functional and structural remissions at month 12 during abatacept treatment in patients with rheumatoid arthritis: A multi-center, prospective cohort study in Japan

Hayato Yamazaki, Fumio Hirano, Tsutomu Takeuchi, Koichi Amano, Jun Kikuchi, Mari Kihara, Waka Yokoyama, Takahiko Sugihara, Kenji Nagasaka, Hiroyuki Hagiyama, Yoshinori Nonomura, Ryoko Sakai, Michi Tanaka, Ryuji Koike, Toshihiro Nanki, Hitoshi Kohsaka, Nobuyuki Miyasaka, Masayoshi Harigai

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3 Citations (Scopus)

Abstract

Objective: To evaluate association of clinical remission at month 6 with functional and structural remissions at month 12 during abatacept treatment in patients with rheumatoid arthritis (RA). Methods: This 12-month prospective, multicenter cohort study enrolled 168 patients with RA who started abatacept. Outcomes were assessed using composite measures, quality of life indices, and the van der Heijde-modified total Sharp score (mTSS). The logistic regression analysis was applied to identify factors associated with outcomes and their odds ratios (OR) with 95% confidence interval (95% CI). Results: At month 6 and 12, 21.4% and 26.2% of the patients achieved Simplified Disease Activity Index (SDAI) remission (SDAI <3.3), and 40.6% and 41.7% achieved Health Assessment Questionnaire-Disability Index (HAQ-DI <0.5) remission. Among 129 patients whose mTSS progression was evaluated at month 12, 83 (64.3%) achieved structural remission (ΔmTSS ≤0.5 for 12 months). SDAI remission at month 6 was identified as a significant predictor of both functional (OR, 3.732; 95% CI, 1.328–10.489) and structural remissions (OR, 4.301; 95% CI, 1.298–14.243) at month 12 after adjusting for covariates. Conclusions: Aiming for SDAI remission at month 6 is an appropriate strategy to obtain good functional and structural outcomes at month 12.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalModern Rheumatology
DOIs
Publication statusAccepted/In press - 2016 Dec 9

Keywords

  • Abatacept
  • Outcome assessment
  • Remission
  • Rheumatoid arthritis

ASJC Scopus subject areas

  • Rheumatology

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    Yamazaki, H., Hirano, F., Takeuchi, T., Amano, K., Kikuchi, J., Kihara, M., Yokoyama, W., Sugihara, T., Nagasaka, K., Hagiyama, H., Nonomura, Y., Sakai, R., Tanaka, M., Koike, R., Nanki, T., Kohsaka, H., Miyasaka, N., & Harigai, M. (Accepted/In press). Simplified Disease Activity Index remission at month 6 is an independent predictor of functional and structural remissions at month 12 during abatacept treatment in patients with rheumatoid arthritis: A multi-center, prospective cohort study in Japan. Modern Rheumatology, 1-8. https://doi.org/10.1080/14397595.2016.1259715