Nobuyuki Asai

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OBJECTIVE Our study aimed to evaluate the longterm efficacy and safety of abatacept (ABA), and to explore factors that increase its longterm efficacy in patients with rheumatoid arthritis (RA) treated in routine clinical practice. METHODS There were 231 participants with RA treated with ABA who were prospectively registered in a Japanese multicenter(More)
Congenital myasthenic syndromes (CMS) are heterogeneous disorders in which the safety margin of neuromuscular transmission is compromised by one or more specific mechanisms. Using Sanger and exome sequencing in a CMS patient, we identified two heteroallelic mutations, p.Glu1233Lys and p.Arg1277His, in LRP4 coding for the postsynaptic low-density lipoprotein(More)
OBJECTIVES The inflammatory cytokine interleukin-6 (IL-6) directly stimulates C-reactive protein (CRP) expression. The present study aimed to examine how clinical treatment outcomes of rheumatoid arthritis (RA) with tocilizumab (TCZ), a humanised monoclonal anti-IL-6 receptor antibody, are related to CRP levels monitored for 52 weeks. METHODS One hundred(More)
OBJECTIVE To determine the effects of concomitant methotrexate (MTX) on the incidence of large joint replacement resulting from the progression of large joint destruction in patients with rheumatoid arthritis (RA) treated with tumor necrosis factor (TNF) inhibitors. METHODS A retrospective cohort study was performed using a multicenter registry. In total,(More)
OBJECTIVES Biologics have transformed the treatment of rheumatoid arthritis. Clinical remission is now the goal. We sought to verify whether the administration of tocilizumab-a biologic-can help to achieve current treatment goals. METHODS Using data from the Tsurumai Biologics Communication Registry for 122 patients treated with tocilizumab, we evaluated(More)
OBJECTIVE The purpose of this study was to identify the effects of concomitant use of MTX and baseline characteristics for remission in the treatment of RA with tocilizumab (TCZ) in daily clinical practice. METHODS A total of 240 RA patients who received TCZ were selected from the multicentre Tsurumai Biologics Communication Registry. Predictive baseline(More)
OBJECTIVES This retrospective observational study aimed to examine the efficacy of iguratimod with and without concomitant methotrexate (MTX) and to estimate the adequate observational period for predicting low disease activity (LDA) achievement at 24 weeks in patients with rheumatoid arthritis (RA). METHODS All patients treated with iguratimod were(More)
This study aimed to compare the long-term safety of biologics by initiation year of treatment in patients with rheumatoid arthritis (RA) in Japan. RA patients who started their first biologics including infliximab, etanercept, adalimumab, and tocilizumab between 2003 and 2008 were identified in the Tsurumai Biologics Communication Registry (TBCR),(More)
OBJECTIVE To determine the effects of concomitant methotrexate (MTX) on the incidence of total knee arthroplasty (TKA) resulting from the progression of joint destruction in patients with rheumatoid arthritis (RA) during longterm treatment with tumor necrosis factor (TNF) inhibitors. METHODS A total of 155 patients with RA (310 knee joints) received TNF(More)
OBJECTIVE Whether the Boolean-based American College of Rheumatology/European League Against Rheumatism (EULAR) criteria for rheumatoid arthritis (RA) including patient-reported outcome measures (PROMs) for remission are strict for use in daily clinical practice is controversial. This study aimed to clarify the differences in the remission status defined by(More)