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  • Title: Impact of tocilizumab therapy on antibody response to influenza vaccine in patients with rheumatoid arthritis.
    Author: Mori S, Ueki Y, Hirakata N, Oribe M, Hidaka T, Oishi K.
    Journal: Ann Rheum Dis; 2012 Dec; 71(12):2006-10. PubMed ID: 22887851.
    Abstract:
    OBJECTIVES: We assessed the influence of tocilizumab (TCZ), a humanised monoclonal anti-interleukin-6 receptor antibody, on antibody response following influenza vaccination in patients with rheumatoid arthritis (RA). METHODS: A total of 194 RA patients received inactive trivalent influenza vaccination (A/H1N1, A/H3N2 and B/B1 strains). All patients were classified into the TCZ (n=62), TCZ+methotrexate (MTX) (n=49), MTX (n=65) and RA control (n=18) groups. Antibody titres were measured before and 4-6 weeks after vaccination using the haemagglutination inhibitory assay. RESULTS: For the A/H1N1 and A/H3N2 strains, the TCZ and TCZ+MTX groups achieved fold increases of 9.9-14.5, postvaccination seroprotection rates greater than 70% and seroresponse rates greater than 40%. For the B/B1 strain, seroresponse rates were approximately 30%, but fold increases and seroprotection rates were 5.0-5.4 and greater than 70%, respectively, in these treatment groups. MTX had a negative impact on vaccination efficacy, but adequate responses for protection were nevertheless demonstrated in the MTX group. Neither severe adverse effects nor RA flares were observed. CONCLUSIONS: TCZ does not hamper antibody response to influenza vaccine in RA patients. Influenza vaccination is considered effective in protecting RA patients receiving TCZ therapy with or without MTX.
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