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  • Title: [Rheumatoid factor positivity rather than anti-CCP positivity, a lower disability and a lower number of anti-TNFalpha agents failed are associated with response to rituximab in rheumatoid arthritis].
    Author: Quartuccio L, Salvin S, Saracco M, Lombardi S, Fabris M, Mansutti E, Maset M, Pellerito S, De Vita S.
    Journal: Reumatismo; 2009; 61(3):182-6. PubMed ID: 19888503.
    Abstract:
    OBJECTIVE: Predictors of response to biologics in rheumatoid arthritis (RA) is an important issue in the current era. Rituximab (RTX) has been demonstrated effective and safe in active RA, resistant to traditional or biologic DMARDs. METHODS: Fifty-seven patients with active longstanding RA were treated with RTX after traditional DMARD or anti-TNF alpha therapy failure. RESULTS: Number of anti-TNF treatment previously failed (p=0.005), HAQ (p=0.013), rheumatoid factor (RF) (p=0.0002) and anti-CCP (p=0.006) were associated with an ACR response > or =50 at the end of 6th month by univariate analysis. Multivariate analysis confirmed that the number of anti-TNF previously failed, baseline HAQ and RF, but not anti-CCP were associated with an ACR response > or =50. EULAR moderate/good response was associated with ESR value (p=0.036), HAQ (p=0.032), and RF (p=0.01) by univariate analysis, while only RF positivity was associated with EULAR moderate/good response by multivariate analysis. CONCLUSIONS: RF positivity rather than anti-CCP positivity is a predictor of response to RTX, suggesting that RF-positive patients with low disability may obtain a clinical response when treated to RTX after the first anti-TNF agent failure or after traditional DMARD therapies. Larger studies are required to confirm these results.
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