The effect of body mass index on clinical response to abatacept as a first-line biologic for rheumatoid arthritis: 6-month results from the 2-year, observational, prospective ACTION study

Objective:To assess the impact of baseline body mass index (BMI) on the efficacy and retention of intravenous abatacept at 6 months in biologic-naïve patients with rheumatoid arthritis (RA). Methods: This was a 6-month analysis of a 2-year, non-interventional, international, prospective study. Base...

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Hauptverfasser: Mariette, Xavier (VerfasserIn) , Lorenz, Hanns-Martin (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2017
In: Joint bone spine
Year: 2016, Jahrgang: 84, Heft: 5, Pages: 571-576
ISSN:1778-7254
DOI:10.1016/j.jbspin.2016.10.011
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1016/j.jbspin.2016.10.011
Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S1297319X1630210X
Volltext
Verfasserangaben:Xavier Mariette, Rieke Alten, Hubert G. Nüßlein, Mauro Galeazzi, Hanns-Martin Lorenz, Alain Cantagrel, Melanie Chartier, Coralie Poncet, Christiane Rauch, Manuela Le Bars

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520 |a Objective:To assess the impact of baseline body mass index (BMI) on the efficacy and retention of intravenous abatacept at 6 months in biologic-naïve patients with rheumatoid arthritis (RA). Methods: This was a 6-month analysis of a 2-year, non-interventional, international, prospective study. Baseline characteristics, clinical response and retention rates were compared by BMI subgroup: underweight/normal, overweight and obese (<25, 25 to <30 and ≥30kg/m2, respectively). Results: BMI was reported in 643/672 (96%) patients: 264 (41%) were underweight/normal, 224 (35%) overweight and 155 (24%) obese. At baseline, the obese group had more active disease (mean [95% confidence intervals] 28-joint Disease Activity Score [C-reactive protein; derived] 4.6 [4.5, 4.7], 4.8 [4.7, 5.0] and 5.1 [4.9, 5.2] for underweight/normal, overweight and obese groups, respectively), a higher prevalence of metabolic disorders, a greater proportion of women and a lower proportion of patients with rheumatoid factor positivity. There were no significant differences in the percentages of patients achieving a good/moderate European League Against Rheumatism response by BMI group (80.7, 86.1 and 77.0% for underweight/normal, overweight and obese groups, respectively; P=0.178). Overall retention rates at 6 months did not differ across groups (89, 92 and 89% for underweight/normal, overweight and obese groups, respectively; log-rank P=0.382). After adjustment for baseline characteristics, BMI was not significantly associated with risk of discontinuation (reference BMI<25kg/m2; hazard ratio [95% confidence intervals] 0.46 [0.22, 0.99] and 0.69 [0.34, 1.41] for overweight and obese patients, respectively). Conclusion: BMI does not impact abatacept clinical response or retention in biologic-naïve patients with RA. 
534 |c 2016 
650 4 |a Abatacept 
650 4 |a Body mass index 
650 4 |a EULAR response 
650 4 |a Real-world study 
650 4 |a Retention rate 
650 4 |a Rheumatoid arthritis 
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