Contribution of abnormal BMI to adverse health-related quality of life outcomes after a 52-week long therapy in patients with SLE.

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To investigate whether abnormal BMI is associated with adverse health-related quality of life (HRQoL) outcome, including severe fatigue, after 52 weeks of standard therapy (ST) plus belimumab or placebo in patients with SLE.We analysed data from the BLISS-52 (NCT00424476) and BLISS-76 (NCT00410384) trials (N = 1684). Adverse HRQoL was defined as SF-36 scores ≤ the 5th percentile in age- and sex-matched US population-based subjects, and FACIT-F scores <30. We compared BMI groups using the Pearson's χ2 test, and assessed independence with multivariable logistic regression analysis.Overweight (BMI ≥25 kg/m2) and obese (BMI ≥30 kg/m2) patients showed increased likelihood to exhibit adverse SF-36 physical component summary (OR: 1.8; 95% CI: 1.4-2.3; p< 0.001 and OR: 2.4; 95% CI: 1.8-3.2; p< 0.001, respectively) and FACIT-F (OR: 1.3; 95% CI: 1.1-1.6; p= 0.010 and OR: 1.5; 95% CI: 1.2-2.0; p= 0.002, respectively) scores at week 52. Underweight was associated with adverse SF-36 mental component summary scores, also after adjustment for sex, ancestry, age, disease duration, disease activity, organ damage and prednisone dose during the study period (OR: 2.1; 95% CI: 1.2-3.6; p= 0.007). Addition of belimumab to ST independently protected against adverse SF-36 general health (OR: 0.8; 95% CI: 0.6-1.0; p= 0.025) and FACIT-F 


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