Clinical and quality of life improvements with golimumab or infliximab in a real-life ankylosing spondylitis population: the QUO-VADIS study

• Published in: Clinical and experimental rheumatology 2019-03, Vol.37 (2), p.199-207
• Main Authors: Van den Bosch, Filip, Flipo, Rene-Marc, Braun, Jürgen, Vastesaeger, Nathan, Kachroo, Sumesh, Govoni, Marinella
• Format: Article
• Language: English
• ISSN: 0392-856X

The QUO VADIS study evaluated disease activity and health-related quality-of-life (HRQoL) in ankylosing spondylitis (AS) patients treated with golimumab (GLM) or infliximab (IFX, originator) during routine clinical care. This prospective observational study followed biologics-naïve AS patients newly treated with GLM or IFX for 6 months. Disease activity (BASDAI, BASFI, ASAS, and ASDAS) and HRQoL improvement (≥5 points of SF-36 Physical Component Summary [PCS] score; PCS response) were measured. A Classification and Regression Trees (CART) analysis evaluated association of baseline parameters with PCS response at 6 months. 963 patients (mean age 43 years, 61% male, 64% HLA-B27 positive) received ≥1 dose of medication (78% GLM; 22% IFX). Disease activity was reduced; mean (SD) changes from baseline at month 6 of -2.7 (BASDAI) and -2.1 (BASFI) and 40% and 35% achievement of BASDAI50 and ASAS40 response, respectively, were observed. PCS response was achieved at month 6 in 52% of patients. Using CART analysis, baseline parameters (cut-off values) associated with HRQoL improvement were ASDAS (≥3.48), C-reactive protein (≥8.55 mg/L), age (≤35.5 years), and BASFI (≥1.15). This algorithm correctly identified 57.5% (sensitivity) of PCS responders (≥5 points) and 61.0% (specificity) of PCS non-responders (