Is IL-6 an appropriate target to treat spondyloarthritis patients refractory to anti-TNF therapy? a multicentre retrospective observational study
Fernando K Lekpa, Cécile Poulain, Daniel Wendling, Martin Soubrier, Michel De Bandt, Jean M Berthelot, Philippe Gaudin, Eric Toussirot, Philippe Goupille, Thao Pham, Jérémie Sellam, Rémy Bruckert, Muriel Paul, Valérie Farrenq, Pascal Claudepierre* and the Club Rhumatismes et Inflammation