Abstract: This clinical case series describes our experience with the use of Janus kinase 1/2 inhibitor baricitinib in two patients suffering from refractory adult-onset Still's disease (AOSD) as well as in one case suffering from AOSD-like autoinflammatory disease in the context of myelodysplastic syndrome. All patients suffered from disease nonresponsive to conventional Disease-modifying antirheumatic drugs (DMARDs) as well as biological therapies including interleukin (IL)-1 and IL-6 blockade, relying instead on high daily doses of prednisolone. We also report the first case of Pneumocystis jirovecii infection following baricitinib use.Keywords: adult onset Still's disease -- drug therapy, ankylosing spondylitis, arthritis, antirheumatic agents, undifferentiated systemic autoinflammatory disease, disease-modifying antirheumatic drugsPublished in DiRROS: 08.04.2021; Views: 1582; Downloads: 964 Full text (321,22 KB)This document has many files! More...