FOXJ2 and autoimmune disease: The frequency of type B sequences was lower than that of type A sequences in the site selection experiments; however, type A and B sequences have comparable affinities for fork head homologous X (FHX) sites.[33] Previous studies have reported a positive association between FOXJ2 and the pathophysiology of cancers as well as autoimmune disorders.[34, 35, 36] In this study, we identified the upregulation of FOXJ2 in APS for the first time, demonstrating the important role of FOXJ2 in monocytes for regulating APS pathogenesis.