In a previous report, up to one third of seronegative APS patients were positive to at least one non-criteria aPL, including anti-PS/PT, anti-cardiolipin/vimentin antibodies (aCL/Vim), antiphosphatidylethanolamine antibodies (aPE), and antiphosphatidylserine (aPS) [21]. Here, FASLG is linked to autoimmune polyendocrinopathy.