Antiphospholipid antibody syndrome (APS) is an autoimmune disease characterized by the presence of antiphospholipid antibodies (APAs, including the anti-β2-glycoprotein I (β2-GPI) antibody, anticardiolipin antibody, and lupus anticoagulant) and vascular thrombosis or obstetrical complications [1]. Here, GPI is linked to autoimmune polyendocrinopathy.