The Catastrophic Antiphospholipid Syndrome Market Size is Anticipated to Exceed USD 12.09 Billion by 2033, Growing at a CAGR of 10.66% from 2023 to 2033. Antiphospholipid syndrome (APS) is defined as the presence of consistently high antiphospholipid antibodies in conjunction with a variety of clinical characteristics including thromboses and pregnancy-related illness.