I cannot create a summary of this article because the search results provided do not include the content of the article "Blinatumomab in Combined Immune Thrombocytopenia and Antiphospholipid Syndrome" from the March 2026 New England Journal of Medicine. The available results include information about blinatumomab (Blincyto) as a treatment for acute lymphoblastic leukemia and separate information about immune thrombocytopenia and antiphospholipid syndrome, but not about their combination in the context of treatment with blinatumomab. Without access to the full text of the article, I cannot provide an accurate and verified summary of its content as you requested.