HP and Thrombocytopenia: Thrombocytopenia and platelet transfusion were not associated with the duration of PMX-HP (Supplementary Table 4, https://links.lww.com/CCX/B554) but appeared related to the implementation of PMX-HP or CKRT (Supplementary Table 5, https://links.lww.com/CCX/B554), with CKRT likely being the primary contributor to thrombocytopenia (Supplementary Table 6, https://links.lww.com/CCX/B554).