PDCD1 and axial length measurement: Cardiotoxicity during the treatment of AL patients has been extensively reported (27), including radiotherapy (28, 29), conventional chemotherapies (e.g., anthracyclines, antimetabolites, and cyclophosphamide) (30–32), immune checkpoint inhibitors (programmed cell death 1, programmed death ligand 1, or CTL-associated protein 4) (33, 34), and many targeted therapies, particularly monoclonal antibodies and tyrosine kinase inhibitors (35, 36), CART therapy (37–39), natural killer cell immunotherapy (40), and hematopoietic stem cell transplantation (41–43).