The other had the BAFF level of 4910.4 pg/mL, exhibited a marked increase I KL-6 (70,010 U/mL), carcinoembryonic antigen (80.0 ng/mL), cytokeratin subunit 19 fragment (53.0 ng/mL), and was complicated by myelodysplastic syndrome (MDS). Here, CEACAM5 is linked to myelodysplastic syndrome.