The patient’s detailed findings highlighted the following abnormalities: an accelerated erythrocyte sedimentation rate (ESR: 101 mm/h), elevated CRP (64 mg/L), moderate microcytic anemia with leukocytosis and thrombocytosis (WBC: 12.14 G/L; RBC: 4.24 T/L; hgb: 103 g/L; HTC: 0.34 L/L; MCV: 79 fL; PLT: 445 G/L), and monoclonal IgM proliferation (14.5 g/L, IgM kappa type). Here, CD40LG is linked to thrombocytosis disease.