By carrying out multiple linear regression analysis of biomarkers and clinical laboratory data, we found that urinary 11-dehydro-TXB2 was predicted by urinary PGDM, platelet COX-1, tumor mRNA COX-2, and MCHC (mean corpuscular hemoglobin concentration) (Supplementary Table S4A). The gene discussed is PTGS1; the disease is neoplasm.