PPBP and squamous cell carcinoma: When the two sets were combined, the median level of CATPIII/CXCL7 was 1258.99 (928.46, 1857.90) ng/mL in the patients with squamous cell carcinoma and 1257.03 (922.68, 1838.55) ng/mL in the patients with adenocarcinoma, all significantly higher than that in controls (851.80 (632.44, 1023.92) ng/L; Fig. 1C, P < 0.0001).