Their study identified a panel of IL-8, interferon gamma-induced protein 10 (IP-10), IL-1b, and platelet-derived growth factor (PDGF) as having a more significant impact on classifying patients with PDAC and benign disease in the presence of obstructive jaundice compared to CA19-9 [20]. This evidence concerns the gene CXCL8 and obstructive jaundice.