Lin et al26 examined 102 patients with ICC and saw that higher PD‐1+CD4+ and PD‐1+CD8+ T cells were found in the high‐NLR group while higher amounts of IFN+CD4+ and IFN+CD8+ T cells were seen in the low‐NLR group. Here, IFNA1 is linked to intrahepatic cholangiocarcinoma.