P4HA1 and neoplasm: By analyzing the correlation between P4HA1 expression and immune cell infiltration using immune cell infiltration data from a published study (Thorsson et al., 2018), we found that P4HA1 was positively associated with TAMs infiltration in most tumor types, including LUAD (Figures 8A–C), but negatively associated with immune killer cells, such as activated NK cells, CD8 T cells, and lymphocytes in LUAD (Figures 8D–F).