CCR4 and head and neck squamous cell carcinoma: Note that we take the published biomarker genes (GIMAP6, SELL, TIFAB, KCNA3, CCR4) related to HNSCC (Ran et al., 2021); (ALK, BRAF, EGFR, ROS1) related to LUAD (Chen et al., 2021); (TMEM190, TUBA3D, LYVE1, LILBR5, CD209) related to BRCA (Liu et al., 2019) as a survival prediction model to make comparisons.