CD68 and neoplasm: The subgroup analysis revealed no association between stromal (HR = 1.30; 95% Cl: [0.55, 3.04]; p = 0.55) or tumour (intra-tumoural) (HR = 1.40; 95% Cl: [0.40, 4.90]; p = 0.60) expression of CD68+ TAMs and OS in OSCC patients (Figure 4B).