Regarding the correlation with HLA class I expression, significant differences were not detected for age (p = 0.570), smoking status (p = 0.151), alcohol consumption (p = 0.773), performance status (p = 0.617), tumor differentiation (p = 1.000), T classification (p = 0.711), N classification (p = 0.518), or CD4+ TIL density (p = 0.245). The gene discussed is CD4; the disease is neoplasm.