Correlations were observed between CD8+ E-TILs and MMR deficiency (P = 0.0097), between CD3+ S-TILs and LVI (P = 0.011), between CD8+ S-TILs and grade (P = 0.014) and between CD8+ S-TILs and LVI (P = 0.013). The gene discussed is CD8A; the disease is mismatch repair cancer syndrome 1.