CD8A and colorectal carcinoma: Furthermore, we did not observe any significant differences in overall survival when comparing levels of CD8+ T cell in late-stage CRC (HR = 1.1063, 95% CI [0.5128-2.0140], p = 0.9631) and metastatic CRC (HR = 1.7461, 95% CI [0.5936-5.1366], p = 0.2114), as shown in Figure 5A.