CD8A and neoplasm: Lohneis and colleagues [15] reported improved OS (HR 0.61, 95% CI 0.23–0.99; p = 0.01) and DFS (HR 0.55, 95% CI 0.17–0.93; p = 0.002) with high compared to low CD8 infiltration in the stromal area of PDAC tumours.