CTAG1B and neoplasm: However, we did not observe any significant correlation between PD-L1 expression and age (p = 0.509), tumor size (p = 0.411), histologic type (p = 0.092), clinical stage (p = 0.795), formation of secondary LAs (p = 0.116), or NY-ESO-1 expression (p = 0.511) (Table 2).