CD40 and neoplasm: No difference in the expression of CD40 in PDAC patients was observed with respect to the nodal category (pN0 vs. pN+) (Figure 2B), perineural invasion (Pn0 vs. Pn1) (Figure 2C), tumor category (pT1/2 vs. pT3/4), metastasis (M0 vs. M1), grading (G1/2 vs. G3/4), and neoadjuvant treatment (yes vs. no) (Figure S4A–D).