FAP and diffuse large B-cell lymphoma: Accordingly, we found a significant negative correlation (p = 0.022, ρ = −0.38) between the expression levels of FAP and PAX5 in the DLBCL and FL tumor tissues (Table 2C), and FAP expression further showed a negative correlation with bone marrow involvement at the time of diagnosis (p = 0.028, ρ = −0.38).