CD274 and B-cell chronic lymphocytic leukemia: In agreement with their lowest p66Shc expression (Supplementary Figure S1B) (Capitani et al., 2010; Capitani et al., 2019; Patrussi et al., 2021a), U-CLL cells showed a significant enhancement in PD-L1 expression when compared to M-CLL cells (Supplementary Figure S3A).