Given that activation of HDACs could regulate PD-L1 expression in myeloma and B-cell lymphomas (17, 18), we further searched for PD-L1 (CD274) in the Protein Atlas website (https://www.proteinatlas.org/ENSG00000120217-CD274/pathology). The gene discussed is CD274; the disease is B-cell non-Hodgkin lymphoma.