However, we found that cancer cells (CD10+ and CD30+ cells) in AITL lacked the expression of PD-L1 (Additional file 5: Fig. S3 and Additional file 8: Fig. S6), whereas CD30+ cells including RSC in Hodgkin lymphoma revealed a co-expression of PD-L1 on the surface of these cells (Fig. 3). Here, MME is linked to angioimmunoblastic T-cell lymphoma.