Nrf2 is differentially distributed in different cancer stages and subtypes of DLBCL. (A) Elevated NFE2L2 (Nrf2) mRNA levels in DLBCL tissues compared with in normal tissues. (B) Increased % Nrf2-positive cancer cells in advanced stages of DLBCL. (C) Higher frequency of Nrf2-positive cancer cells in the GCB subtype of DLBCL compared with that in the ABC subtype. (D) Higher Nrf2-positive cancer cell numbers in the GCB subtype across all stages of DLBCL. *P<0.05; **P<0.01; ***P<0.001; ****P<0.0001. All IHC sample images are ×20 magnification. ns, no significance; DLBCL, diffuse large B-cell lymphoma; Nrf2, nuclear factor erythroid 2-related factor 2; ABC, activated B-cell; GCB, germinal center B-cell; TPM, transcripts per million; IHC, immunohistochemistry.