Si‐METTL3 inhibited the levels of TGF‐β and IL‐10, while si‐METTL3 + NEDD1‐OE increased their release in tumor tissues (Figure 6D,E), indicating that METTL3 promoted immune escape in DLBCL by upregulating NEDD1. Here, NEDD1 is linked to diffuse large B-cell lymphoma.