ELFN1 and diffuse large B-cell lymphoma: We treated OCI‐LY8 and SU‐DHL‐6 with ABT‐263; the MTT assay showed that 0.1, 1, 3 and 10 μm of ABT‐263 caused a time‐dependent, decrease in DLBCL cell growth (Figure S6A); si‐ELFN1‐AS1 combined with the ABT‐263 group significantly inhibited proliferation (Figure S6B) and promoted apoptosis in vitro (Figure S6C).