The anti-proliferative properties of SRX3305 or SRX3262 (first-generation BTK/PI3K/BRD4 triple-inhibitor) were first evaluated in a panel of B-cell non-Hodgkin lymphoma (B-NHL) cell lines representative of CLL (OSU-CLL, HG-3, MEC-1, and MEC-2) and DLBCL (OCI-LY3 and SU-DHL-6). Here, BRD4 is linked to B-cell chronic lymphocytic leukemia.