HSP90AA1 and diffuse large B-cell lymphoma: To understand the mechanism of HSP90α overexpression in a subset of DLBCLs, we first evaluated the HSP90AA1 transcript and protein level in a panel of OxPhos -dependent (K422, Toledo, Ly4, Pfeiffer) or -independent (DHL4, DHL6, Ly1, Ly7) DLBCL cell lines [11, 35].