In other entities of B‐NHL, the prevalence of PD‐L1 expression in neoplastic B cells is relatively low, and is approximately 5% in follicular lymphoma (FL), 10% in high‐grade marginal zone lymphoma (MZL), and absent in mantle cell lymphoma (MCL).42, 44, 45, 46. This evidence concerns the gene CD274 and mantle cell lymphoma.