CCND1 and mantle cell lymphoma: The appearance of cyclin D1 (CCND1) is surprising given the fact that the t(11;14)(q13;q32) translocation (resulting in juxtaposition of IgH enhancer elements with the CCND1 gene and cyclin D1 overexpression) is the genetic hallmark of mantle cell lymphoma [26] and is characteristic of both JeKo and Granta 519 MCL cell lines [27].