CCND1 and mantle cell lymphoma: Mantle cell lymphoma (MCL) accounts for approximately 5-7% of non-Hodgkin lymphomas and is frequently characterised by an aggressive clinical progression [1-3]. It originates from naive B-cells within the mantle zone and is commonly associated with cyclin D1 overexpression due to the t(11;14)(q13;q32) translocation [3-5].