CCND1 and endometrial cancer: Our study expands the findings of Moreno-Bueno et al and Ikeda et al [10][11], in which CCND1 mutations at amino acids T286, P287, D289, deletion of amino acids 289–292 and potentially other c-terminal CCND1 mutations, such as nonsense mutation at E275*, E279*, may be important in the pathogenesis of a subset of endometrial cancers.