While the TCGA and other previous sequencing efforts [40, 41, 44] failed to identify recurrent translocations in type A, AB, B1–B3 thymomas and MNTs, a YAP1-MAML2 translocation (with two distinct fusion products) was recently detected by DNA RNA sequencing in all six metaplastic thymomas successfully tested so far [45]. This evidence concerns the gene YAP1 and thymoma.