While CRCT1 was found to be fused with MAML2 in mucoepidermoid carcinomas, as in mucoepidermoid carcinomas elsewhere in the body, YAP1 was identified as the fusion partner of MAML2 in metaplastic thymomas and KMT2A in type B2 and B3 thymomas. Here, KMT2A is linked to thymoma.