The analyzed tumors were found to be stable at the microsatellite level; however, some of them showed homozygous deletion of CDKN2A which codes for an inhibitor of CDK4 and CDKN2B. Furthermore, a similar copy number profile was identified for the CDK4, MDM2, and FRS2 genes (all located at 12q14.1) in uterine sarcomas bearing BCOR‐fusions, but not in tumors with BCOR ITD. Here, CDK4 is linked to uterine corpus sarcoma.