We herein describe four unclassified extra-abdominal mesenchymal neoplasms showing epithelioid/round cell morphology and harboring EWSR1::ATF1 fusions and review 6 additional cases carrying the same fusion, reported in three recent studies in a trial to delineate the major features of this putative tumor category. Here, EWSR1 is linked to mesenchymal cell neoplasm.