Using datasets of Barretina Sarcoma, compared with normal samples, MCM4 was overexpressed in pleomorphic liposarcoma, myxofibrosarcoma, dedifferentiated liposarcoma, leiomyosarcoma and myxoid/round cell liposarcoma, with the fold change of 3.142, 3.455, 2.195, 3.042, and 2.227 respectively. The gene discussed is MCM4; the disease is round cell liposarcoma.