CDKN2A and undifferentiated pleomorphic sarcoma: The expression level of p16 in the Detwiller's sarcoma database was up-regulated, and the multiple changes in these genes in leiomyosarcoma, pleomorphic liposarcoma, round cell liposarcoma, dedifferentiated liposarcoma, and malignant fibrous histiocytoma were 21.899, 25.731, 11.632, 4.897, and 4.789, respectively.