Based on the Detwiller sarcoma database analysis, the multiple changes in pcna expression in pleomorphic liposarcoma, leiomyosarcoma, fibrosarcoma, synovial sarcoma, and malignant fibrous histiocytoma were 3.836, 3.155, 3.750, 2.385, and 3.444, respectively. This evidence concerns the gene PCNA and undifferentiated pleomorphic sarcoma.