BMPR2 expression levels in different types of human cancer. (A) Abnormal expression of BMPR2 in data sets of different cancer types compared with normal tissues in the Oncomine database. (B) BMPR2 expression was higher in osteosarcoma (14 samples) compared with in normal tissues (four samples). BMPR2 expression level was higher in AMRS (15 samples) and ERMS (15 samples) compared with in the normal tissues (26 samples). (C) BMPR2 expression was significantly higher in metastatic osteosarcomas than in non-metastatic osteosarcomas. BMPR2 expression was significantly higher in sarcomas that did not respond well to chemotherapy compared with in those that did. (D) High expression level of BMPR2 was associated with worse OS and metastasis-free OS. (E) AUC values for the expression level of BMPR2 in predicting metastatic and 5-year survival. (F) High expression level of BMPR2 was associated with worse OS. ARMS, acinar rhabdomyosarcoma; ERMS, embryonal rhabdomyosarcoma; BMPR2, bone morphogenetic protein receptor 2; OS, overall survival; AUC, area under the curve.