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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Cancer. 2014 Nov 11;121(5):697–707. doi: 10.1002/cncr.29090

Figure 6. DPP activity is not elevated in serum of ES patients, but its high levels associate with better event-free survival.

Figure 6

A. DPP activity was measured in sera of healthy children (ages 6–18), ES patients and osteosarcoma patients by colorimetric method. No significant differences between the experimental groups were observed. B. ES patients with localized disease were categorized in quartiles based on their serum DPP activity. High DPP activity associated with significantly better event-free survival (EFS) among ES patients, as determined by log-rank test (p = 0.0067). C. The effect of DPP levels on overall survival of ES patients with localized disease, tested as above, did not achieve statistical significance (p = 0.1154).