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The Kaplan-Meier curves of the Luminex xMAP assay of the p27 autoantibody in 233 OS serum samples. Using a median intensity cutoff, a higher level of the p27 autoantibody significantly correlated with the poor overall survival (top) and event-free survival (bottom) of the OS patients (left panel). The middle and the right panels show the Kaplan-Meier curves when stratified by the initial metastasis status.
