Identification of a four-miRNA signature predicts the prognosis of papillary thyroid cancer

Figure 2 The distribution of the risk score, overall survival, and overall survival status and the heat map of the prognostic four-miRNA signature. A: The training cohort; B: Test cohort. The dotted line indicates the cutoff point of the median risk score, which is used to stratify patients into the low-risk and high-risk groups.