Fig 2: Immunohistochemical staining for PIK3CA in PCa and normal prostate tissues in TMA samples. (a) Full view of the immunohistochemistry staining for PIK3CA. (b) Expression level of PIK3CA in PCa tissues was significantly higher than in normal prostate tissues. (c) Immunostaining of PIK3CA high, medium, and low expression.

Fig 3: Development of the prognostic signature based on PIK3CA and SOS1 in the training set. (a) Kaplan-Meier (KM) curves of the BCR in the training cohort. (b) ROC curves and area under the curve (AUC) for 1-, 2-, 3-, 4-, and 5-year survival in the training cohort of the risk model. (c)-(e) Distribution of risk score, OS, and survival status (red dots indicate death; blue dots indicate alive) and the two genes' expression heat map in the training cohort.