DRD3 and neoplasm: In the competing-risks model, tumor differentiation (P = 0.005), metastasis (P = 0.014), invasion (P = 0.028), AJCC stage (P = 0.003), Enneking stage (P = 0.036), and DAXX (P = 0.039), and DRD3 (P = 0.019) expression were independent predictors of death from CS.