ALDH1A1 and neoplasm: On multivariate analysis, high ALDH1 expression score was significantly associated with poor metastases-free survival (hazard ratio = 1.5 [95% CI 1.3–1.8], p = 0.04), together with grade 3 (hazard ratio = 1.5 [95% CI 1.3–1.8], p = 0.004), and a tumor size of > 10 cm (hazard ratio = 1.5 [95% CI 1.3–1.8], p = 0.001).