SOX2 and neoplasm: To investigate potential associations between the stemness markers of interest and well‐established prognostic indicators, we examined the expression levels of each of the three pluripotency markers (SOX2, NANOG, and OCT4), as well as ALDH1A1 in relation to key clinical and molecular tumor prognostic factors (Table 3), as well as histopathologic factors (Table 4).