ERBB2 and neoplasm: Lastly, it is important to note that all tumor markers explored in this research - including AE1/AE3, CK20, CDX-2, SATB-2, SYN, CGA, CD56, MLH1, PMS2, Her-2, MSH2, MSH6, and Rictor - were only subjected to qualitative analysis, lacking quantitative analysis.