Comparison of ALK Immunohistochemical staining and fluorescence in situ hybridization analysis results. (n = 27).

AJCC, American Joint Committee on Cancer; ALK, anaplastic lymphoma kinase; CNG, copy number gain; IHC, immunohistochemical staining; ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; TNBC, triple-negative breast cancer.aALK gene copy number status according to the frequency of tumor cells with specific numbers of copies in fluorescence in situ hybridization.bALK IHC score according to the proportion of stained cells to total analyzed cellsComparison of ALK Immunohistochemical staining and fluorescence in situ hybridization analysis results. (n = 27).