Abstract
The TF (Thomsen-Friedenreich, CD176, Galβ1-3GalNAc) carbohydrate moiety is known as a specific oncofetal carbohydrate epitope present in fetal and neoplastic tissue as well as in stem cells. TF was demonstrated to mediate tumor-promoting features and to be highly immunogenic. The current study aimed to evaluate whether presence of the TF antigen is associated with clinico-pathological parameters and prognosis of early breast cancer (BC). Primary BC tissue (n = 226) was stained for TF using two monoclonal anti-TF antibodies (Nemod-TF1, Nemod-TF2). Staining results were correlated to clinical data including survival. Nemod-TF1 staining was positively correlated to lymph node metastasis (p = 0.03) and the presence of tumor-associated MUC1 (TA-MUC1; p = 0.003). Further, the presence of the Nemod-TF1 epitope predicted worse prognosis in TA-MUC1 positive (overall survival: p = 0.026) as well as in triple negative (overall survival: p = 0.002; distant metastasis-free survival: p = 0.012) BC. The data presented here further support a role of TF in BC tumor biology. Whether anti-TF directed treatment approaches may gain clinical relevance in those cases determined as triple negative or TA-MUC1 positive remains to be determined.
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