7. Conclusions

Circulating tumor cells are currently considered one of the most promising biomarkers for prediction of survival and monitoring of therapy in solid malignancies. While their prognostic significance has long been proven in early and metastatic breast cancer, further research is urgently needed to examine the possibility of guiding treatment decisions based on the presence and phenotype/genotype of CTCs (Table 2).


Table 2. Clinical role of CTCs in early and metastatic breast cancer.
