Comment on

• Circulating tumour cells early predict progression-free and overall survival in advanced colorectal cancer patients treated with chemotherapy and targeted agents.

  Tol J, Koopman M, Miller MC, Tibbe A, Cats A, Creemers GJ, Vos AH, Nagtegaal ID, Terstappen LW, Punt CJ. Tol J, et al. Ann Oncol. 2010 May;21(5):1006-12. doi: 10.1093/annonc/mdp463. Epub 2009 Oct 27. Ann Oncol. 2010. PMID: 19861577
• Clinical value of circulating endothelial cells and circulating tumor cells in metastatic breast cancer patients treated first line with bevacizumab and chemotherapy.

  Bidard FC, Mathiot C, Degeorges A, Etienne-Grimaldi MC, Delva R, Pivot X, Veyret C, Bergougnoux L, de Cremoux P, Milano G, Pierga JY. Bidard FC, et al. Ann Oncol. 2010 Sep;21(9):1765-1771. doi: 10.1093/annonc/mdq052. Epub 2010 Mar 16. Ann Oncol. 2010. PMID: 20233745