Figure 3From: Prospective evaluation of serum tissue inhibitor of metalloproteinase 1 and carbonic anhydrase IX in correlation to circulating tumor cells in patients with metastatic breast cancerCorrelation between CTC detection, CAIX and patient outcome. (a) Progression-free survival. (b) Overall survival of metastatic breast cancer patients based on CTC positivity (≥ 5 CTC) and CAIX serum levels. CAIX, carbonic anhydrase IX; CTC, circulating tumor cell.Back to article page