From cancer patients to cancer survivors: the issue of Cardioncology--a biological perspective.

Long-term survival of cancer patients can be worsened by cardiovascular morbidity and mortality due to anticancer treatments based on cardiotoxic or antiangiogenic regimens. Growing scientific evidences support a role for circulating endothelial progenitor cells (EPCs) both in cancer pathogenesis and in cardiovascular diseases. High frequency of circulating EPCs seems to play a role in cancer growth and dissemination by favouring tumor angiogenesis and estabilishment of sites of metastasis. On the other hand, high level of circulating EPCs seems to be associated with a lower risk of developing cardiovascular diseases and with improved vascular regeneration after cardiovascular damage. Here, the possibile opposing roles of circulating EPCs in cancer patients suffering from therapy related-cardiovascular diseases are discussed, under the light of the potential modulation of their levels for therapeutic purposes. This can become a relevant issue in the field of cardioncology, the discipline that deals with the managing and treatment of cancer patients suffering from concomitant cardiovascular diseases or who are exposed to an increased risk to develop therapy related-cardiovascular complications.