“…However, while the results of anti-angiogenic therapy in preclinical models have provided promising results, there is some discrepancy between these data and those obtained in CTs, and to date, there is no anti-angiogenic treatment approved by the FDA for the treatment of PCa. Anti-angiogenic treatments face several major challenges including intrinsic or acquired resistance, enhanced metastasis during treatment, relevant side-effects, and the lack of validated biomarkers for monitoring response to therapy that must be solved before introducing them into clinical practice [3,10,14,15]. As we continue to learn more about the angiogenesis process, therapies with new molecular targets will emerge, and together with the numerous ongoing and future CTs they will help to clarify the usefulness of antiangiogenic treatments in PCa.…”