• Daniela D Rosa, Gustavo Ismael, LagoLissandra DalLD, and Ahmad Awada.
• Medical Oncology Clinic, Jules Bordet Institute, and L Universite Libre de Bruxelles (ULB), Brussels, Belgium. dornellesrosa@hotmail.com
• Cancer Treat. Rev. 2008 Feb 1; 34 (1): 61-80.

AbstractOver the past decade, molecular-targeted therapies have been added to cytotoxic and anti-endocrine drugs in the treatment of cancer, with the aim to target the molecular pathways that underlie the carcinogenic process and maintain the cancer phenotype. Success with some of these agents has suggested that identification and validation of the drug target is the starting point for the route of development of active, safe and effective drugs. Main molecular targets used to the development of anticancer drugs are cell surface receptors, signal transduction pathways, gene transcription targets, ubiquitin-proteasome/heat shock proteins and tumour microenvironment components (especially antiangiogenic agents). Here, we review the development of the main molecular targeted non-cytotoxic agents studied in cancer, highlighting lessons derived from the development of these novel drugs and proposing new horizons for the clinical development of molecular-targeted therapies.

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