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lüll Phase 0 trials: an industry perspective Eliopoulos H; Giranda V; Carr R; Tiehen R; Leahy T; Gordon GClin Cancer Res 2008[Jun]; 14 (12): 3683-8Worldwide, cancer is a leading cause of morbidity and mortality. An increased understanding of the disease and its process has resulted in a multitude of new targeted therapies. The costs as well as time from drug discovery to market, however, remain staggeringly high and protracted, with the majority of compounds never reaching phase III. The concept of an exploratory or phase 0 trial was introduced as a mechanism to enhance and accelerate the overall process of new oncologic drug development. Performance of a phase 0 study allows researchers to better understand the pharmacokinetic and pharmacodynamic properties of compounds in human subjects before initiation of phase I trials. Data gleaned from a phase 0 trial are beneficial not only in prioritizing promising compounds but also in allowing the modification of phase I study design before initiation. To date, few researchers have taken advantage of the potential benefits of phase 0 trials. This review focuses on the purpose as well as the potential merits of phase 0 trials from the perspective of a pharmaceutical company. The review summarizes the experience of a team of researchers with ABT-888, a novel poly (ADP-ribose) polymerase agent that inhibits an enzyme critical for repairing damage to DNA, which is one of the first compounds to be investigated using the phase 0 clinical trial design.|Benzimidazoles/adverse effects/pharmacokinetics[MESH]|Clinical Trials as Topic/*methods[MESH]|Clinical Trials, Phase I as Topic/methods[MESH]|DNA Damage/drug effects[MESH]|Drug Design[MESH]|Drug Industry/methods/*trends[MESH]|Enzyme Inhibitors/pharmacology[MESH]|Humans[MESH]|Models, Biological[MESH]|Poly(ADP-ribose) Polymerase Inhibitors[MESH]|Time Factors[MESH] |