In addition, biochemical and pharmacological data have implicated TSPO in a wide range of pathological conditions, including epilepsy (Veenman et al., 2002), neurodegenerative diseases (Papadopoulos et al., 2006b), and cancer (Han et al., 2003, Maaser et al., 2002, Weisinger et al., 2004). This evidence concerns the gene TSPO and cancer.