Testicular receptor 4 (TR4) is a member of the orphan nuclear receptor superfamily. Data suggests that TR4 may function as a regulator that modulates many signaling pathways. It has been suggested that TR4 is required for normal cerebellar development as TR4 knockout mice exhibit behavioral deficits in motor coordination (Chen, YT et al.,2008) and plays important roles in growth, embryonic and early postnatal survival (Collins, LL, et al., 2004).