SLITRK6 belongs to the SLITRK family. Members of this family share two conserved leucine-rich repeat domains in the extracellular domain. SLITRK6 contains 11 LRR (leucine-rich) repeats, 2 LRRCT domains and 2 LRRNT domains. Expression of SlITRK proteins is highly restricted to neural and brain tumor tissues, but varies within the protein family. SLITRK6 is highly expressed in putamen with no expression in cerebral cortex. It also can be detected in adult and fetal lung and fetal liver. It can suppress neurite outgrowth. In adult brain, SLITRK6 has a critical role in the development of the inner ear neural circuit.