Still, based on the axonal stratification depth (Helmstaedter et al., 2013) and recent electrophysiological and functional recordings (Ichinose et al., 2014; Franke et al., 2016) this BC type is most likely an ON-CBC, supported by its mGluR6 expression (Shekhar et al., 2016). This evidence concerns the gene GRM6 and breast cancer.