We found that despite normal localization of mGluR6 (Figures 4D and 4E) originally reported by Omori et al. (2012) and Sato et al. (2008), targeting of GPR179 to the dendritic tips of ON-BC was compromised, as evidenced by substantial reduction in the GPR179-positive synaptic puncta in the OPL (Figures 4D and 4E). This evidence concerns the gene GRM6 and breast cancer.