The concentration of POMGNT2 in the ER of the aforementioned retinal cells was consistent with results previously obtained in other studies where POMGNT2 had been localized to the ER of the HEK293 cell line [39,43], of HeLa cells [45] and of the Neuro-2a cell line, derived from mouse neuroblastoma cells [44]. Here, POMGNT2 is linked to neuroblastoma.