Subsequently a slow activating potassium channel current similar to rat Eag (rEag) in neuroblastoma cells (h-Eag) was characterised and it was demonstrated that the electrical current was reduced to 5% of the control value when the neuroblastoma cells were synchronised to G1 phase of the cell cycle on treatment of retinoic acid, thus indicating their role in cell cycle [43]. Here, KCNA3 is linked to neuroblastoma.