Several studies already reported lack of TDP-43 abnormalities in mutant SOD1 transgenic mice.40,41 Since TDP-43-cKO mice have reduced Neat1 expression in the motor neuron without TDP-43 as described above, we refrained from using TDP-43-KO mice as ALS model mice in this experiment. Here, SOD1 is linked to amyotrophic lateral sclerosis.