Abstract

CAG-repeat expansions underlie fatal neurodegenerative disorders. In a lodestar study published in a recent issue of Nature, Sun etal.1 identify a writer and eraser of N1-methyladenosine (m1A) modifications of CAG-repeat RNA. They establish that m1A modifications in CAG-repeat expanded RNA promote neurodegeneration and aberrant phase transitions of TDP-43. These findings suggest therapeutic strategies for CAG-repeat expansion disorders.

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