A prevalent variant in PPP1R3A impairs glycogen synthesis and reduces muscle glycogen content in humans and mice. - Savage DB; Zhai L; Ravikumar B; Choi CS; Snaar JE; McGuire AC; Wou SE; Medina-Gomez G; Kim S; Bock CB; Segvich DM; Solanky B; et al. (PLoS medicine, 2008)