A prevalent variant in PPP1R3A impairs glycogen synthesis and reduces muscle glycogen content in humans and mice. by Savage, D, Zhai, L, Ravikumar, B, Choi, C, Snaar, J, McGuire, A, Wou, SE, Medina-Gomez, G, Kim, S, Bock, C, Segvich, D, Solanky, B, Deelchand, D, Vidal-Puig, A, Wareham, N, Shulman, G, Karpe, F, Taylor, R, Pederson, B, Roach, P, O'Rahilly, S, DePaoli-Roach, A