2013 RAB40AL loss-of-function mutation does not cause X-linked intellectual disability Kalscheuer, V.; Iqbal, Z.; Hu, H.; Haas, S.; Shaw, M.; Lebrun, N.; Seemanova, E.; Voesenek, K.; Hobson, L.; Ropers, H.H.; Townshend, S.; Raynaud, M.; van Bokhoven, H.; Riazuddin, S.; Chelly, J.; Gecz, J.