- The gene for glycogen-storage disease type 1b maps to chromosome 11q23. Annabi, B., Hiraiwa, H., Mansfield, B.C., Lei, K.J., Ubagai, T., Polymeropoulos, M.H., Moses, S.W., Parvari, R., Hershkovitz, E., Mandel, H., Fryman, M., Chou, J.Y. Am. J. Hum. Genet. (1998)