- The IHPK1 gene is disrupted at the 3p21.31 breakpoint of t(3;9) in a family with type 2 diabetes mellitus. Kamimura, J., Wakui, K., Kadowaki, H., Watanabe, Y., Miyake, K., Harada, N., Sakamoto, M., Kinoshita, A., Yoshiura, K., Ohta, T., Kishino, T., Ishikawa, M., Kasuga, M., Fukushima, Y., Niikawa, N., Matsumoto, N. J. Hum. Genet. (2004)