- Mutations in two genes encoding different subunits of a receptor signaling complex result in an identical disease phenotype. Paloneva, J., Manninen, T., Christman, G., Hovanes, K., Mandelin, J., Adolfsson, R., Bianchin, M., Bird, T., Miranda, R., Salmaggi, A., Tranebjaerg, L., Konttinen, Y., Peltonen, L. Am. J. Hum. Genet. (2002)