The extent of such discoveries will be particularly important for the diseases, for which so far only a few missense GNA mutations have been identified, such as autosomal dominant congenital stationary night blindness (OMIM 610444: GNAT1), auriculocondylar syndrome-1 (OMIM 602483: GNAI3), autosomal dominant hypocalcemia-2 (OMIM 615361: GNA11), or dystonia-25 (OMIM 615073: GNAL). This evidence concerns the gene GNAL and dystonia 25.