KCNJ1 and Gerstmann syndrome: WGS analysis of leukocyte DNA from the patient revealed an absence of abnormalities in SLC12A3, KCNJ10, FXYD2, and HNF1B, which are reported to be associated with GS, and in KCNJ1 or BSND, which are associated with BS type 2 and BS type 4A, respectively (see Table 1).