This panel must contain not only all genes that cause BS and Gitelman syndrome but also genes that overlap phenotypically with BS and should be considered in differential diagnosis with BS: SLC12A1, KCNJ1, CLCNKB, CLCNKA, BSND, MAGED2, SLC12A3, CASR, KCNJ10, SLC26A3, CLDN10, SCNN1A, SCNN1B, SCNN1G, NR3C2, HSD11B2, CYP11B1, CLCN2, KCNJ5, and CACNA1H (1). The gene discussed is HSD11B2; the disease is Bloom syndrome.