SLC38A8 and familial hyperaldosteronism: FH is caused by disruption of the normal development of the fovea from fetal week 22–25 to 15–45 months after birth; [5, 8] it could often be divided into FH1 (autosomal-dominant) and FH2 (autosomal-recessive), and PAX6 gene and SLC38A8 gene were reported to be responsible for them respectively [9].