“…Consanguinity in families also suggested autosomal recessive inheritance of FBS. This type of inheritance was further supported by the occurrence of FBS in siblings (Families 14,21,24,30,45,47,48,64,65), and the proximity of places of residence of patients (Cases 2 and 13, 10 and 30). It was ®nally proven by the detection of homozygous mutations in the Glut2 gene in a high proportion of FBS patients (64%), with compound heterozygozity being responsible for the remainder (Santer et al, submitted).…”