Novel mutations in GCK and HNF1A genes in Italian families with MODY phenotype.

Analysis of GCK and HNF1A genes in 32 MODY families identified three novel mutations: the missense mutation G170D and the deletion/insertion P432Xfs in GCK and the splicing mutation IVS4nt-1G>T, in HNF1A. For IVS4nt-1G>T the sequence analysis of RT-PCR products demonstrated exon skipping with the use of a cryptic splicing site.