PKD2 and autosomal dominant polycystic kidney disease: We could not identify the genetic mutation of P1 in the exons of PKD1/PKD2 genes, but found intronic mutations 8161 + 38G > A and 2986-15C > T, which are described in ADPKD Mutation Database [PKDB] (http://pkdb.mayo.edu/) (Table 1).