Mutations in the PKD1 gene, which encodes the polycystin-1 (PC1) protein, account for approximately 85% of ADPKD cases, while the PKD2 gene, which encodes the polycystin-2 (PC2) protein, accounts for approximately 15% of ADPKD cases [2]. Here, PKD2 is linked to autosomal dominant polycystic kidney disease.