The two main forms of PKD are autosomal dominant PKD (ADPKD) and autosomal recessive PKD (ARPKD) which are caused by mutations in PKD1 or PKD2 (encoding polycystin‐1 and ‐2) and PKHD1 (encoding for fibrocystin), respectively (Bergmann et al., 2018). The gene discussed is PKHD1; the disease is autosomal dominant polycystic kidney disease.