Complex sentence: The recessive form, called ARPKD (autosomal recessive polycystic kidney disease) is the less common variant, mutations in the "PKHD1" (chromosomal locus 6p12.2) cause ARPKD.
Split into simpler sentences: The recessive form, called ARPKD (autosomal recessive polycystic kidney disease) is the less common variant. Mutations in the "PKHD1" (chromosomal locus 6p12.2) cause ARPKD.