PKHD1 and autosomal recessive polycystic kidney disease: Renal biopsy confirmed immune complex-mediated MPGN (IC-MPGN), and genetic testing revealed a homozygous, pathogenic missense <i>PKHD1</i> variant (NM_138694.3:c.4870C > T; p.(Arg1624Trp), leading to a diagnosis of autosomal recessive polycystic kidney disease (ARPKD).