SLC20A2 and bilateral striopallidodentate calcinosis: A recent publication on an autopsied PFBC patient heterozygous for a SLC20A2 missense variant (p.Ser637Arg) reported in two Japanese families is indeed congruent with a dominant negative effect exerted by a PiT2 variant protein (Yamada et al. 2014; Kimura et al. 2015).