Heterozygous carriers of SLC34A3/NPT2c mutations have intermediate biochemical findings. Summary of biochemical values of presented kindreds and published kindreds analyzed with respect to genotype. Individual values with mean±95% confidence interval are shown for (A) serum PTH levels, (B) normalized ALP, (C) uCa/uCrea, and (D) TRP. %UL, percent upper limit of normal; het, heterozygous; wt, wild-type.