SLC34A1 and hereditary hypophosphatemic rickets with hypercalciuria: Inactivating mutations in the SLC34A1 (sodium-dependent phosphate cotransporter 2a, MIM 182309) give rise to either autosomal recessive hypophosphatemic nephrolithiasis/osteoporosis-1 (MIM 612286) [15, 16] or Fanconi renotubular syndrome-2 (MIM 613388) [17], whereas a loss-of-function mutation in the SLC34A3 (sodium-dependent phosphate cotransporter 2c, MIM 609826) results in hereditary HR with hypercalciuria (HHRH, MIM 241530) [18, 19].