Plasma Pi levels of 40‐week‐old KL2cDKO mice also showed hyperphosphatemia (Plasma Pi concentration WT 7.36 ± 0.48 mg/dl, KL2cDKO 12.4 ± 0.75, Npt2c 7.49 ± 0.52, n = 4–8). The gene discussed is SLC34A3; the disease is hyperphosphatemia.