SLC34A3 and hyperphosphatemia: To clarify the role of Npt2c in hyperphosphatemia in KLKO mice, we generated α‐klotho−/−Npt2c−/− (KL2cDKO) mice for comparison with the α‐klotho−/−Npt2a−/− (KL2aDKO) mice (Figure 2).