Children with hypovitaminosis D had higher mean PTH levels (4.34 ± 1.38 vs. 3.78 ± 1.25 pmol/L; P-value = 0.04); however and overall, plasma 25(OH)D and PTH were not found to be significantly correlated (r = −0.12; P-value = 0.13) (Figure 3). The gene discussed is PTH; the disease is rickets.