PTH and sexually transmitted disease: In patients with severe SHPT, weobserved a broader reduction in TCa, iCa, PTH, and AP values in the PTX groupcompared to the other groups (Table 1).Normal levels of PTH were reached in 31%, 14%, and 80% of patients from STD, STD+ CIN, and PTX groups, respectively (p < 0.0001, Figure 2B).