Similarly, a recent study in HD patients enrolled in the Dialysis Outcomes and Practice Pattern Study (DOPPS) (Phases 4–6) reported that increased PTH immediately prior to HD initiation predicted a higher PTH level 9–12 months later40 and the severity of SHPT was found to be an important clinical factor in determining the response to cinacalcet therapy among HD patients in a real-life observational study41. Here, PTH is linked to Huntington disease.