Possible reasons for this discrepancy between our previous results and the results of the present study include the following: In the previous study, some very strong independent risk factors for mortality in hemodialysis patients were not balanced between the low PTH and SHPT groups, namely age (63.19 ± 10.63 versus 55.05 ± 14.09 years, respectively) and diabetes history (34.5% versus 24.5%, respectively). The gene discussed is PTH; the disease is diabetes mellitus.