Active clinical trials for "Hyperparathyroidism, Secondary"

The purpose of this study is to characterize the safety and tolerability and efficacy of multiple ascending doses of etelcalcetide in hemodialysis patients for the treatment of secondary hyperparathyroidism (HPT).

To evaluate the effect of PTH lowering on erythropoietin consumption in calcitriol-resistant patients with stage 5 chronic kidney disease.

Active parathyroid glands among renal dialysis patients contribute to calcified and hardened blood vessels. Such damage to the blood vessels, in turn, takes a significant toll in terms of cardiovascular disease. Calcimimetics has been suggested to lower the risk of vascular calcification. Role of cinacalcet was demonstrated in animal model but human data are lacking. The investigators designed an open label pilot study to evaluate the effect of cinacalcet in 20 peritoneal dialysis patients with inadequately controlled secondary hyperparathyroidism despite standard treatment. The primary outcome is the aortic pulse wave velocity at 26 and 52 months after cinacalcet treatment.

Evaluate the efficacy of paricalcitol, cholecalciferol, and placebo in the reduction of parathyroid hormone in patients after Roux-en-Y gastric bypass surgery (RYGB). Assess changes, if any, in measures of self-assessed well-being attributable to paricalcitol after RYGB. Evaluate the rates of hypercalcemia, kidney stones, gastrointestinal side effects, and other organ system adverse effects of paricalcitol, cholecalciferol, and placebo in patients after RYGB

The purpose of this study is to observe the effectiveness and safety of the use of a low initial dose regime (iPTH/100) in chronic kidney disease patients with secondary hyperparathyroidism (PTH>300pg/mL) and that require dialysis at least 3 times per week.

This study will measure serum levels of the active Vitamin D compound that circulates in hemodialysis subjects treated with either doxercalciferol injection (Hectorol®) or Zemplar® (paricalcitol injection).

The purpose of this study is to evaluate the effects of cinacalcet on markers of bone turnover in patients with kidney disease who are receiving dialysis.

The purpose of this study was to compare two different initial dosing schemes for the administration of paricalcitol in hemodialysis patients with secondary hyperparathyroidism: the already in use iPTH/80 scheme, and an iPTH/120 scheme, which corresponds to the immediately lower dose, based on current instructions on paricalcitol dose adjustment. We studied the effectiveness of the two dosing schemes in achieving a target iPTH level (150 - 300 pg/mL)

The purpose of this study is to evaluate the effects of cinacalcet (cinacalcet HCl or Sensipar®/Mimpara®) on cardiovascular events and death in chronic kidney disease (CKD) patients with secondary hyperparathyroidism (HPT) who are receiving dialysis.

The majority of patients with moderate to severe chronic kidney disease (CKD) (stages 3 and 4) develop secondary hyperparathyroidism (2°HPT), but the optimal therapy to control hyperparathyroidism in this group is unknown. The National Kidney Foundation presented guidelines in 2003 recommending vitamin D supplementation for vitamin D insufficient patients and active vitamin D therapy in patients with sufficient levels. These guidelines are based on opinion since there are no significant trials to determine if vitamin D supplementation is effective in this population. The active vitamin D metabolites doxercalciferol, paricalcitol, and calcitriol have been shown to effectively suppress parathyroid hormone (PTH), but have not been compared with vitamin D supplementation with a calciferol (ergocalciferol or cholecalciferol). Beyond hyperparathyroidism, small studies suggest vitamin D replacement in vitamin D insufficient non-CKD subjects result in improved pain, feeling of well being, blood pressure and strength. In this proposed study we wish to directly compare the effectiveness of cholecalciferol versus doxercalciferol in suppressing elevated PTH levels in subjects with CKD not on dialysis who have vitamin D insufficiency in a three month study. Secondary endpoints will be change in blood pressure.