Secondary Hyperparathyroidism
Conditions
Keywords
peritoneal dialysis
Brief summary
This study is designed in order to investigate the effect of cinacalcet in combination with routine conventional medical management for treatment of secondary hyperparathyroidism (SHPT) and Ca, P control. This study will compare the efficacy of a cinacalcet-based regimen with unrestricted conventional care (vitamin D and phosphate binders) for achieving the stringent National Kidney Foundation Kidney Disease Outcomes Quality Initiative (KDOQI) targets for dialysis patients.
Interventions
cinacalcet 25mg qd or 50 mg qd
vit D + P binder
Sponsors
Study design
Eligibility
Inclusion criteria
* Peritoneal dialysis patients with secondary HPT(iPTH \> 300 pg/mL) * \> 18 yr of age, \< 70 * had receive PD for \> 3 mo, * intact PTH level \> 300 pg/ml and \<1000 pg/ml * albumin corrected Ca level \>= 9.0 mg/dL
Exclusion criteria
* pregnant or breast-feeding, * had undergone parathyroidectomy within previous 3 mo, * are involved in other clinical trial within 30 d * had received cinacalcet therapy previously.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| > 30% reduction from baseline of intact parathyroid hormone (iPTH) | 20 weeks |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Achievement of targets for mean Ca x P (<55 mg2/dL2), Ca (<9.5 mg/dL), P (<5.5 mg/dL) | 20 weeks | — |
| Achieving targets for intact PTH (150-300 pg/ml) and calcium-phosphorus product (Ca x P) (<55 mg2/dl2) simultaneously | 20 weeks | — |
| Achievement of treatment goal of intact parathyroid hormone (iPTH) (150~300 pg/ml) | 20 weeks | — |
| Normalization of serum alkaline phosphatase | 20 weeks | Serum alkaline phosphatase measured at baseline and 20 weeks |
| Serum FGF-23 | baseline and 20th week | Elevated serum levels of fibroblast growth factor-23 (FGF23) is associated with adverse outcomes in dialyzed patients. Therefore, we added analysis of change in FGF23 levels between two treatments to explore the cinacalcet effect in lowering FGF23. |
| Vascular calcification score | 20 weeks | Abdominal aortic calcification score (AAC, 0-24) will be measured at baseline and at 20 weeks according to Kauppila et al (Atherosclerosis 2004) |
Countries
South Korea