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Tolvaptan Open-Label Pilot Efficacy, Tolerability and Safety Study in ADPKD — TEMPO 2/4  

Polycystic Kidney, Autosomal Dominant Clinical Trial

Official title:
A Phase 2, Multi-center, Open-label Study to Determine Long-term Safety, Tolerability and Efficacy of Split-dose Oral Regimens of Tolvaptan Tablets in a Range of 30 to 120 mg/d in Patients With Autosomal Dominant Polycystic Kidney Disease

Clinical Trial Summary

This study's purpose is to evaluate the long-term safety of open-label tolvaptan regimens to determine the maximally-tolerated dose and acquire pilot efficacy data in patients with ADPKD.

Clinical Trial Description

Autosomal Dominant Polycystic Kidney Disease is a genetic disease classified by the formation of fluid-filled cysts in the kidneys. The accumulation of these cysts causes the kidneys to enlarge several times the normal size and leads to the eventual loss of renal function and ultimately results in renal failure in end-stage patients. This is a disease with life-threatening implications to those who have it and their family members who may also be affected. Aside from early antihypertensive control and dietary protein restriction, which are presumed to offer a modest degree of protection, most surviving patients require renal replacement therapy (dialysis and transplant) and suffer from high morbidity and mortality.

A rationale for use of tolvaptan in these genetic disorders has been proven, in principle, through use of a variety of animal models. In these models, tolvaptan is effective in halting or reversing the progression of this renal disease.

The current study is being undertaken in order to evaluate whether tolvaptan, an oral AVP inhibitor, will maintain an adequate safety profile and show a potential clinical benefit by reducing total renal volume in the hopes of making an impact upon disease progression. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00413777
Study type Interventional
Source Otsuka Pharmaceutical Development & Commercialization, Inc.
Contact
Status Completed
Phase Phase 2
Start date December 2005
Completion date June 2010
View Details
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