This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

The Effect of Paricalcitol on Creatinine Filtration, Secretion and Glomerular Filtration Rate (Paricalcitol)

This study has been completed.
Information provided by (Responsible Party):
Indiana University Identifier:
First received: July 14, 2010
Last updated: April 2, 2013
Last verified: April 2013
The purpose of this study is to study the effects of Paricalcitol (Zemplar) on kidney functioning. The investigators hypothesize that the increase in serum creatinine observed in recent paricalcitol trials is a function of reduced creatinine secretion and not an actual reduction in kidney function. 16 patients will have kidney function measured via iothalamate clearance at baseline, after 7 days of paricalcitol treatment and after 7 days of being washed off the paricalcitol.

Condition Intervention Phase
Chronic Kidney Disease Drug: Paricalcitol Phase 4

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
Official Title: The Effect of Paricalcitol on Creatinine Filtration, Secretion and Glomerular Filtration Rate

Resource links provided by NLM:

Further study details as provided by Indiana University:

Primary Outcome Measures:
  • 24-hour Urine Creatinine Excretion Rate [ Time Frame: 1 Week ]
    We expect the 24 hour urine creatinine excretion rate to show no differences between groups.

Secondary Outcome Measures:
  • Creatinine Clearance [ Time Frame: 1 Week ]
    The primary outcome variable will be creatinine clearance. Subject will be used as random variable and maximal likelihood estimation methods will be used. We expect no differences between periods.

  • Serum Creatinine [ Time Frame: 1 Week ]
    We expect serum creatinine to confirm the results of creatinine clearance.

Enrollment: 16
Study Start Date: August 2010
Study Completion Date: June 2011
Primary Completion Date: March 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Paricalcitol
After baseline measurements are complete, pt will receive 2 mcg Paricalcitol (Zemplar) for 7 consecutive days. After this, Kidney function will again be measured. The pt will then be washed off the paricalcitol for 7 days then kidney function will be measured for the last time.
Drug: Paricalcitol
2 mcg oral Paricalcitol once per day for 7 days
Other Name: Zemplar


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age > 18 years
  • Stage 3 or 4 CKD
  • Ability to give informed consent

Exclusion Criteria:

  • Serum Calcium > 10 g/dL
  • Serum Phosphorous > 6 g/dL
  • On > 400 units/d Vitamin D therapy
  • Receiving cimetidine, triamterene, or trimethoprim, drugs that block creatinine secretion
  • On vitamin D receptor activators (paricalcitol, calcitriol or Zemplar)
  • Allergic to radiocontrast dye
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01163162

United States, Indiana
Roudebush VA Medical Center
Indianapolis, Indiana, United States, 46202
Sponsors and Collaborators
Indiana University
Principal Investigator: Rajiv Agarwal, MD Indiana University
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Indiana University Identifier: NCT01163162     History of Changes
Other Study ID Numbers: 1003-15
Study First Received: July 14, 2010
Results First Received: April 2, 2013
Last Updated: April 2, 2013

Keywords provided by Indiana University:
Chronic Kidney Disease
Vitamin D

Additional relevant MeSH terms:
Kidney Diseases
Renal Insufficiency, Chronic
Urologic Diseases
Renal Insufficiency
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents processed this record on August 16, 2017