Cholecalciferol Versus Doxercalciferol in the Treatment of Secondary Hyperparathyroidism in Chronic Kidney Disease

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00285467
Recruitment Status : Completed
First Posted : February 2, 2006
Results First Posted : May 2, 2016
Last Update Posted : May 2, 2016
Information provided by (Responsible Party):
Indiana University ( Indiana University School of Medicine )

Brief Summary:
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.

Condition or disease Intervention/treatment
Renal Osteodystrophy Drug: doxercalciferol Drug: Cholecalciferol

Detailed Description:
Patients with CKD stage 3 were randomly allocated (by blinded group allocation) to either cholecalciferol (4000 U per day for one month then 2000 IU daily thereafter) or doxercalciferol (2.5 mcg po daily. Assessments for blood endpoints (primary end point PTH; secondary calcium, phosphorus) were done monthly. Other assessments (blood pressure) were done at baseline and at 3 months.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 55 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: Comparison of Cholecalciferol Versus Doxercalciferol in the Treatment of Secondary Hyperparathyroidism in CKD
Study Start Date : January 2006
Primary Completion Date : December 2009
Study Completion Date : December 2009

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Vitamin D
U.S. FDA Resources

Arm Intervention/treatment
Experimental: Doxercalciferol
doxercalciferol 1 mcg capsule orally daily for 3 months. This is a form of vitamin D that does not require activation by enzymes in the liver and kidney.
Drug: doxercalciferol
form of vitamin D that is already in active form.
Other Name: Hectoral
Active Comparator: Cholecalciferol
cholecalciferol 4000 IU capsule orally daily for one month, then 2000 IU capsule daily orally for 2 months. this form of vitamin D requires activation by cells of the body.
Drug: Cholecalciferol
from of vitamin D that requires cells in the body to make active
Other Name: vitamin D3

Primary Outcome Measures :
  1. Percent Reduction in PTH [ Time Frame: 3 month ]
    Percent reduction in PTH from baseline to 3 months

Secondary Outcome Measures :
  1. Systolic Blood Pressure at 3 Months [ Time Frame: 3 month ]
    systolic blood pressure at 3 months

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 82 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • age 18 years old or older, male or female
  • able to sign informed consent
  • CKD stage 3 (GFR 30-59 ml/min) or stage 4 (15-29 ml/min)
  • intact Parathyroid hormone level (iPTH) > 100 pg/ml for stage 3 or iPTH > 150 pg/ml for stage 4
  • calcidiol levels ≤ 20 ng/ml
  • ability to ambulate without assistance

Exclusion Criteria:

  • intact PTH > 400 pg/ml
  • initial corrected Calcium > 9.7 mg/dl
  • initial serum Phosphorous > 5.0 mg/dl
  • initial standardized blood pressure of > 160/100
  • history of significant liver disease or cirrhosis
  • anticipated requirement for dialysis in 6 months
  • malabsorption, severe chronic diarrhea, or ileostomy
  • no calcimimetic or active vitamin D therapy 30 days prior to enrollment
  • use of digoxin, magnesium containing products, mineral oil, or cholestyramine

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00285467

United States, Indiana
Indiana University School of Medicine
Indianapolis, Indiana, United States, 46202
Sponsors and Collaborators
Indiana University School of Medicine
Study Director: Sharon Moe, MD Indiana University School of Medicine

Publications of Results:
Responsible Party: Indiana University School of Medicine Identifier: NCT00285467     History of Changes
Other Study ID Numbers: 0508-06
First Posted: February 2, 2006    Key Record Dates
Results First Posted: May 2, 2016
Last Update Posted: May 2, 2016
Last Verified: April 2016
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Keywords provided by Indiana University ( Indiana University School of Medicine ):
kidney, parathyroid hormone, vitamin d

Additional relevant MeSH terms:
Hyperparathyroidism, Secondary
Chronic Kidney Disease-Mineral and Bone Disorder
Parathyroid Diseases
Endocrine System Diseases
Bone Diseases, Metabolic
Bone Diseases
Musculoskeletal Diseases
Kidney Diseases
Urologic Diseases
Metabolic Diseases
Calcium Metabolism Disorders
Vitamin D Deficiency
Deficiency Diseases
Nutrition Disorders
Vitamin D
1 alpha-hydroxyergocalciferol
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents