About Pricing FAQs Blog

Loading clinical trials...

Your health journey, clearly organized.

Find Clinical Trials →

Legal

Privacy Policy
Terms of Service

© 2026 Clareo Health. All rights reserved.

Back to clinical trial search

COMPLETEDNANCT00748618

Vitamin D Replacement After Kidney Transplant

Vitamin D deficiency accelerates vascular risk progression after kidney transplant.

Lead sponsor: University of Nebraska•1 U.S. locations•View source on ClinicalTrials.gov

Clareo plain-language summary

What this study is about

Generating AI summary...

Clareo turns complex medical information into clear understanding you can use.

Bring this clarity to your next appointment.

Keep all your medical notes and next steps in one place.

Start Free Trial

Sponsors

Lead Sponsor

University of Nebraska

This trial will assess the following aims: 1. Time to plateau vitamin D concentrations after initiating vitamin D supplements 2. Safety of vitamin D replacement based on serum and urine calcium 3. Effect of vitamin D on PTH concentration in individuals with elevated parathyroid hormone 4. Effect of vitamin D on markers of insulin resistance and inflammation

Age

19 - No limit years

Sex

ALL

Healthy Volunteers

No

Inclusion Criteria

•Kidney transplant more than 6 months ago
•19 years or older
•25-hydroxy vitamin D ≤35 ng/ml

Exclusion Criteria

•Estimated Glomerular filtration rate (GFR) \<30 ml/min/1.73m²
•Previous small bowel or lung transplant
•Pancreas transplant less than 6 months ago
•Cancer or any condition that would change their weight dramatically in the near future such as malabsorption
•Willing to return for testing every two months
•Women who are pregnant or \< 6 weeks postpartum
•Calcium \> 10.5 mg/dl
•Phosphate \> 4.8 mg/dl
•Drinking more than 2 alcohol drinks a day or 14 drinks per week
•History of parathyroid surgery
•Known granulomatous disease
•Taking any seizure medication that affects vitamin D
•Taking Zemplar ® and/or Rocaltrol ®
•History of kidney stones in the past 20 years
•Not on a stable dose of bisphosphonate for the past three months
•Planning on a pancreas transplant within the next year
•In any other research study

Related studies

RECRUITINGPhase 2

Imlifidase Prior to Kidney Transplant in Highly Sensitised Children

NCT05753930 · Kidney Transplantation in Highly Sensitized Patients

RECRUITINGPhase 3

Shingrix in Renal Transplant Recipients

NCT04128189 · Kidney Transplant Recipient Response to Shingrix Vaccine, Kidney Failure, and more

RECRUITINGPhase 4

Reduced Immunosuppression in Older Renal Transplant Recipients With Trugraf®/TRAC Monitoring (RIOT Trial): A Prospective, Randomized, Multicenter Trial.

NCT06568549 · Kidney Transplantation, Mycophenolate Mofetil

Impact of ExtraCorporeal Phototherapy (ECP) on Auxiliary Follicular T-lymphocytes and Circulating B-lymphocytes During Chronic AntiBody-Mediated Rejection in Kidney Transplantation.

NCT04870437 · Kidney Transplantation

Parathyroidectomy After Kidney Transplantation

NCT07415421 · Hyperparathyroidism, Kidney Transplantation Recipients

View all related studies →

Data from ClinicalTrials.govLast updated on ClinicalTrials.gov: October 26, 2024Terms

Trial snapshot

StatusCOMPLETED

PhaseNA

Enrollment116

Start dateOct 2008

Last updatedOct 26, 2024

Condition

Kidney Transplantation Vitamin D Deficiency

Locations shown

University of Nebraska Medical Center

Omaha, Nebraska

For caregivers

Use Clareo to keep notes, questions, trial details, and next steps organized before and after appointments.

Start free trial →

Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: October 26, 2024Data synced to Clareo: May 10, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

View ClinicalTrials.gov Terms and Conditions