Chronic Kidney DiseasePhase 4NCT00749736
The Role of Vitamin D in Immune Function in Patients With Chronic Kidney Disease (CKD) Stages 3 and 4.
A Phase 4 study testing cholecalciferol and doxercalciferol in people with Chronic Kidney Disease, run by Indiana University at 1 site in United States.
Trial summary
Patients with chronic kidney disease (CKD) are commonly deficient in vitamin D, with low levels of both calcidiol (25 hydroxy vitamin D) and calcitriol (1,25-hydroxy vitamin D). Patients with CKD are also known to have abnormalities in their immune cells, increased susceptibility to infection and increased prevalence… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Chronic Kidney Disease
- What is being tested?
- cholecalciferol and doxercalciferol
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 100 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2008to Jul 2012
- Phase
- Phase 4
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- no administration of any form of vitamin D supplement or therapy in the last 60 days except for that in a multi vitamin
- Hgb >10 mg/dl
- able to sign informed consent
- CKD stage 3 (GFR 30-59ml/min) or stage 4 (GFR 15-29ml/min)
- iPTH <70pg/ml for stage 3 or iPTH <110pg/ml for stage 4
- calcidiol levels < or +20ng/ml
Who cannot join
- initial corrected Calcium >9.7mg/dl
- initial serum Phosphorus >5.0mg/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 60 days prior to enrollment
Trial locations and contacts
1 site in 1 country.
United States1 site
Indiana University School of Medicine
Indianapolis, Indiana, 46202
About this study
Official title: The Role of Vitamin D in Immune Function in Patients With CKD Stages 3 and 4.
Patients with chronic kidney disease (CKD) are commonly deficient in vitamin D, with low levels of both calcidiol (25 hydroxy vitamin D) and calcitriol (1,25-hydroxy vitamin D). Patients with CKD are also known to have abnormalities in their immune cells, increased susceptibility to infection and increased prevalence of malignancies. In patients without kidney disease, repletion of vitamin D appears to help some immune mediated diseases. Thus it is logical that patients with CKD who are vitamin D deficient may benefit from repletion of vitamin D, in either its native form (cholecalciferol/ergocalciferol) or in the form of calcitriol or its analogues. However, no interventional data demonstrates that repletion positively impacts immune status in CKD patients. To test this hypothesis, a large interventional study will be required. However, prior to conducting this study, several important steps are needed. The present proposal aims to generate the necessary data to appropriately plan and conduct a future multi center interventional study. Specifically, we will examine the following specific aims in a population of CKD stage 3 and 4 subjects from Indiana University Affiliated Nephrology Clinics and determine
- if abnormalities in immune cells and immune blood tests are related to abnormalities in vitamin D.
- how reproducible these changes are on repeat testing and
- if repletion of vitamin D changes these cells and immune blood tests in a small pilot study.
- Conditions
- Chronic Kidney Disease
- Being tested
- cholecalciferol, doxercalciferol, placebo
- Keywords
- vitamin D, determine, normal, intrapatient, interpatient, variability, measures, immune system
- Medical subject headings
- Renal Insufficiency, Chronic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
cholecalciferolDietary supplement
4000 IU of cholecalciferol per day
15 patients will be enrolled in each arm.
doxercalciferolDietary supplement
1 mcg of doxercalciferol per day
placeboDietary supplement
placebo for 6 months; with stratification based on stage of CKD by modified MDRD formula.
15 patients will be enrolled in each arm.
| Study group | Role | What they receive |
|---|---|---|
| 1 | Active comparator | 4000 IU of cholecalciferol per day Receives: Dietary Supplement: cholecalciferol |
| 2 | Active comparator | 1 mcg of doxercalciferol per day. Receives: Dietary Supplement: doxercalciferol |
| 3 | Placebo comparator | placebo for six months Receives: Dietary Supplement: placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
The primary endpoint will be the change in CD4+/CD8+ ratio and other flow cytometry parameters based on the results of Aims 1 and 2, TH1/TH2 cytokine profile, and conversion from anergic to reactive skin testing.
Measured: 6 months from baseline visit
Secondary outcomes (1)
A change in mean blood pressure from one week of ambulatory measures, random protein/creatinine ratio, and differences in muscle strength by timed up and go test, and measures of quality of life using the SF36 forms.
Measured: 6 months from baseline visit.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Sep 2008 (estimated)
- Study startJul 2008
- Primary completionJul 2012
- Study completionJul 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Chronic Kidney DiseaseStudies of the same condition, open and under way.
- More trials run by Indiana UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Indiana University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Sharon M Moe, MD, Principal investigator, Indiana University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00749736
- Sponsor's protocol ID
- 0707-04
- Status last verified
- Mar 2013
- First submitted
- 8 Sep 2008
- Last updated
- 29 Mar 2013
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 29 Mar 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Role of Vitamin D in Immune Function in Patients With CKD Stages 3 and 4.
- ClinicalTrials.gov ID
- NCT00749736
- Acronym / sponsor ID
- 0707-04
- Conditions
- Chronic Kidney Disease
- Keywords
- vitamin D, determine, normal, intrapatient, interpatient, variability, measures, immune system
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Indiana UniversityUniversity, hospital or other
- Study start
- Jul 2008
- Primary completion
- Jul 2012 (actual)
- Study completion
- Jul 2012 (actual)
- First posted
- 9 Sep 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Patients with chronic kidney disease (CKD) are commonly deficient in vitamin D, with low levels of both calcidiol (25 hydroxy vitamin D) and calcitriol (1,25-hydroxy vitamin D). Patients with CKD are also known to have abnormalities in their immune cells, increased susceptibility to infection and increased prevalence of malignancies. In patients without kidney disease, repletion of vitamin D appears to help some immune mediated diseases. Thus it is logical that patients with CKD who are vitamin D deficient may benefit from repletion of vitamin D, in either its native form (cholecalciferol/ergocalciferol) or in the form of calcitriol or its analogues. However, no interventional data demonstrates that repletion positively impacts immune status in CKD patients. To test this hypothesis, a large interventional study will be required. However, prior to conducting this study, several important steps are needed. The present proposal aims to generate the necessary data to appropriately plan and conduct a future multi center interventional study. Specifically, we will examine the following specific aims in a population of CKD stage 3 and 4 subjects from Indiana University Affiliated Nephrology Clinics and determine
- if abnormalities in immune cells and immune blood tests are related to abnormalities in vitamin D.
- how reproducible these changes are on repeat testing and
- if repletion of vitamin D changes these cells and immune blood tests in a small pilot study.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| 1 | Active comparator | Dietary Supplement: cholecalciferol4000 IU of cholecalciferol per day |
| 2 | Active comparator | Dietary Supplement: doxercalciferol1 mcg of doxercalciferol per day. |
| 3 | Placebo comparator | Dietary Supplement: placeboplacebo for six months |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- no administration of any form of vitamin D supplement or therapy in the last 60 days except for that in a multi vitamin
- Hgb >10 mg/dl
- able to sign informed consent
- CKD stage 3 (GFR 30-59ml/min) or stage 4 (GFR 15-29ml/min)
- iPTH <70pg/ml for stage 3 or iPTH <110pg/ml for stage 4
Key exclusion criteria (7 listed)
- initial corrected Calcium >9.7mg/dl
- initial serum Phosphorus >5.0mg/dl
- initial standardized blood pressure of >160/100
- history of significant liver disease or cirrhosis
- anticipated requirement for dialysis in 6 months
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| cholecalciferol4000 IU of cholecalciferol per day 15 patients will be enrolled in each arm. | Dietary supplement | 1 |
| doxercalciferol1 mcg of doxercalciferol per day | Dietary supplement | 2 |
| placeboplacebo for 6 months; with stratification based on stage of CKD by modified MDRD formula. 15 patients will be enrolled in each arm. | Dietary supplement | 3 |
Primary outcome
The primary endpoint will be the change in CD4+/CD8+ ratio and other flow cytometry parameters based on the results of Aims 1 and 2, TH1/TH2 cytokine profile, and conversion from anergic to reactive skin testing.
Time frame: 6 months from baseline visit
1 secondary outcome
A change in mean blood pressure from one week of ambulatory measures, random protein/creatinine ratio, and differences in muscle strength by timed up and go test, and measures of quality of life using the SF36 forms.
Time frame: 6 months from baseline visit.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Mar 2013.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Sharon M Moe, MD principal investigator
Indiana University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing cholecalciferol and doxercalciferol in people with Chronic Kidney Disease, run by Indiana University at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Mar 2013. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
The primary endpoint will be the change in CD4+/CD8+ ratio and other flow cytometry parameters based on the results of Aims 1 and 2, TH1/TH2 cytokine profile, and conversion from anergic to reactive skin testing. (time frame: 6 months from baseline visit). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Mar 2013.