Chronic Kidney Disease.Phase 3PENNYNCT01680198
Paricalcitol and Endothelial Function in Chronic Kidney Disease Patients (the PENNY Study)
A Phase 3 study testing Paracalcitol in people with Chronic Kidney Disease., run by Fondazione C.N.R./Regione Toscana "G. Monasterio", Pisa, Italy at 1 site in Italy.
Trial summary
The primary aim of this study was to test the hypothesis that Paricalcitol, an active form of vitamin D, improved endothelial function in stage 3-4 chronic kidney disease (CKD) patients. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Chronic Kidney Disease.
- What is being tested?
- Paracalcitol
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 88 participants
- Where
- 1 siteItaly
- Study dates
- Jun 2011to Aug 2012
- Phase
- Phase 3
- 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 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patients with iPTH level > 65 pg/ml; Ca between 8.4- 10.00 mg/dL and P between 2.9-4.5
- Negative serum pregnancy test for female subjects of childbering potential.
- Informed consent.
Who cannot join
- Use vitamin D supplements.
- Altered liver function tests (bilirubin, aminotransferases and total alkaline phosphatase > 3 times the upper limit of normal ranges).
- Sympthomatic cardiovascular disease on the basis of clinical history. Cancer.
Trial locations and contacts
1 site in 1 country.
Italy1 site
Nephrology, Dialysis and Transplantation Unit
Reggio Calabria, Reggio Calabria, 89124
About this study
Official title: Effect of Paricalcitol on Endothelial Function in Chronic Kidney Disease (CKD) Patients (the PENNY Study)
The primary aim of this study was to test the hypothesis that Paricalcitol, an active form of vitamin D, improved endothelial function in stage 3-4 chronic kidney disease (CKD) patients. A secondary aim of this trial was to study the relationship between endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS) (angiotensin II and plasma renin activity).
Read the detailed description
Primary objective: Test the hypothesis that Paricalcitol, an active form of vitamin D improves endothelial function in stage 3-4 chronic kidney disease (CKD) patients.
Secondary analysis: Study the relationship between endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS) (angiotensin II and plasma renin activity).
Background:
Endothelial function is altered in patients with CKD. Factors responsible for disturbed endothelium-dependent vasodilatation in CKD include reduced bioactivity of the nitric oxide (NO) pathway with decreased endothelial NO synthase (NOS) activity or inhibition via accumulation of endogenous inhibitors. In patients with CKD and in those on dialysis serum 25(OH)D3 and 1,25(OH)2D3 levels are associated with FMD. Vitamin D receptors and 1 -hydroxylase activity are present in endothelial and vascular smooth muscle cells and 1,25(OH)2D3 stimulates vascular endothelial growth factor and prostacyclin production by vascular smooth muscle cells. These biological observations may have clinical implications because paricalcitol treatment predicts longer survival in ESRD patients and very recent data link vitamin D to progression to ESRD in patients with stage 3-5 CKD. Furthermore, a previous study by us has shown that the BMSI polymorphism of the vitamin D receptor gene is associated with LVH and LVH progression in ESRD patients.
Study population: Patients with stage 3-4 CKD of both sexes in the age range 18-80 years. Patients taking vitamin D supplements, with abnormal liver function tests, symptomatic cardiovascular disease, diabetes or cancer and those whose medications changed during the study were excluded.
Design and Methods: The study was a double-blind, randomized, parallel groups trial. After baseline measurements, patients with iPTH level > 65 pg/ml; Ca between 8.4- 10.00 mg/dL and P between 2.9-4.5 were randomized to receive 2 micrograms Paricalcitol capsules (or matching placebo) daily, for 12 weeks. This doses was adjusted based on clinical laboratory parameters and the maximum dose was 2 micrograms daily.
During the study if a subject experienced over suppression of serum iPTH (defined as a serum iPTH <15 pg/mL), or hypercalcemia (defined as Ca > 11.0 mg/dL), the subject continued to take study drug at reduced dosage 1 mcg any other day and returned in 2 weeks for an unscheduled visit. If the values from the unscheduled visit serum iPTH and/or Ca did not returned to > 15 pg/mL and/or <11.0 mg/dL, respectively, the drug was discontinued.
Flow mediated vasodilatation was measured according to a validated protocol developed at the coordinating center of a national (Italian)working group of vascular function testing.
Primary end-point: Change in Flow Mediated Dilatation (FMD) induced by Paricalcitol in comparison to Placebo.
Study power: To detect a 2% difference (standard deviation: ± 3.0%) in the change in FMD between Paracalcitol treated and untreated patients with a power of 80 %, a confidence level using a two-tailed test of 5% and a potential attrition rate of 15%, at least 44 patients per group were required (88 patients in total).
Statistical analysis: Data will be summarized as mean ± standard deviation (normally distributed data), median and inter-quartile range (non normally distributed data) or as percent frequency, and comparison between groups will be made by independent T-Test, Mann-Whitney Test, or Chi Square test, as appropriate. Within patients comparisons will be done by statistical tests for paired observations. Data analysis of the primary outcome will be performed by comparing the changes in FMD in Paracalcitol treated and untreated patients by using the T-Test for independent observations. Possible differences in risk factors at baseline not controlled by randomization (i.e. differences due to chance) will be accounted for by using multivariate regression analyses.
- Conditions
- Chronic Kidney Disease.
- Being tested
- Paracalcitol, placebo
- Keywords
- Vitamin D, Paracalcitol, Chronic kidney disease, Endothelial dysfunction, Flow mediated vasodilation
- 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.
ParacalcitolDrug
Also called Active form of Vitamin D.
Patients in the experimental arm received 2 micrograms Paricalcitol capsules daily, for 12 weeks. This dose was adjusted based on clinical laboratory parameters and the maximum dose was 2 micrograms daily.
placeboDrug
| Study group | Role | What they receive |
|---|---|---|
| Placebo | Placebo comparator | Placebo capsules daily for 12 weeks. Receives: Drug: placebo |
| Paracalcitol | Experimental | see "Intervention description" for details. Receives: Drug: Paracalcitol |
What is being measured
The primary outcome is the main question the study is designed to answer.
Endothelial function measurement
Endothelial-dependent and independent vasodilation was assessed by a Toshiba Nemia XG Echo-Doppler applying a 7.5 MHz transducer that was fixed by an adjustable stereotactic clamp to warrant image stability. After baseline recording (1 min) a standard sphygmomanometer was placed on the right forearm 2 cm below the elbow and the cuff was inflated to 250 mmHg for 5 min. Recordings were performed during the 4 min following cuff deflation to estimate endothelium-dependent FMD. In studies of endothelium-independent vasodilatation recording times were 1 min for the baseline assessment and 5 min for changes in arterial diameter brought about by GTN. An interval of at least 1h was set between the last FMD assessment and GTN administration. All scans were recorded, stored and analyzed off-line. FMD and GTN were computed as the maximal % increase in diameter over baseline by an automatic edge detection system.
Measured: 12 weeks from baseline
Secondary outcomes (1)
Endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS).
The investigators will analyze the relationship between endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS) (angiotensin II and plasma renin activity).
Measured: 12 weeks from baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Sep 2012 (estimated)
- Study startJun 2011
- Primary completionAug 2012
- Study completionAug 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for Chronic Kidney Disease.Studies of the same condition, open and under way.
- 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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Investigator, Outcomes assessor
- Enrolment
- 88 participants (actual)
Sponsor and investigators
- Lead sponsor
- Fondazione C.N.R./Regione Toscana "G. Monasterio", Pisa, Italy
- Sponsor type
- Other government
- Responsible party
- Principal investigator, Carmine Zoccali, Fondazione C.N.R./Regione Toscana "G. Monasterio", Pisa, Italy
- Investigators
- Giuseppe Curatola, MD, Study director, Nephrology, Dialysis and Transplantation Unit
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01680198
- Sponsor's protocol ID
- Oct2010PENNYStudy
- Acronym
- PENNY
- Status last verified
- Oct 2012
- First submitted
- 30 Aug 2012
- Last updated
- 2 Oct 2012
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Yilmaz MI, Sonmez A, Saglam M, Yaman H, Kilic S, Demirkaya E, Eyileten T, Caglar K, Oguz Y, Vural A, Yenicesu M, Zoccali C. FGF-23 and vascular dysfunction in patients with stage 3 and 4 chronic kidney disease. Kidney Int. 2010 Oct;78(7):679-85. doi: 10.1038/ki.2010.194. Epub 2010 Jul 7.
PubMed 20613714London GM, Guerin AP, Verbeke FH, Pannier B, Boutouyrie P, Marchais SJ, Metivier F. Mineral metabolism and arterial functions in end-stage renal disease: potential role of 25-hydroxyvitamin D deficiency. J Am Soc Nephrol. 2007 Feb;18(2):613-20. doi: 10.1681/ASN.2006060573. Epub 2007 Jan 3.
PubMed 17202417Yamamoto T, Kozawa O, Tanabe K, Akamatsu S, Matsuno H, Dohi S, Hirose H, Uematsu T. 1,25-dihydroxyvitamin D3 stimulates vascular endothelial growth factor release in aortic smooth muscle cells: role of p38 mitogen-activated protein kinase. Arch Biochem Biophys. 2002 Feb 1;398(1):1-6. doi: 10.1006/abbi.2001.2632.
PubMed 11811942Wakasugi M, Noguchi T, Inoue M, Kazama Y, Tawata M, Kanemaru Y, Onaya T. Vitamin D3 stimulates the production of prostacyclin by vascular smooth muscle cells. Prostaglandins. 1991 Aug;42(2):127-36. doi: 10.1016/0090-6980(91)90072-n.
PubMed 1775635Teng M, Wolf M, Ofsthun MN, Lazarus JM, Hernan MA, Camargo CA Jr, Thadhani R. Activated injectable vitamin D and hemodialysis survival: a historical cohort study. J Am Soc Nephrol. 2005 Apr;16(4):1115-25. doi: 10.1681/ASN.2004070573. Epub 2005 Feb 23.
PubMed 15728786Teng M, Wolf M, Lowrie E, Ofsthun N, Lazarus JM, Thadhani R. Survival of patients undergoing hemodialysis with paricalcitol or calcitriol therapy. N Engl J Med. 2003 Jul 31;349(5):446-56. doi: 10.1056/NEJMoa022536.
PubMed 12890843Ravani P, Malberti F, Tripepi G, Pecchini P, Cutrupi S, Pizzini P, Mallamaci F, Zoccali C. Vitamin D levels and patient outcome in chronic kidney disease. Kidney Int. 2009 Jan;75(1):88-95. doi: 10.1038/ki.2008.501. Epub 2008 Oct 8.
PubMed 18843258Testa A, Mallamaci F, Benedetto FA, Pisano A, Tripepi G, Malatino L, Thadhani R, Zoccali C. Vitamin D receptor (VDR) gene polymorphism is associated with left ventricular (LV) mass and predicts left ventricular hypertrophy (LVH) progression in end-stage renal disease (ESRD) patients. J Bone Miner Res. 2010 Feb;25(2):313-9. doi: 10.1359/jbmr.090717.
PubMed 20422622Ghiadoni L, Faita F, Salvetti M, Cordiano C, Biggi A, Puato M, Di Monaco A, De Siati L, Volpe M, Ambrosio G, Gemignani V, Muiesan ML, Taddei S, Lanza GA, Cosentino F. Assessment of flow-mediated dilation reproducibility: a nationwide multicenter study. J Hypertens. 2012 Jul;30(7):1399-405. doi: 10.1097/HJH.0b013e328353f222.
PubMed 22525207D'arrigo G, Pizzini P, Cutrupi S, Tripepi R, Tripepi G, Mallamaci F, Zoccali C. Vitamin D receptor activation raises soluble thrombomodulin levels in chronic kidney disease patients: a double blind, randomized trial. Nephrol Dial Transplant. 2019 May 1;34(5):819-824. doi: 10.1093/ndt/gfy085.
PubMed 29668990Torino C, Pizzini P, Cutrupi S, Tripepi R, Vilasi A, Tripepi G, Mallamaci F, Zoccali C. Effect of Vitamin D Receptor Activation on the AGE/RAGE System and Myeloperoxidase in Chronic Kidney Disease Patients. Oxid Med Cell Longev. 2017;2017:2801324. doi: 10.1155/2017/2801324. Epub 2017 Dec 6.
PubMed 29362665Spoto B, Pizzini P, Tripepi G, Mallamaci F, Zoccali C. Circulating adiponectin modifies the FGF23 response to vitamin D receptor activation: a post hoc analysis of a double-blind, randomized clinical trial. Nephrol Dial Transplant. 2018 Oct 1;33(10):1764-1769. doi: 10.1093/ndt/gfx344.
PubMed 29304245Zoccali C, Curatola G, Panuccio V, Tripepi R, Pizzini P, Versace M, Bolignano D, Cutrupi S, Politi R, Tripepi G, Ghiadoni L, Thadhani R, Mallamaci F. Paricalcitol and endothelial function in chronic kidney disease trial. Hypertension. 2014 Nov;64(5):1005-11. doi: 10.1161/HYPERTENSIONAHA.114.03748. Epub 2014 Aug 4.
PubMed 25259743
Study at a glance
From the registry record, last updated by the sponsor on 2 Oct 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Paricalcitol on Endothelial Function in Chronic Kidney Disease (CKD) Patients (the PENNY Study)
- ClinicalTrials.gov ID
- NCT01680198
- Acronym / sponsor ID
- PENNY / Oct2010PENNYStudy
- Conditions
- Chronic Kidney Disease.
- Keywords
- Vitamin D, Paracalcitol, Chronic kidney disease, Endothelial dysfunction, Flow mediated vasodilation
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 88 participants (actual)
- Lead sponsor
- Fondazione C.N.R./Regione Toscana "G. Monasterio", Pisa, ItalyOther government
- Study start
- Jun 2011
- Primary completion
- Aug 2012 (actual)
- Study completion
- Aug 2012 (actual)
- First posted
- 7 Sep 2012 (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.
The primary aim of this study was to test the hypothesis that Paricalcitol, an active form of vitamin D, improved endothelial function in stage 3-4 chronic kidney disease (CKD) patients. A secondary aim of this trial was to study the relationship between endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS) (angiotensin II and plasma renin activity).
Detailed description
Primary objective: Test the hypothesis that Paricalcitol, an active form of vitamin D improves endothelial function in stage 3-4 chronic kidney disease (CKD) patients.
Secondary analysis: Study the relationship between endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS) (angiotensin II and plasma renin activity).
Background:
Endothelial function is altered in patients with CKD. Factors responsible for disturbed endothelium-dependent vasodilatation in CKD include reduced bioactivity of the nitric oxide (NO) pathway with decreased endothelial NO synthase (NOS) activity or inhibition via accumulation of endogenous inhibitors. In patients with CKD and in those on dialysis serum 25(OH)D3 and 1,25(OH)2D3 levels are associated with FMD. Vitamin D receptors and 1 -hydroxylase activity are present in endothelial and vascular smooth muscle cells and 1,25(OH)2D3 stimulates vascular endothelial growth factor and prostacyclin production by vascular smooth muscle cells. These biological observations may have clinical implications because paricalcitol treatment predicts longer survival in ESRD patients and very recent data link vitamin D to progression to ESRD in patients with stage 3-5 CKD. Furthermore, a previous study by us has shown that the BMSI polymorphism of the vitamin D receptor gene is associated with LVH and LVH progression in ESRD patients.
Study population: Patients with stage 3-4 CKD of both sexes in the age range 18-80 years. Patients taking vitamin D supplements, with abnormal liver function tests, symptomatic cardiovascular disease, diabetes or cancer and those whose medications changed during the study were excluded.
Design and Methods: The study was a double-blind, randomized, parallel groups trial. After baseline measurements, patients with iPTH level > 65 pg/ml; Ca between 8.4- 10.00 mg/dL and P between 2.9-4.5 were randomized to receive 2 micrograms Paricalcitol capsules (or matching placebo) daily, for 12 weeks. This doses was adjusted based on clinical laboratory parameters and the maximum dose was 2 micrograms daily.
During the study if a subject experienced over suppression of serum iPTH (defined as a serum iPTH <15 pg/mL), or hypercalcemia (defined as Ca > 11.0 mg/dL), the subject continued to take study drug at reduced dosage 1 mcg any other day and returned in 2 weeks for an unscheduled visit. If the values from the unscheduled visit serum iPTH and/or Ca did not returned to > 15 pg/mL and/or <11.0 mg/dL, respectively, the drug was discontinued.
Flow mediated vasodilatation was measured according to a validated protocol developed at the coordinating center of a national (Italian)working group of vascular function testing.
Primary end-point: Change in Flow Mediated Dilatation (FMD) induced by Paricalcitol in comparison to Placebo.
Study power: To detect a 2% difference (standard deviation: ± 3.0%) in the change in FMD between Paracalcitol treated and untreated patients with a power of 80 %, a confidence level using a two-tailed test of 5% and a potential attrition rate of 15%, at least 44 patients per group were required (88 patients in total).
Statistical analysis: Data will be summarized as mean ± standard deviation (normally distributed data), median and inter-quartile range (non normally distributed data) or as percent frequency, and comparison between groups will be made by independent T-Test, Mann-Whitney Test, or Chi Square test, as appropriate. Within patients comparisons will be done by statistical tests for paired observations. Data analysis of the primary outcome will be performed by comparing the changes in FMD in Paracalcitol treated and untreated patients by using the T-Test for independent observations. Possible differences in risk factors at baseline not controlled by randomization (i.e. differences due to chance) will be accounted for by using multivariate regression analyses.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Placebo | Placebo comparator | Drug: placeboPlacebo capsules daily for 12 weeks. |
| Paracalcitol | Experimental | Drug: Paracalcitolsee "Intervention description" for details. |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patients with iPTH level > 65 pg/ml; Ca between 8.4- 10.00 mg/dL and P between 2.9-4.5
- Negative serum pregnancy test for female subjects of childbering potential.
- Informed consent.
Key exclusion criteria (3 listed)
- Use vitamin D supplements.
- Altered liver function tests (bilirubin, aminotransferases and total alkaline phosphatase > 3 times the upper limit of normal ranges).
- Sympthomatic cardiovascular disease on the basis of clinical history. Cancer.
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 |
|---|---|---|
| ParacalcitolAlso: Active form of Vitamin D.Patients in the experimental arm received 2 micrograms Paricalcitol capsules daily, for 12 weeks. This dose was adjusted based on clinical laboratory parameters and the maximum dose was 2 micrograms daily. | Drug | Paracalcitol |
| placebo | Drug | Placebo |
Primary outcome
Endothelial function measurement
Time frame: 12 weeks from baseline
Endothelial-dependent and independent vasodilation was assessed by a Toshiba Nemia XG Echo-Doppler applying a 7.5 MHz transducer that was fixed by an adjustable stereotactic clamp to warrant image stability. After baseline recording (1 min) a standard sphygmomanometer was placed on the right forearm 2 cm below the elbow and the cuff was inflated to 250 mmHg for 5 min. Recordings were performed during the 4 min following cuff deflation to estimate endothelium-dependent FMD. In studies of endothelium-independent vasodilatation recording times were 1 min for the baseline assessment and 5 min for changes in arterial diameter brought about by GTN. An interval of at least 1h was set between the last FMD assessment and GTN administration. All scans were recorded, stored and analyzed off-line. FMD and GTN were computed as the maximal % increase in diameter over baseline by an automatic edge detection system.
1 secondary outcome
Endothelial function and plasma/serum and genetic biomarkers of bone mineral disorders in CKD (BMD-CKD) and renin angiotensin-aldosteron system (RAS).
Time frame: 12 weeks from baseline
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 2 Oct 2012.
- Background: PubMed 20613714Yilmaz MI, Sonmez A, Saglam M, Yaman H, Kilic S, Demirkaya E, Eyileten T, Caglar K, Oguz Y, Vural A, Yenicesu M, Zoccali C. FGF-23 and vascular dysfunction in patients with stage 3 and 4 chronic kidney disease. Kidney Int. 2010 Oct;78(7):679-85. doi: 10.1038/ki.2010.194. Epub 2010 Jul 7.
- Background: PubMed 17202417London GM, Guerin AP, Verbeke FH, Pannier B, Boutouyrie P, Marchais SJ, Metivier F. Mineral metabolism and arterial functions in end-stage renal disease: potential role of 25-hydroxyvitamin D deficiency. J Am Soc Nephrol. 2007 Feb;18(2):613-20. doi: 10.1681/ASN.2006060573. Epub 2007 Jan 3.
- Background: PubMed 11811942Yamamoto T, Kozawa O, Tanabe K, Akamatsu S, Matsuno H, Dohi S, Hirose H, Uematsu T. 1,25-dihydroxyvitamin D3 stimulates vascular endothelial growth factor release in aortic smooth muscle cells: role of p38 mitogen-activated protein kinase. Arch Biochem Biophys. 2002 Feb 1;398(1):1-6. doi: 10.1006/abbi.2001.2632.
- Background: PubMed 1775635Wakasugi M, Noguchi T, Inoue M, Kazama Y, Tawata M, Kanemaru Y, Onaya T. Vitamin D3 stimulates the production of prostacyclin by vascular smooth muscle cells. Prostaglandins. 1991 Aug;42(2):127-36. doi: 10.1016/0090-6980(91)90072-n.
- Background: PubMed 15728786Teng M, Wolf M, Ofsthun MN, Lazarus JM, Hernan MA, Camargo CA Jr, Thadhani R. Activated injectable vitamin D and hemodialysis survival: a historical cohort study. J Am Soc Nephrol. 2005 Apr;16(4):1115-25. doi: 10.1681/ASN.2004070573. Epub 2005 Feb 23.
- Background: PubMed 12890843Teng M, Wolf M, Lowrie E, Ofsthun N, Lazarus JM, Thadhani R. Survival of patients undergoing hemodialysis with paricalcitol or calcitriol therapy. N Engl J Med. 2003 Jul 31;349(5):446-56. doi: 10.1056/NEJMoa022536.
- Background: PubMed 18843258Ravani P, Malberti F, Tripepi G, Pecchini P, Cutrupi S, Pizzini P, Mallamaci F, Zoccali C. Vitamin D levels and patient outcome in chronic kidney disease. Kidney Int. 2009 Jan;75(1):88-95. doi: 10.1038/ki.2008.501. Epub 2008 Oct 8.
- Background: PubMed 20422622Testa A, Mallamaci F, Benedetto FA, Pisano A, Tripepi G, Malatino L, Thadhani R, Zoccali C. Vitamin D receptor (VDR) gene polymorphism is associated with left ventricular (LV) mass and predicts left ventricular hypertrophy (LVH) progression in end-stage renal disease (ESRD) patients. J Bone Miner Res. 2010 Feb;25(2):313-9. doi: 10.1359/jbmr.090717.
- Background: PubMed 22525207Ghiadoni L, Faita F, Salvetti M, Cordiano C, Biggi A, Puato M, Di Monaco A, De Siati L, Volpe M, Ambrosio G, Gemignani V, Muiesan ML, Taddei S, Lanza GA, Cosentino F. Assessment of flow-mediated dilation reproducibility: a nationwide multicenter study. J Hypertens. 2012 Jul;30(7):1399-405. doi: 10.1097/HJH.0b013e328353f222.
- Derived from this study: PubMed 29668990D'arrigo G, Pizzini P, Cutrupi S, Tripepi R, Tripepi G, Mallamaci F, Zoccali C. Vitamin D receptor activation raises soluble thrombomodulin levels in chronic kidney disease patients: a double blind, randomized trial. Nephrol Dial Transplant. 2019 May 1;34(5):819-824. doi: 10.1093/ndt/gfy085.
- Derived from this study: PubMed 29362665Torino C, Pizzini P, Cutrupi S, Tripepi R, Vilasi A, Tripepi G, Mallamaci F, Zoccali C. Effect of Vitamin D Receptor Activation on the AGE/RAGE System and Myeloperoxidase in Chronic Kidney Disease Patients. Oxid Med Cell Longev. 2017;2017:2801324. doi: 10.1155/2017/2801324. Epub 2017 Dec 6.
- Derived from this study: PubMed 29304245Spoto B, Pizzini P, Tripepi G, Mallamaci F, Zoccali C. Circulating adiponectin modifies the FGF23 response to vitamin D receptor activation: a post hoc analysis of a double-blind, randomized clinical trial. Nephrol Dial Transplant. 2018 Oct 1;33(10):1764-1769. doi: 10.1093/ndt/gfx344.
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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.
Giuseppe Curatola, MD study director
Nephrology, Dialysis and Transplantation Unit
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Paracalcitol in people with Chronic Kidney Disease., run by Fondazione C.N.R./Regione Toscana "G. Monasterio", Pisa, Italy at 1 site in Italy.
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 3 inclusion and 3 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 2 Oct 2012. 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 Italy. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
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?
Endothelial function measurement (time frame: 12 weeks from baseline). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01680198, which also lists 13 linked publications.
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 2 Oct 2012.