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Showing 1–24 of 92 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: calcitriol Clear all
Completed Phase 4 Interventional

Study to Evaluate the Effects of Zemplar Injection and Calcijex on Intestinal Absorption of Calcium

NCT00073710
View directory record Official record
Conditions
Secondary Hyperparathyroidism, Chronic Kidney Disease
Interventions
Zemplar, 42 Ca carbonate absorption via single tracer method, Calcijex
Drug · Procedure
Lead sponsor
Abbott
Industry
Eligibility
20 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 1, 2006 · Synced Sep 2, 2026, 5:01 AM EDT
Not listed Phase 2 Interventional

Study of DN-101 (Calcitriol) and Docetaxel in Subjects Previously Enrolled in Studies DN101-002 or DN101-004

NCT00285675
View directory record Official record
Conditions
Androgen Independent Prostate Cancer (AIPC), Non Small Cell Lung Cancer (NSCLC)
Interventions
DN-101 (calcitriol) - Drug
Drug
Lead sponsor
Novacea
Industry
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
11
States / cities
Berkeley, California • San Francisco, California • Vallejo, California + 6 more
Source: ClinicalTrials.gov public record
Updated May 30, 2006 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 1 Interventional

Calcitriol Plus Paclitaxel in Treating Patients With Advanced Solid Tumors

NCT00009802
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
calcitriol, paclitaxel
Dietary Supplement · Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2005
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2013 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 3 Interventional Results available

Vitamin D and Arterial Function in Patients With Chronic Kidney Disease

NCT01384539
View directory record Official record
Conditions
Arterial Dysfunction, Chronic Kidney Disease
Interventions
Cholecalciferol, Calcitriol
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 80 Years
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Pharmacokinetics of Rocaltrol When Administered Alone or in Combination With Fosrenol or Renvela in Healthy Volunteers

NCT00925704
View directory record Official record
Conditions
Healthy
Interventions
Calcitriol, Lanthanum carbonate + Calcitriol, Sevelamer carbonate + Calcitriol
Drug
Lead sponsor
Shire
Industry
Eligibility
19 Years to 45 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Cypress, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2021 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 4 Interventional Results available

Long Term Safety and Efficacy Study of Calcitriol 3 mcg/g Ointment in Pediatric Subjects With Plaque Psoriasis

NCT02125279
View directory record Official record
Conditions
Psoriasis Vulgaris
Interventions
Calcitriol
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
2 Years to 16 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
8
States / cities
Fort Smith, Arkansas • Rogers, Arkansas • Burbank, California + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Sep 2, 2026, 5:01 AM EDT
Terminated Phase 3 Interventional

Chemoprevention of Colorectal Adenomas

NCT00486512
View directory record Official record
Conditions
Adenomatous Polyps
Interventions
0.5 mg calcitriol (1a -25-dihydroxycholecalciferol), 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3), placebo to 0.5 mg calcitriol (1a -25-dihydroxycholecalciferol), placebo to 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3), Colonoscopy
Drug · Procedure
Lead sponsor
Colotech A/S
Industry
Eligibility
40 Years to 75 Years
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
24
States / cities
Huntsville, Alabama • San Diego, California • Clearwater, Florida + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Study to Evaluate Vectical in Combination With Clobex Spray to Treatment Plaque Psoriasis

NCT01205880
View directory record Official record
Conditions
Psoriasis
Interventions
Calcitriol ointment, Clobetasol spray
Drug
Lead sponsor
Emer, Jason, M.D.
Individual
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 20, 2010 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 1 Interventional Results available

A Study to Evaluate and Compare the Efficacy and Pharmacokinetics of MK-0873 for the Treatment of Plaque Psoriasis (MK-0873-022)

NCT01235728
View directory record Official record
Conditions
Psoriasis, Plaque Psoriasis
Interventions
MK-0873 2% Cream, MK-0873 vehicle (placebo) Cream, Calcitriol Cream
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Fort Myers, Florida • Miramar, Florida
Source: ClinicalTrials.gov public record
Updated Feb 7, 2019 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 3 Interventional

Osteoporosis Prevention After Heart Transplant

NCT00000412
View directory record Official record
Conditions
Osteoporosis, Cardiac Transplantation
Interventions
Alendronate, Calcitriol, Placebo Alendronate, Placebo Calcitriol
Drug
Lead sponsor
Columbia University
Other
Eligibility
20 Years to 70 Years
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2002
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 6, 2015 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 2 Interventional

Phase II Randomized Study of the Effects of Growth Hormone on Children and Adolescents on Maintenance Dialysis

NCT00004340
View directory record Official record
Conditions
Renal Osteodystrophy, End Stage Renal Disease
Interventions
calcitriol, growth hormone
Drug
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
1 Year to 18 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1995
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 2, 2026, 5:01 AM EDT
Terminated No phase listed Observational Results available

Study to Evaluate Safety of Vitamin D Receptor Activators in Patients Ages 0 to 16 With Chronic Kidney Disease Stage 5 Receiving Peritoneal Dialysis Within Current Clinical Practice

NCT01134315
View directory record Official record
Conditions
Secondary Hyperparathyroidism, End-Stage Renal Disease
Interventions
Paricalcitol, Calcitriol
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
Up to 16 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
18
States / cities
Birmingham, Alabama • Gainesville, Florida • Orlando, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 12, 2013 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 2 Interventional Results available

A Study of Calcitriol BID Topical Treatment in Adolescents With Plaque Psoriasis

NCT00419666
View directory record Official record
Conditions
Chronic Plaque Psoriasis
Interventions
Calcitriol 3mcg/g
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
12 Years to 17 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
5
States / cities
Little Rock, Arkansas • San Diego, California • Eagan, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Sep 2, 2026, 5:01 AM EDT
Active, not recruiting Phase 3 Interventional

The ENERGY 3 Study: Evaluation of Efficacy and Safety of INZ-701 in Children With ENPP1 Deficiency

NCT06046820
View directory record Official record
Conditions
Ectonucleotide Pyrophosphatase/Phosphodiesterase1 Deficiency, Autosomal Recessive Hypophosphatemic Rickets, Generalized Arterial Calcification of Infancy
Interventions
INZ-701, Control Arm (Conventional Therapy)
Drug
Lead sponsor
Inozyme Pharma
Industry
Eligibility
1 Year to 12 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
6
States / cities
Aurora, Colorado • Chicago, Illinois • Boston, Massachusetts + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2025 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 4 Interventional Results available

Evaluate Safety/Efficacy of Two Treatment Regimens for Vectical™ Ointment & Clobex® Spray for Moderate Plaque Psoriasis

NCT00988637
View directory record Official record
Conditions
Plaque Psoriasis
Interventions
Vectical™ Ointment weekdays and Clobex® Spray weekends regimen, Clobex® Spray morning and Vectical™ Ointment evening regimen
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years to 80 Years
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
5
States / cities
Los Angeles, California • San Diego, California • Evansville, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2022 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 2 Interventional

Calcitriol, Mitoxantrone, and Prednisone in Treating Patients With Metastatic Prostate Cancer

NCT00182741
View directory record Official record
Conditions
Prostate Cancer
Interventions
calcitriol, mitoxantrone hydrochloride, prednisone
Dietary Supplement · Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years to 100 Years · Male only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 2 Interventional Results available

Randomized Controlled Trial of Calcitriol vs. Placebo Among Critically-ill Patients With Sepsis

NCT01689441
View directory record Official record
Conditions
Severe Sepsis or Septic Shock
Interventions
Calcitriol, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Early Phase 1 Interventional Results available

Calcitriol Monotherapy for X-Linked Hypophosphatemia

NCT03748966
View directory record Official record
Conditions
X-linked Hypophosphatemia, Hypophosphatemic Rickets, Hypophosphatemic Rickets, X-Linked Dominant
Interventions
Calcitriol
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
3 Years to 70 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 1 Interventional

Calcitriol Plus Dexamethasone in Treating Patients With Prostate Cancer That Has Not Responded to Hormone Therapy

NCT00010231
View directory record Official record
Conditions
Prostate Cancer
Interventions
calcitriol, dexamethasone
Dietary Supplement · Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2002
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 29, 2015 · Synced Sep 2, 2026, 5:01 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Calcitriol in Combination With Ketoconazole and Therapeutic Hydrocortisone in Treating Patients With Prostate Cancer

NCT00536991
View directory record Official record
Conditions
Prostate Adenocarcinoma, Recurrent Prostate Carcinoma, Stage III Prostate Cancer, Stage IV Prostate Cancer
Interventions
Calcitriol, Ketoconazole, Laboratory Biomarker Analysis, Pharmacological Study, Therapeutic Hydrocortisone
Dietary Supplement · Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 2, 2026, 5:01 AM EDT
Terminated Phase 2 Interventional Results available

Calcitriol and Dexamethasone in Treating Patients With Prostate Cancer That Did Not Respond to Hormone Therapy

NCT00524589
View directory record Official record
Conditions
Prostate Cancer
Interventions
calcitriol, dexamethasone, protein expression analysis, laboratory biomarker analysis
Dietary Supplement · Drug · Genetic + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
Up to 120 Years · Male only
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Nov 19, 2017 · Synced Sep 2, 2026, 5:01 AM EDT
Terminated Phase 3 Interventional Results available

Pediatric Chronic Kidney Disease Safety and Efficacy

NCT01277510
View directory record Official record
Conditions
Chronic Kidney Disease, Hyperparathyroidism, Hyperparathyroidism, Secondary, Kidney Disease, Secondary Hyperparathyroidism
Interventions
cinacalcet capsule, placebo, Standard of Care
Drug
Lead sponsor
Amgen
Industry
Eligibility
6 Years to 17 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
18
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2020 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparative Effectiveness of Vitamin D and Repletion Strategies

NCT01524874
View directory record Official record
Conditions
Hypovitaminosis D, Insulin Resistance, Diabetes
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Bastyr University
Other
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Kailua-Kona, Hawaii • Kenmore, Washington
Source: ClinicalTrials.gov public record
Updated Feb 1, 2012 · Synced Sep 2, 2026, 5:01 AM EDT
Completed Phase 3 Interventional Results available

Safety & Effectiveness of Clobex Spray, Followed by Calcitriol Ointment in Management of Plaque Psoriasis

NCT00658788
View directory record Official record
Conditions
Psoriasis
Interventions
clobetasol propionate spray 0.05%, calcitriol ointment
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years to 80 Years
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
12
States / cities
San Diego, California • Newnan, Georgia • Snellville, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Sep 2, 2026, 5:01 AM EDT