- Conditions
- Opioid Use Disorder
- Interventions
- [11C]-PHNO, Calcitriol, Placebo Control, PET Scan
- Drug · Dietary Supplement · Other + 1 more
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 5 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2025
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
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Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.
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Showing 1–14
of 14
matching trials from the live ClinicalTrials.gov search.
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- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency, Coronary Calcification, Disorders of Calcium and Bone Metabolism
- Interventions
- Calcitriol (Rocaltrol®), Paricalcitol
- Drug
- Lead sponsor
- Joslin Diabetes Center
- Other
- Eligibility
- 25 Years and older
- Enrollment
- 44 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2013
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency
- Interventions
- Ergocalciferol, Calcitriol
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 80 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2014
- U.S. locations
- 1
- States / cities
- Cambridge, Massachusetts
- Conditions
- Secondary Hyperparathyroidism-Chronic Kidney Disease
- Interventions
- Doxercalciferol (GZ427397), Calcitriol
- Drug
- Lead sponsor
- Sanofi
- Industry
- Eligibility
- 5 Years to 18 Years
- Enrollment
- 21 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2025
- U.S. locations
- 21
- States / cities
- Birmingham, Alabama • Los Angeles, California • Sacramento, California + 17 more
- Conditions
- Cocaine Use Disorder
- Interventions
- Calcitriol, Placebo
- Drug · Other
- Lead sponsor
- Yale University
- Other
- Eligibility
- 30 Years to 55 Years
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2020
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Chronic Kidney Disease, Anemia of Chronic Disease
- Interventions
- Oral Calcitriol 0.5 mcg once daily for 6 weeks, Placebo
- Drug
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- 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
- 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
- Conditions
- Pre-Diabetic
- Interventions
- Calcitriol capsules, Oral Placebo
- Drug
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 20 Years to 45 Years
- Enrollment
- 17 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2021
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- 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
- Conditions
- ADHD
- Interventions
- Magnetic Resonance Imaging (MRI), PHNO, calcitriol, Placebo oral capsule, high-resolution research tomography, Dextro Amphetamine
- Procedure · Drug · Dietary Supplement
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2023
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Metastatic Melanoma
- Interventions
- Calcitriol, Temozolomide
- Dietary Supplement · Drug
- Lead sponsor
- Northwestern University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2012
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- 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
- 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