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Showing 49–72 of 375 matching trials from the live ClinicalTrials.gov search.
Conditions
Hyperphosphatemia
Interventions
Niacinamide, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
17 participants
Timeline
2006 – 2007
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Vitamin D Deficiency, Burns
Interventions
Ergocalciferol Capsules
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Genetic, Dietary and Environmental Influences on Vitamin D Metabolism

NCT02590614
Conditions
Vitamin D Deficiency
Interventions
800 IU Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 35 Years
Enrollment
412 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
University Park, Pennsylvania
Conditions
X-linked Hypophosphatemia
Interventions
burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Conditions
Congestive Heart Failure, Hypovitaminosis D, Hyperparathyroidism
Interventions
Not listed
Lead sponsor
State University of New York - Downstate Medical Center
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Brooklyn, New York
Conditions
Osteoporosis, Renal Osteodystrophy, Kidney Transplant; Complications
Interventions
Denosumab Inj 60 mg/ml, Placebo
Drug · Other
Lead sponsor
Thomas Nickolas, MD MS
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Chicago, Illinois • Evanston, Illinois • New York, New York
Conditions
Vitamin D Deficiency, Insulin Resistance, Insulin Sensitivity, Obesity
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
13 Years to 18 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Birmingham, Alabama
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Sulfates in Breastmilk

NCT06203041
Conditions
Vitamin D Deficiency, Breast Milk Collection
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
1 Month to 60 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a B12 Vitamin to Increase Energy and Focus

NCT05517005
Conditions
B12 Deficiency Vitamin, Energy Supply; Deficiency, Mood
Interventions
Hype Bites Supplement
Dietary Supplement
Lead sponsor
Sourse
Industry
Eligibility
24 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Completed Not applicable Interventional Accepts healthy volunteers Results available

Personalized Vitamin D Supplementation in European and African Americans

NCT02362269
Conditions
Vitamin D Deficiency
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Female only
Enrollment
169 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Terminated Phase 4 Interventional Accepts healthy volunteers

Efficacy Of Ergocalciferol In Adults According To BMI

NCT02435771
Conditions
Obesity, Vitamin D Deficiency
Interventions
Ergocalciferols
Drug
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
1
States / cities
Bethesda, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

Cobalamin Absorption From Fortified Food

NCT01399164
Conditions
Vitamin B-12 Deficiency, Achlorhydria
Interventions
14C-B12 fortified bread
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
60 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Davis, California
Completed Not applicable Interventional Results available

Calcitonin for Treating X-linked Hypophosphatemia

NCT01652573
Conditions
Hypophosphatemic Rickets, X Linked Dominant
Interventions
nasal salmon calcitonin, Saline Nasal Spray Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
New Haven, Connecticut
Conditions
Cystic Fibrosis
Interventions
Vitamin D Powder, Vitamin D Oil
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 59 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Atlanta, Georgia
Conditions
Multiple Myeloma
Interventions
Lenalidomide, Maintenance Vitamin D, No maintenance Vitamin D
Drug
Lead sponsor
Amany Keruakous, MD, MS.
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Augusta, Georgia
Conditions
Hypophosphatasia (HPP)
Interventions
Asfotase Alfa
Biological
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
St Louis, Missouri • Durham, North Carolina
Conditions
Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
Interventions
Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
6 Years to 10 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Vitamin B12 Deficiency
Interventions
Vitamin B12
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 90 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Staten Island, New York
Completed Phase 2 Interventional Results available

The Effect of Etelcalcetide on CKD-MBD

NCT03960437
Conditions
Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Vascular Calcification, Hyperparathyroidism; Secondary, Renal
Interventions
Etelcalcetide
Drug
Lead sponsor
Thomas Nickolas, MD MS
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New York, New York
Conditions
Hypophosphatemia, X-linked Hypophosphatemia, Renin-angiotensin System, Left Ventricular Hypertrophy
Interventions
Ang II and Ang-(1-7), FGF23 and klotho
Diagnostic Test
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
2 Years to 24 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Conditions
Hypophosphatemia, Hypophosphatemic Rickets, Pain, Chronic
Interventions
Burosumab
Biological
Lead sponsor
Redwood Dermatology Sciences
Other
Eligibility
Up to 18 Years · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Clinton, Utah
Conditions
Chronic Kidney Disease, End Stage Renal Disease, Vitamin D Deficiency
Interventions
cholecalciferol
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
19 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Omaha, Nebraska
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Supplementation in Warfighters

NCT02954549
Conditions
Vitamin D Deficiency Disease
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Madigan Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Tacoma, Washington
Conditions
Type 2 Diabetes, Vitamin B12 Deficiency, Neuropathy, Anemia
Interventions
Office visit intervention, Electronic Message Intervention
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
489 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Columbus, Ohio