Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Jun 26, 2026, 9:49 PM EDT

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Showing 1–24 of 291 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pilot Study: The Effect of Ergocalciferol on Plasma Mucin-1 Levels

NCT03747523
Conditions
Ergocalciferol
Interventions
Ergocalciferol
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Completed Phase 3 Interventional Results available

Phase 3 Study of SNF472 for Calciphylaxis

NCT04195906
Conditions
Calciphylaxis, Calcific Uremic Arteriolopathy
Interventions
Experimental: SNF472, Placebo Comparator: Placebo, Experimatenl SNF472 (Open-label)
Drug
Lead sponsor
Sanifit Therapeutics S. A.
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
38
States / cities
Phoenix, Arizona • El Centro, California • Escondido, California + 34 more
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
Hematological Malignancies
Interventions
Ibandronate, Vitamin Supplements
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
1
States / cities
Houston, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Potassium Citrate to Prevent Age Related Bone Loss

NCT00282126
Conditions
Osteoporosis
Interventions
Potassium citrate
Dietary Supplement
Lead sponsor
University of California, San Francisco
Other
Eligibility
55 Years to 90 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Osteoporosis
Interventions
SB-751689 oral tablets (400 mg)
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years to 65 Years · Female only
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2007
U.S. locations
1
States / cities
Port Orange, Florida
Conditions
Scleroderma, Calcinosis
Interventions
Not listed
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 85 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2024
U.S. locations
1
States / cities
New Brunswick, New Jersey
Completed No phase listed Observational Accepts healthy volunteers Results available

Early-onset Obesity and Cognitive Impairment in Children With Pseudohypoparathyroidism

NCT02411461
Conditions
Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Years to 18 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Pseudohypoparathyroidism and Pseudopseudohypoparathyroidism, Pseudohypoparathyroidism Type Ia, Albright Hereditary Osteodystrophy
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Years to 50 Years
Enrollment
14 participants
Timeline
2019 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
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
Hypoparathyroidism
Interventions
open-label PTH(1-84)
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 85 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2017
U.S. locations
1
States / cities
New York, New York
Active, not recruiting No phase listed Observational

ADH1 and ADH2 Disease Monitoring Study (DMS)

NCT05227287
Conditions
Autosomal Dominant Hypocalcemia
Interventions
Not listed
Lead sponsor
Calcilytix Therapeutics, Inc., a BridgeBio company
Industry
Eligibility
Up to 90 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
9
States / cities
Oakland, California • Aurora, Colorado • Jacksonville, Florida + 6 more
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Sodium Intake on Calcium Retention in Girls

NCT01564238
Conditions
Osteoporosis
Interventions
Low Na diet (1.3 g/d), High sodium diet (3.8 g/d)
Other
Lead sponsor
Purdue University
Other
Eligibility
11 Years to 15 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2000
U.S. locations
1
States / cities
West Lafayette, Indiana
Conditions
Parathyroid Cancer, Primary Hyperparathyroidism, Pseudohypoparathyroidism, Inheritable Bone Diseases, Multiple Endocrine Neoplasia, Type 1
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Months to 100 Years
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2031
U.S. locations
1
States / cities
Bethesda, Maryland
Conditions
Hypocalcemia
Interventions
paricalcitol injection (Zemplar), Effects on calcium regulation, Administration of elemental Ca during hypocalcemic ICU pts.
Drug · Behavioral
Lead sponsor
Abbott
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
9
States / cities
Merced, California • Denver, Colorado • Hudson, Florida + 6 more
Completed Phase 4 Interventional Results available

Vitamin D and Coronary Calcification Study

NCT00752102
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
Arterial Calcification, CD73 Deficiency
Interventions
Etidronate, MRI Scan
Drug · Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Does Omeprazole Decrease Intestinal Calcium Absorption?

NCT00582972
Conditions
Osteoporosis, Achlorhydria, GERD, Hip Fracture
Interventions
Omeprazole
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Completed Phase 4 Interventional Accepts healthy volunteers

How Does Magnesium Status Influence Calcium Homeostasis?

NCT01593501
Conditions
Magnesium Deficiency, Calcium Metabolism Disorders
Interventions
vitamin D3
Dietary Supplement
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
30 Years to 75 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Conditions
Autosomal Dominant Hypocalcemia (ADH)
Interventions
NPSP795
Drug
Lead sponsor
Shire
Industry
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Conditions
Parathyroid Diseases, Parathyroid Dysfunction, Parathyroid Neoplasms, Parathyroid Adenoma, Hypercalcemia, Neoplasms, Glandular and Epithelial, Endocrine Gland Neoplasms, Adenoma, Hyperparathyroidism, Hyperparathyroidism, Primary
Interventions
Parathyroid Eye (PTeye)
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
San Francisco, California
Conditions
Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy, Pseudohypoparathyroidism Type 1a
Interventions
Theophylline, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
2 Years to 12 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Dietary Protein Source on Calcium Metabolism

NCT00187538
Conditions
Calcium Metabolism
Interventions
Dietary
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
55 Years and older · Female only
Enrollment
183 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
Cardiovascular Diseases, Cardiovascular Abnormalities, Calcifications, Vascular, Endstage Renal Disease, ESRD, Coronary Artery Calcification
Interventions
SNF472, Placebo
Drug
Lead sponsor
Sanifit Therapeutics S. A.
Other
Eligibility
18 Years to 80 Years
Enrollment
274 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
46
States / cities
Bakersfield, California • Chula Vista, California • Escondido, California + 42 more