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Showing 1–24 of 121 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Disorders of Calcium and Bone Metabolism Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Estimate the Effect of Formulation on the Relative Absorption of SB-751689 Administered to Healthy Women

NCT00540878
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 17, 2009 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Results available

The Effect of Etelcalcetide on CKD-MBD

NCT03960437
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 3 Interventional Results available

Double-blind Extension of HORIZON Pivotal Fracture Trial (Zoledronic Acid in the Treatment of Postmenopausal Osteoporosis)

NCT00145327
View directory record Official record
Conditions
Osteoporosis
Interventions
Zoledronic Acid, Placebo
Drug
Lead sponsor
Novartis
Industry
Eligibility
68 Years to 90 Years · Female only
Enrollment
2,456 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
30
States / cities
Tucson, Arizona • Little Rock, Arkansas • Beverly Hills, California + 26 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2011 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Etelcalcetide (AMG 416) in the Treatment of Secondary Hyperparathyroidism (SHPT) in Patients With Chronic Kidney Disease (CKD) on Hemodialysis

NCT01788046
View directory record Official record
Conditions
Hyperparathyroidism, Secondary
Interventions
Etelcalcetide, Placebo
Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 100 Years
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
45
States / cities
Mobile, Alabama • Azusa, California • Beverly Hills, California + 42 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Calcium Supplement Particle Size and Vitamin D Supplement on Calcium Retention in Adolescent Girls

NCT01005381
View directory record Official record
Conditions
Osteoporosis
Interventions
Small Particle Size Calcium Carbonate Supplement, Large Particle Size Calcium Carbonate Supplement, Vitamin D, Calcium Placebo
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
12 Years to 14 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2018 · Synced Jun 10, 2026, 1:26 AM EDT
Recruiting Phase 4 Interventional

Effect of Theophylline in Pseudohypoparathyroidism

NCT03718403
View directory record Official record
Conditions
PHP Ia, PHP IB, Php1C
Interventions
Theophylline
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
5 Years to 21 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2032
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2022 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Potassium Bicarbonate Supplementation on Bone and Muscle in Older Adults

NCT00357214
View directory record Official record
Conditions
Osteoporosis, Sarcopenia
Interventions
Potassium Bicarbonate, Sodium Bicarbonate, Potassium Chloride, placebo (microcrystalline cellulose)
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 16, 2020 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Soluble Corn Fiber and Calcium Utilization in Adolescents

NCT01571440
View directory record Official record
Conditions
Osteoporosis
Interventions
No soluble corn fiber, 12 g soluble corn fiber
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
12 Years to 15 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 9, 2014 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)

NCT00744042
View directory record Official record
Conditions
Hypophosphatasia (HPP)
Interventions
asfotase alfa
Biological
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
Up to 36 Months
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
6
States / cities
Little Rock, Arkansas • Wilmington, Delaware • Springfield, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2019 · Synced Jun 10, 2026, 1:26 AM EDT
Completed No phase listed Observational Results available

Effects of Gastric Bypass Surgery and Calcium Metabolism and the Skeleton

NCT01330914
View directory record Official record
Conditions
Obesity, Morbid, Gastric Bypass
Interventions
Not listed
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
25 Years to 70 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 14, 2019 · Synced Jun 10, 2026, 1:26 AM EDT
Completed No phase listed Observational Results available

A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)

NCT01419028
View directory record Official record
Conditions
Hypophosphatasia (HPP)
Interventions
Not listed
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
Not listed
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
5
States / cities
Los Angeles, California • Indianapolis, Indiana • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2019 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate Oral Salmon Calcitonin in the Treatment of Osteoporosis in Postmenopausal Women Taking Calcium and Vitamin D

NCT00525798
View directory record Official record
Conditions
Osteoporosis
Interventions
SMC021 Oral calcitonin, SMC021 Placebo
Drug
Lead sponsor
Nordic Bioscience A/S
Industry
Eligibility
55 Years to 85 Years · Female only
Enrollment
4,665 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
Gainesville, Georgia • Detroit, Michigan • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 28, 2012 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

Open Label Trial Assessing Safety and Efficacy of Burosumab (KRN23), in a Patient With ENS and Hypophosphatemic Rickets

NCT03581591
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Effect of Calcium and Vitamin D on Bone Loss From the Hip

NCT00357643
View directory record Official record
Conditions
Osteoporosis
Interventions
Calcium 500 mg/day and vitamin D 700 IU/day
Drug
Lead sponsor
Tufts University
Other
Eligibility
65 Years and older
Enrollment
450 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 1996
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2006 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Calcium and Bone Mass in Young Females

NCT00000402
View directory record Official record
Conditions
Osteoporosis
Interventions
Calcium
Drug
Lead sponsor
Ohio State University
Other
Eligibility
8 Years to 13 Years · Female only
Enrollment
354 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1991 – 2001
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 21, 2013 · Synced Jun 10, 2026, 1:26 AM EDT
Recruiting Phase 1Phase 2 Interventional

A First-in-human Study of KK8123 in Adults With X-linked Hypophosphatemia

NCT06525636
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
KK8123
Drug
Lead sponsor
Kyowa Kirin Co., Ltd.
Industry
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Results available

Bone Mass and Strength After Kidney Transplantation

NCT02224144
View directory record Official record
Conditions
End Stage Renal Disease, Kidney Transplantation, Bone Loss, Fractures, Vascular Calcifications
Interventions
Vitamin D3, Calcitriol, Placebo
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 1 Interventional

Effect of CTAP101 Capsules on Ca/iPTH in Advanced Breast/Prostate Cancer Patients Treated With Denosumab/Zoledronic Acid

NCT02274623
View directory record Official record
Conditions
Breast Cancer, Prostate Cancer, Bone Neoplasms, Hypocalcemia, Hyperparathyroidism, Secondary
Interventions
CTAP101 Capsules
Drug
Lead sponsor
OPKO Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
6
States / cities
Long Beach, California • Miami, Florida • Evergreen Park, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Jun 10, 2026, 1:26 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Calcimimetics in Hypophosphatemic Rickets

NCT00844740
View directory record Official record
Conditions
Familial Hypophosphatemic Rickets
Interventions
Cinacalcet
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
5 Years to 21 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 16, 2020 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Encouraging Calcium Absorption and Bone Formation During Early Puberty

NCT00022867
View directory record Official record
Conditions
Osteoporosis, Osteopenia
Interventions
Nondigestible oligosaccharide (NDO)
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
9 Years to 12 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2006
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2015 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Results available

Long-Term Extension Study of KRN23 in Adult Subjects With X-Linked Hypophosphatemia (XLH)

NCT02312687
View directory record Official record
Conditions
X-Linked Hypophosphatemia
Interventions
KRN23
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
Not listed
Enrollment
20 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
Source: ClinicalTrials.gov public record
Updated May 5, 2024 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Results available

Study of the Safety, Pharmacodynamics (PD) and Efficacy of KRN23 in Children From 1 to 4 Years Old With X-linked Hypophosphatemia (XLH)

NCT02750618
View directory record Official record
Conditions
X-Linked Hypophosphatemia
Interventions
Burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
1 Year to 4 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
3
States / cities
New Haven, Connecticut • Indianapolis, Indiana • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 5, 2024 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Understanding Effects of Calcium on the Gut-Bone Axis

NCT06383117
View directory record Official record
Conditions
Healthy, Adult, Calcium, Bone Resorption, Endocrine; Obesity
Interventions
Calcium carbonate, Placebo Control
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Jun 10, 2026, 1:26 AM EDT
Completed Not applicable Interventional Results available

Calcium Absorption in Patients With Rothmund-Thomson Syndrome

NCT01304407
View directory record Official record
Conditions
Rothmund-Thomson Syndrome
Interventions
Calcium stable isotope
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
4 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Jun 10, 2026, 1:26 AM EDT