- Conditions
- Secondary Hyperparathyroidism
- Interventions
- Teriparatide
- Drug
- Lead sponsor
- University of Maryland, Baltimore
- Other
- Eligibility
- 40 Years to 59 Years · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2008
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
Search Results
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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 1–24
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- Conditions
- Type 2 Diabetes, Nonalcoholic Fatty Liver Disease, Vitamin D Deficiency
- Interventions
- Ergocalciferol, placebo
- Dietary Supplement
- Lead sponsor
- University of Massachusetts, Worcester
- Other
- Eligibility
- 10 Years to 50 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Worcester, Massachusetts
- Conditions
- Hypovitaminosis D, Hypovitaminosis
- Interventions
- Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Madigan Army Medical Center
- Federal
- Eligibility
- 18 Years to 69 Years
- Enrollment
- 96 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Tacoma, Washington
- 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
- Conditions
- Deficiency of Vitamin D3
- Interventions
- D3 2000 IU/day, D3 4000 IU/day, D3 50,000 IU weekly, vitamin D3 800 IU/day
- Dietary Supplement
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 86 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Osteopenia, Renal Osteodystrophy
- Interventions
- pamidronate
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2002 – 2007
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- X-linked Hypophosphatemia
- Interventions
- burosumab, Placebo
- Biological · Other
- Lead sponsor
- Kyowa Kirin, Inc.
- Industry
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 134 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2018
- U.S. locations
- 8
- States / cities
- Los Angeles, California • San Francisco, California • New Haven, Connecticut + 5 more
- Conditions
- Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy, Hyperinsulinemic Hypoglycemia, Familial 1, Diabetes Mellitus, Adrenoleukodystrophy, Neonatal, Medium-chain Acyl-CoA Dehydrogenase Deficiency, Very Long Chain Acyl Coa Dehydrogenase Deficiency, Beta-ketothiolase Deficiency, Severe Combined Immunodeficiency Due to Adenosine Deaminase Deficiency, Primary Hyperoxaluria Type 1, Congenital Bile Acid Synthesis Defect Type 2, Pyridoxine-Dependent Epilepsy, Hereditary Fructose Intolerance, Hypophosphatasia, Hyperargininemia, Mucopolysaccharidosis Type 6, Argininosuccinic Aciduria, Citrullinemia, Type I, Wilson Disease, Maple Syrup Urine Disease, Type 1A, Maple Syrup Urine Disease, Type 1B, Biotinidase Deficiency, Neonatal Severe Primary Hyperparathyroidism, Intrinsic Factor Deficiency, Usher Syndrome Type 1D/F Digenic (Diagnosis), Cystic Fibrosis, Stickler Syndrome Type 2, Stickler Syndrome Type 1, Alport Syndrome, Autosomal Recessive, Alport Syndrome, X-Linked, Carbamoyl Phosphate Synthetase I Deficiency Disease, Carnitine Palmitoyl Transferase 1A Deficiency, Carnitine Palmitoyltransferase II Deficiency, Cystinosis, Chronic Granulomatous Disease, Cerebrotendinous Xanthomatoses, Maple Syrup Urine Disease, Type 2, Severe Combined Immunodeficiency Due to DCLRE1C Deficiency, Thyroid Dyshormonogenesis 6, Thyroid Dyshormonogenesis 5, Supravalvar Aortic Stenosis, Factor X Deficiency, Hemophilia A, Hemophilia B, Tyrosinemia, Type I, Fructose 1,6 Bisphosphatase Deficiency, Glycogen Storage Disease Type I, G6PD Deficiency, Glycogen Storage Disease II, Galactokinase Deficiency, Mucopolysaccharidosis Type IV A, Galactosemias, Guanidinoacetate Methyltransferase Deficiency, Agat Deficiency, Glutaryl-CoA Dehydrogenase Deficiency, Gtp Cyclohydrolase I Deficiency, Hyperinsulinism-Hyperammonemia Syndrome, Primary Hyperoxaluria Type 2, 3-Hydroxyacyl-CoA Dehydrogenase Deficiency, Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, Mitochondrial Trifunctional Protein Deficiency, Sickle Cell Disease, Beta-Thalassemia, Holocarboxylase Synthetase Deficiency, 3-Hydroxy-3-Methylglutaric Aciduria, Primary Hyperoxaluria Type 3, Hermansky-Pudlak Syndrome 1, Hermansky-Pudlak Syndrome 4, Apparent Mineralocorticoid Excess, HSDB, CBAS1, Mucopolysaccharidosis Type 2, Mucopolysaccharidosis Type 1, Severe Combined Immunodeficiency, X Linked, Severe Combined Immunodeficiency Due to IL-7Ralpha Deficiency, Diabetes Mellitus, Permanent Neonatal, Isovaleric Acidemia, Severe Combined Immunodeficiency T-Cell Negative B-Cell Positive Due to Janus Kinase-3 Deficiency (Disorder), Jervell and Lange-Nielsen Syndrome 2, Hyperinsulinemic Hypoglycemia, Familial, 2, Diabetes Mellitus, Permanent Neonatal, With Neurologic Features, Jervell and Lange-Nielsen Syndrome 1, Lysosomal Acid Lipase Deficiency, CblF, 3-Methylcrotonyl CoA Carboxylase 1 Deficiency, 3-Methylcrotonyl CoA Carboxylase 2 Deficiency, Waardenburg Syndrome Type 2A, Methylmalonic Aciduria cblA Type, Methylmalonic Aciduria cblB Type, Methylmalonic Aciduria and Homocystinuria Type cblC, MAHCD, Methylmalonic Aciduria Due to Methylmalonyl-CoA Mutase Deficiency, Congenital Disorder of Glycosylation Type 1B, Mthfr Deficiency, Methylcobalamin Deficiency Type Cbl G (Disorder), Methylcobalamin Deficiency Type cblE, Usher Syndrome, Type 1B, N-acetylglutamate Synthase Deficiency, Ornithine Transcarbamylase Deficiency, Phenylketonurias, Waardenburg Syndrome Type 1, Congenital Hypothyroidism, Propionic Acidemia, Usher Syndrome, Type 1F, Pancreatic Agenesis 1, Hereditary Hypophosphatemic Rickets, Glycogen Storage Disease IXB, Glycogen Storage Disease IXC, MOWS, Epilepsy, Early-Onset, Vitamin B6-Dependent, Pyridoxal Phosphate-Responsive Seizures, Pituitary Hormone Deficiency, Combined, 1, Ptsd, Dihydropteridine Reductase Deficiency, Severe Combined Immunodeficiency Due to RAG1 Deficiency, Severe Combined Immunodeficiency Due to RAG2 Deficiency, Retinoblastoma, Multiple Endocrine Neoplasia Type 2B, Pseudohypoaldosteronism, Type I, Liddle Syndrome, Biotin-Responsive Basal Ganglia Disease, SCD, DIAR1, GSD1C, Acrodermatitis Enteropathica, Thyroid Dyshormonogenesis 1, Riboflavin Transporter Deficiency, Waardenburg Syndrome, Type 2E, SRD, Congenital Lipoid Adrenal Hyperplasia Due to STAR Deficiency, Barth Syndrome, Adrenocorticotropic Hormone Deficiency, Transcobalamin II Deficiency, Thyroid Dyshormonogenesis 3, Segawa Syndrome, Autosomal Recessive, Autosomal Recessive Nonsyndromic Hearing Loss, Thyroid Dyshormonogenesis 2A, Congenital Isolated Thyroid Stimulating Hormone Deficiency, Hypothyroidism Due to TSH Receptor Mutations, Usher Syndrome Type 1C, Usher Syndrome Type 1G (Diagnosis), Von Willebrand Disease, Type 3, Combined Immunodeficiency Due to ZAP70 Deficiency, Adenine Phosphoribosyltransferase Deficiency, Metachromatic Leukodystrophy, Canavan Disease, Menkes Disease, Carbonic Anhydrase VA Deficiency, Developmental and Epileptic Encephalopathy 2, 17 Alpha-Hydroxylase Deficiency, Smith-Lemli-Opitz Syndrome, Krabbe Disease, Glutathione Synthetase Deficiency, Mucopolysaccharidosis Type 7, Rett Syndrome, Molybdenum Cofactor Deficiency, Type A, Niemann-Pick Disease, Type C1, Niemann-Pick Disease Type C2, Ornithine Aminotransferase Deficiency, 3-Phosphoglycerate Dehydrogenase Deficiency, Leber Congenital Amaurosis 2, Dravet Syndrome, Mucopolysaccharidosis Type 3 A, Ornithine Translocase Deficiency, Carnitine-acylcarnitine Translocase Deficiency, Glucose Transporter Type 1 Deficiency Syndrome, Creatine Transporter Deficiency, Niemann-Pick Disease Type A, Pitt Hopkins Syndrome, Tuberous Sclerosis 1, Tuberous Sclerosis 2, Ataxia With Isolated Vitamin E Deficiency, Angelman Syndrome, Prader-Willi Syndrome, Homocystinuria, Permanent Neonatal Diabetes Mellitus, Transient Neonatal Diabetes Mellitus, Factor VII Deficiency, Glycogen Storage Disease Type IXA1, Glycogen Storage Disease, Type IXA2, Glycogen Storage Disease IC, Glycogen Storage Disease Type IB, Central Hypoventilation Syndrome With or Without Hirschsprung Disease
- Interventions
- Confirmatory Testing
- Diagnostic Test
- Lead sponsor
- RTI International
- Other
- Eligibility
- 1 Day to 31 Days
- Enrollment
- 30,000 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2026
- U.S. locations
- 1
- States / cities
- Research Triangle Park, North Carolina
- 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
- Conditions
- Asthma, Vitamin D Deficiency, Pediatric Obesity
- Interventions
- Vitamin D3 oral regimen
- Dietary Supplement
- Lead sponsor
- IDeA States Pediatric Clinical Trials Network
- Network
- Eligibility
- 6 Years to 17 Years
- Enrollment
- 112 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2021
- U.S. locations
- 15
- States / cities
- Little Rock, Arkansas • Wilmington, Delaware • Honolulu, Hawaii + 12 more
- Conditions
- Cognitive Decline
- Interventions
- 540,000 IU vitamin D3, Placebo
- Drug
- Lead sponsor
- Vanderbilt University Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 95 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2020
- U.S. locations
- 7
- States / cities
- Aurora, Colorado • Boston, Massachusetts • New York, New York + 3 more
- Conditions
- Human Immunodeficiency Virus (HIV), Vitamin D Deficiency, HIV Infections
- Interventions
- Vitamin D, Placebo
- Drug · Other
- Lead sponsor
- University Hospitals Cleveland Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 45 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- Thyroid, PD-1, Cancer
- Interventions
- blood draw and questionnaire completion, questionnaire completion, blood collection
- Other
- Lead sponsor
- Icahn School of Medicine at Mount Sinai
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 17 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2028
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Impaired Fasting Glucose, Impaired Glucose Tolerance, Vitamin D Insufficiency
- Interventions
- Placebo, 50K vitamin D2
- Drug
- Lead sponsor
- US Department of Veterans Affairs
- Federal
- Eligibility
- 35 Years to 85 Years · Male only
- Enrollment
- 205 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Depression, Postpartum Depression
- Interventions
- Vitamin D3 (Cholecalciferol), Placebo
- Dietary Supplement · Other
- Lead sponsor
- St. Luke's-Roosevelt Hospital Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 151 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- New York, New York
- 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
- Conditions
- Vitamin D Deficiency
- Interventions
- Not listed
- Lead sponsor
- Fujirebio Diagnostics, Inc.
- Industry
- Eligibility
- Not listed
- Enrollment
- 482 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- Mountain View, California
- Conditions
- Obese, Vitamin D Deficiency, Low HDL
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- Xiang-An Li
- Other
- Eligibility
- 5 Years to 18 Years
- Enrollment
- 1 participant
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Atopic Dermatitis, Vitamin D Deficiency
- Interventions
- Vitamin D
- Drug
- Lead sponsor
- Medical College of Wisconsin
- Other
- Eligibility
- 1 Year to 18 Years
- Enrollment
- 7 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Milwaukee, Wisconsin
- Conditions
- Hip Arthropathy, Knee Arthropathy, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 900 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2024
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency, Healthy Volunteers
- Interventions
- ALPCO 25(OH) Vitamin D CLIA Kit
- Device
- Lead sponsor
- American Laboratory Products Company
- Industry
- Eligibility
- 22 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026
- U.S. locations
- 1
- States / cities
- Salem, New Hampshire
- Conditions
- Vitamin D Deficiency, HIV
- Interventions
- Vitamin D
- Dietary Supplement
- Lead sponsor
- University of California, Los Angeles
- Other
- Eligibility
- 18 Years to 90 Years
- Enrollment
- 122 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2012
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Obesity, Pediatric, Obesity, Childhood, Obesity, Morbid, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 5 Years to 11 Years
- Enrollment
- 6 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- X-linked Hypophosphatemia
- Interventions
- KRN23
- Drug
- Lead sponsor
- Kyowa Kirin Co., Ltd.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 29 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2013
- U.S. locations
- 5
- States / cities
- San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more