Clinical trials: Calcium and Vitamin D Deficiencies
Osteoporosis, Osteopenia
Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
The purpose is to perform a one-year study designed to assess whether treatment of hypovitaminosis D increases intestinal absorption of calcium, subsequent retention of calcium within bone, decreases bone turnover, and favorably…
- Conditions
- Osteoporosis, Osteopenia, Vitamin D Deficiency, Hypoparathyroidism
- Trial name
- NCT00581828
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
X-linked Hypophosphatemia
Examining the Effect of Burosumab on Muscle Function
Patients with X-linked hypophosphatemia (XLH) often report symptoms of fatigue and weakness particularly after exertion, in addition to their skeletal complaints.
- Trial name
- NCT04146935
- Testing
- Burosumab Injection [Crysvita]
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Yale University
Polycystic Ovarian Syndrome, Vitamin D Deficiency
Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome)
The investigators conducted a prospective un-blinded pilot study of Vitamin D plus Calcium (Ca) supplementation in overweight (BMI > 27) premenopausal women diagnosed with Polycystic Ovarian Syndrome (PCOS), as defined by the…
- Trial name
- NCT00743574
- Testing
- Vitamin D2 (Ergocalciferol), Medroxyprogesterone (Provera), Vitamin D3 (Cholecalciferol)
- Where
- United States
- Volunteers
- 36 people
- Sponsor
- Yale University
X-linked Hypophosphatemia
Study of KRN23 in Adults With X-linked Hypophosphatemia (XLH)
The primary efficacy objective of this study is to establish the effect of burosumab treatment compared with placebo on increasing serum phosphorus levels in adults with XLH.
- Trial name
- NCT02526160
- Testing
- burosumab
- Where
- 25 sites in United States, France and 5 more
- Volunteers
- 134 people
- Sponsor
- Kyowa Kirin, Inc.
Vitamin D Deficiency
Treatment of Vitamin D Insufficiency
The purpose of this study is to answer the following questions: Does vitamin D increase calcium absorption, bone mass and muscle mass and function in women past menopause who have mildly low vitamin D levels? Do these benefits…
- Trial name
- NCT00933244
- Testing
- High Dose Vitamin D3, Low Dose Vitamin D3
- Where
- United States
- Volunteers
- 230 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
X-Linked Hypophosphatemia
Study of the Safety, Pharmacodynamics (PD) and Efficacy of KRN23 in Children From 1 to 4 Years Old With X-linked Hypophosphatemia (XLH)
The primary objectives of the study are to: Establish the safety profile of KRN23 for the treatment of XLH in children between 1 and 4 years old Determine the PD effects of KRN23 treatment on serum phosphorus and other PD markers…
- Trial name
- NCT02750618
- Testing
- Burosumab
- Where
- 3 sites in United States
- Volunteers
- 13 people
- Sponsor
- Kyowa Kirin, Inc.
Hypophosphatemia, Familial, Hyperparathyroidism
Effectiveness of Paricalcitol in Reducing Parathyroid Hormone (PTH) Levels in X-linked Hypophosphatemic Rickets
The purpose of this study is to determine the effectiveness of paricalcitol, a form of synthetic vitamin D, in lowering parathyroid hormone (PTH) levels and reducing disease symptoms in children and adults with X-linked…
- Trial name
- NCT00417612
- Testing
- Paricalcitol
- Where
- United States
- Volunteers
- 33 people
- Sponsor
- Yale University
X-linked Hypophosphatemia, Hypophosphatemic Rickets
Calcitriol Monotherapy for X-Linked Hypophosphatemia
Children and adults with XLH recruited will be treated with calcitriol alone (without phosphate supplementation) for one year, during which the calcitriol dose will be escalated during the first 3 months of therapy.
- Conditions
- X-linked Hypophosphatemia, Hypophosphatemic Rickets, Hypophosphatemic Rickets, X-Linked Dominant
- Trial name
- NCT03748966
- Testing
- Calcitriol
- Where
- United States
- Volunteers
- 16 people
- Sponsor
- Massachusetts General Hospital
Secondary Hyperparathyroidism, Chronic Kidney Disease
Study to Assess Patient Management Practices and Quality of Life With Paricalcitol Capsules in the Treatment of Secondary Hyperparathyroidism in Stage 3-5 Chronic Kidney Disease Patients Not Yet on Dialysis
Paricalcitol capsules (Zemplar®) received marketing authorization in Sweden in late 2007 for the prevention and treatment of secondary hyperparathyroidism in patients with Stage 3 \& 4 Chronic Kidney Disease (CKD).
- Trial name
- CAPITOL (NCT01265992)
- Where
- 10 sites in Sweden
- Volunteers
- 50 people
- Sponsor
- AbbVie (prior sponsor, Abbott)
Hypophosphatasia
Open-Label Study of Asfotase Alfa in Infants and Children ≤ 5 Years of Age With Hypophosphatasia (HPP)
This clinical trial was conducted to study hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT01176266
- Testing
- asfotase alfa
- Where
- 23 sites in United States, Australia and 10 more
- Volunteers
- 69 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency
Efficacy of Vitamin D2 to Treat Chronic Kidney Disease Mineral and Bone Disorder
It is hypothesised that the efficacy and safety of Vitamin D2 soft capsule to treat the Chronic Kidney Disease Mineral and Bone Disease (CKD-MBD) are equal to 1,25(OH)2 Vitamin D3 (Rocaltrol) in the patients with CKD stage 3-5.
- Trial name
- NCT01633853
- Testing
- Vitamin D2, 1,25(OH)2 Vit D3
- Where
- China
- Volunteers
- 204 people
- Sponsor
- Dongliang Zhang, MD
Hypophosphatasia (HPP)
Retrospective, Non-interventional Natural History of Patients With Juvenile-onset Hypophosphatasia (HPP)
The purpose of this study is to characterize the natural history of HPP in patients with Juvenile-onset HPP.
- Trial name
- NCT02104219
- Where
- 19 sites in United States, Australia and 6 more
- Volunteers
- 32 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Hypocalcemia, Rickets
Studies With 1,25-Dihydroxycholecalciferol
Vitamin D in the diet undergoes changes in the liver and kidneys to several forms. Patients suffering from disorders with Vitamin D resistance are unable to absorb calcium from food.
- Trial name
- NCT00001151
- Testing
- 1,25-Dihydroxycholecalciferol
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
X-Linked Hypophosphatemia
Long-Term Extension Study of KRN23 in Adult Subjects With X-Linked Hypophosphatemia (XLH)
The primary objectives of this study are to: Assess the long-term safety of KRN23 subcutaneous (SC) administration in adult subjects with XLH Assess the proportion of subjects achieving serum phosphorus levels in the normal range…
- Trial name
- NCT02312687
- Testing
- KRN23
- Where
- 5 sites in United States
- Volunteers
- 20 people
- Sponsor
- Kyowa Kirin, Inc.
X-linked Hypophosphatemia
An Extension Study of KRN23 in Adults With X-Linked Hypophosphatemia
The primary purpose of this study is to assess the safety and efficacy of repeated subcutaneous (SC) injections of KRN23 in adult subjects with X-Linked Hypophosphatemia (XLH).
- Trial name
- NCT01571596
- Testing
- KRN23
- Where
- 6 sites in United States, Canada
- Volunteers
- 23 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder
Calcium and Phosphorus Whole-Body Balance and Kinetics in Patients With Moderate Chronic Kidney Disease
This pilot study aims to develop a method for simultaneous whole-body calcium and phosphorus balance and full kinetic modeling of both ions in patients with chronic kidney disease.
- Conditions
- Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Diseases
- Trial name
- NCT04019379
- Testing
- High Phosphorus Diet, Low Phosphorus Diet
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- University of Minnesota
Nephrolithiasis, Urolithiasis
Vitamin D Repletion in Stone Formers With Hypercalciuria
Vitamin D plays a critical role in maintaining bone health, as well as preventing cardiovascular disease, cancer, and various autoimmune diseases, such as diabetes.
- Conditions
- Nephrolithiasis, Urolithiasis, Idiopathic Hypercalciuria, Vitamin D Deficiency
- Trial name
- NCT01295879
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- New York Presbyterian Hospital
Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy
The Effect of Etelcalcetide on CKD-MBD
The proposed study will investigate the effects of etelcalcetide on the bone and blood-vessel health in patients with CKD-MBD. The investigators will test if etelcalcetide makes bone and blood-vessels healthier.
- Conditions
- Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Vascular Calcification, Hyperparathyroidism; Secondary, Renal
- Trial name
- Parsabiv-MBD (NCT03960437)
- Testing
- Etelcalcetide
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- Thomas Nickolas, MD MS
X-linked Hypophosphatemia
A Repeated Study of KRN23 in Adults With X-Linked Hypophosphatemia
The primary purpose of this study is to assess the safety and efficacy of repeated subcutaneous (SC) injections of KRN23 in adult subjects with X-Linked Hypophosphatemia (XLH).
- Trial name
- NCT01340482
- Testing
- KRN23
- Where
- 6 sites in United States, Canada
- Volunteers
- 29 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Osteoporosis, Renal Osteodystrophy
The Effects of 12-months of Denosumab on Bone Density in Prevalent Kidney Transplant Recipients
This is a Phase 2 Multi-Center Clinical Trial (safety and effectiveness trial) in 60 patients (40 denosumab; 20 placebo) who have had a kidney transplant for 12-months or longer with more than 30% of kidney function.
- Conditions
- Osteoporosis, Renal Osteodystrophy, Kidney Transplant; Complications
- Trial name
- ProliaKTx (NCT03960554)
- Testing
- Denosumab Inj 60 mg/ml
- Where
- 3 sites in United States
- Volunteers
- 8 people
- Sponsor
- Thomas Nickolas, MD MS