Clinical trials: Disorders of Calcium and Bone Metabolism
X-Linked Hypophosphatemia
A Study to Describe the Lived Experience of XLH for Adolescents at End of Skeletal Growth
An observational, prospective, mixed-methods study involving the integration of quantitative and qualitative data exploring the lived experience of burosumab-treated adolescents with XLH at the end of skeletal growth.
- Trial name
- NCT05181839
- Testing
- Burosumab
- Where
- 14 sites in France, Germany and 3 more
- Volunteers
- 25 people
- Sponsor
- Kyowa Kirin Pharmaceutical Development Ltd
Healthy
Study Comparing Two Isoforms of Vitamin D Supplements for Infants
There are two different types of vitamin D - vitamin D3 (animal source) and vitamin D2 (plant source). Almost all the usual vitamin D preparations for infants available in Canadian pharmacies contain vitamin D3 which may not be…
- Trial name
- NCT01190137
- Testing
- Cholecalciferol (D3) or ergocalciferol (D2)
- Where
- Canada
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- McGill University
Pseudohypoparathyroidism
Study of the Regulation of Parathyroid Hormone Secretion in Pseudohypoparathyroidism
OBJECTIVES: Determine the relationship between serum calcium concentrations and parathyroid hormone secretion in patients with pseudohypoparathyroidism.
- Trial name
- NCT00004661
- Volunteers
- 20 people
- Sponsor
- National Center for Research Resources (NCRR)
Hypophosphatasia
Safety and Efficacy Study of ENB-0040 in Juvenile Patients With Hypophosphatasia (HPP)
This Clinical Trial is being 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
- NCT00894075
- Testing
- ENB-0040
- Sponsor
- Alexion Pharmaceuticals, Inc.
Idiopathic Hypoparathyroidism, Autosomal Dominant Hypocalcaemia
Characterization of Patients With Non-surgical Hypoparathyroidism and Pseudohypoparathyroidism
Hypoparathyroidism (hypoPT) and pseudohypoparathyroidism (Ps-hypoPT) are rare diseases, characterized by low levels of parathyroid hormone [PTH] and plasma calcium or high plasma PTH and low plasma calcium, respectively.
- Conditions
- Idiopathic Hypoparathyroidism, Autosomal Dominant Hypocalcaemia, Pseudohypoparathyroidism
- Trial name
- NCT02551120
- Where
- Denmark
- Volunteers
- 100 people
- Sponsor
- University of Aarhus
Hypophosphatasia (HPP)
A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)
This study aims to characterize the natural history of patients with severe perinatal or infantile onset HPP.
- Trial name
- NCT01419028
- Where
- 12 sites in United States, Australia and 5 more
- Volunteers
- 48 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Rickets
Vitamin D Supplementation in Breastfeeding Women
Adequate vitamin D is essential for proper infant growth and development. However, human milk is low in vitamin D, and most infants do not receive recommended supplementation.
- Conditions
- Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
- Trial name
- NCT01240265
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Osteoporosis
Effect of Sodium Intake on Calcium Retention in Girls
Optimal calcium retention is important for building bone mass within the genetic potential, a key to reducing risk of osteoporosis later in life. Calcium retention is high during the rapid growth period.
- Trial name
- NCT01564238
- Testing
- Low Na diet (1.3 g/d), High sodium diet (3.8 g/d)
- Where
- United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Purdue University
Osteopenia
Calcium From Fish Bone in Volunteers With Osteopenia
The aims of this study are to explore efficacy and safety of calcium from fish bone in volunteers with osteopenia. The volunteers are divided into 2 groups which are calcium from fish bone treatment group and calcium carbonate…
- Trial name
- NCT05381168
- Testing
- Calcium from fish bone, Calcium carbonate
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Chulalongkorn University
Hypophosphatasia (HPP)
Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)
This clinical trial studies the safety and efficacy of asfotase alfa in infants and young children with infantile onset HPP.
- Trial name
- NCT00744042
- Testing
- asfotase alfa
- Where
- 10 sites in United States, Canada and 2 more
- Volunteers
- 11 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Asthma, Vitamin D Resistant Rickets
Assessment Of Vitamin D Role In The Pathogenesis Of Asthma In Vitamin D Resistent Patients
Research Title: Evaluation of airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in vitamin D resistant rickets.
- Trial name
- NCT01578824
- Testing
- Methacholine Challenge Test
- Where
- Israel
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
End Stage Renal Disease, Hyperparathyroidism, Secondary
Mineral and Bone Disorders Outcomes in Stage 5D of Chronic Kidney Disease
The MBD-5D is a prospective observational study with a case-cohort and a cohort design. Eligible patients are receiving hemodialysis and have secondary hyperparathyroidism.
- Trial name
- MBD-5D (NCT00995163)
- Where
- Japan
- Volunteers
- 8,020 people
- Sponsor
- Kyowa Kirin Co., Ltd.
Rothmund-Thomson Syndrome
Calcium Absorption in Patients With Rothmund-Thomson Syndrome
Osteosarcoma is the most common malignant bone tumor in children and adolescents. Because cure rates for osteosarcoma have remained stagnant for the past several decades despite numerous trials of chemotherapy agents, novel…
- Trial name
- NCT01304407
- Testing
- Calcium stable isotope
- Where
- United States
- Volunteers
- 29 people
- Sponsor
- Baylor College of Medicine
Pseudohypoparathyroidism Type 1A, Albright Hereditary Osteodystrophy
Albright Hereditary Osteodystrophy: Natural History, Growth, and Cognitive/Behavioral Assessments
We, the researchers, are following the natural history of Albright hereditary osteodystrophy. We have found that growth hormone deficiency is very common in patients with pseudohypoparathyroidism type 1A, which falls under the…
- Conditions
- Pseudohypoparathyroidism Type 1A, Albright Hereditary Osteodystrophy, Pseudopseudohypoparathyroidism
- Trial name
- NCT00209235
- Testing
- Neurocognitive and psychosocial testing
- Where
- United States
- Volunteers
- 600 people
- Sponsor
- Connecticut Children's Medical Center
X-linked Hypophosphatemia (XLH)
Effective Dosing of Burosumab in XLH
X-linked hypophosphataemia (XLH) is a rare, hereditary condition. The genetic defect leads to low blood phosphate levels and vitamin D suppression. Phosphate is required for strong bones and teeth and to store energy in cells.
- Trial name
- NCT07183579
- Where
- United Kingdom
- Volunteers
- 120 people
- Sponsor
- University of Nottingham
Hypocalcemia, Pseudohypoparathyroidism
Studies of States With Resistance to Vitamin D and Parathyroid Hormone
Patients with confirmed or suspected states with resistance to vitamin D or parathyroid hormone (PTH) will be admitted for diagnosis, treatment review with suggestions for modifications to the current or new treatment and for…
- Conditions
- Hypocalcemia, Pseudohypoparathyroidism, Osteomalacia, Rickets
- Trial name
- NCT00001242
- Where
- United States
- Volunteers
- 70 people
- Sponsor
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Metabolic Bone Disease, Osteopenia
A Study to Assess Metabolic Bone Disease of Prematurity Using an Acoustic Method
The goal of this project is to develop a new noninvasive ultrasound based technique, called vibro-acoustic analysis (VAA), for evaluation of infant bone health with particular application in assessment of bone health in premature…
- Conditions
- Metabolic Bone Disease, Osteopenia, Neonatal Rickets
- Trial name
- NCT04752098
- Testing
- Vibro-acoustic analysis (VAA), based on ultrasound radiation force
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Mayo Clinic
Bone Turnover Rate Disorder, Calcium Metabolism Disorders
Effects of Lansoprazole on Bone Turnover Markers
Use of proton pump inhibitors (PPI) has increased in recent years. There are concerns that PPIs have possible negative effects on bone metabolism.
- Trial name
- NCT04814316
- Testing
- Blood and urine specimens
- Where
- Turkey (Türkiye)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ataturk University
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.
Osteomalacia
Serum FGF-23 and Vitamin D Deficiency
We aimed to determine the effect of vitamin D replacement therapy on serum FGF-23 concentrations in vitamin D deficient women and to compare the FGF-23 concentrations of vitamin D deficient patients with healthy subjects and…
- Trial name
- NCT01102751
- Where
- Turkey (Türkiye)
- Volunteers
- healthy volunteers welcome
- Sponsor
- Istanbul University