Clinical trials: Avitaminosis
Hypophosphatasia
Expanded Access Program for Asfotase Alfa Treatment for Patients With Infantile- or Juvenile-onset Hypophosphatasia (HPP)
This clinical trial is being conducted in Hypophosphatasia, a bone disorder caused by gene mutation(s) resulting in bone defects. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT02496689
- Testing
- asfotase alfa
- Where
- 5 sites in United States, France
- Sponsor
- Alexion Pharmaceuticals, Inc.
Other Preterm Infants, Vitamin D Deficiency
The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity
This trial objective is to assess whether doubling the daily intake of vitamin D improves serum vitamin D levels and serves as primary prevention of respiratory infections and asthma in premature infants.
- Conditions
- Other Preterm Infants, Vitamin D Deficiency, Bronchiolitis, Asthma
- Trial name
- NCT02404623
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Soroka University Medical Center
Vitamin D Deficiency
Impact of Vitamin D Status on Bones in Breastfed Infants
Vitamin D deficiency is widespread and linked to decreased bone mineral content. Little data exists regarding the vitamin D status and the relationship of 25-hydroxyvitamin D (25-OHD) status to functional bone health outcomes in…
- Trial name
- NCT00697294
- Testing
- Tri-Vi-Sol
- Where
- 3 sites in United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
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
Hypovitaminosis D
Vitamin D Status and the Adequacy of Vitamin D Intake in Early Preterm Infants
Vitamin D is an essential nutrient. Deficiency of vitamin D is widespread. The prevalence of vitamin D deficiency in early preterm infants is unknown.
- Trial name
- NCT01793402
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Vitamin D Deficiency
Vitamin D Deficiency Still Growing
Vitamin D deficiency has become one of the most prevalent health problems in modern society. However, there has been no study that has reported the trend of vitamin D status in Asia.
- Trial name
- NCT03304795
- Volunteers
- 39,759 people, healthy volunteers welcome
- Sponsor
- DongGuk University
Chronic Kidney Disease stage3, Chronic Kidney Disease stage4
Phase 3 Safety and Efficacy Study of CTAP101 Extended-release Capsules in Children With Secondary Hyperparathyroidism
This is a phase 3, multi-center, randomized, double-blind, placebo-controlled study in children with stage 3-4 chronic kidney disease (CKD), secondary hyperparathyroidism (SHPT) and vitamin D insufficiency.
- Conditions
- Chronic Kidney Disease stage3, Chronic Kidney Disease stage4, Vitamin d Deficiency, Secondary Hyperparathyroidism
- Trial name
- NCT05543928
- Testing
- CTAP101
- Where
- 2 sites in United States
- Volunteers
- 2 people
- Sponsor
- OPKO Health, Inc.
Vitamin A Deficiency, Iron-deficiency
Impact of Food-to-Food Fortified Cereal Products on Diet Quality in Eldoret, Kenya
The overall hypotheses is that a product designed with optimized nutritional characteristics, based on consumer preferences and leveraging local nutrient dense ingredients, can successfully deliver nutrition through sustainable…
- Trial name
- KenyaMPS (NCT05882682)
- Where
- Kenya
- Volunteers
- 1,800 people, healthy volunteers welcome
- Sponsor
- Purdue University
Vitamin D Deficiency, Sickle Cell Disease
Vitamin D Status in Children With Sickle Cell Disease Living in Lyon, France
Vitamin D deficiency may be under-diagnosed in sickle cell disease French children. Therefore, the investigator need an epidemiologic study about the prevalence of vitamin D deficiency in this specific population.
- Trial name
- EVADDREP (NCT04694976)
- Testing
- 25-OH Vitamin D measure
- Where
- France
- Volunteers
- 130 people
- Sponsor
- Hospices Civils de Lyon
Vitamin D Deficiency, Orthostatic Intolerance
Vitamin D Deficiency and Dysautonomia
In previous work the investigator identified a group of children between the ages of 10-18 years whose diagnostic workup for chronic nausea unexplained by conventional diagnostic tests has unexpectedly revealed underlying…
- Conditions
- Vitamin D Deficiency, Orthostatic Intolerance, Nausea
- Trial name
- NCT03032328
- Testing
- vitamin D supplement
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Hyperhomocysteinemia, Thrombotic, Cbs-Related, Ischemic Stroke
Methylenetetrahydrofolate Reductase Deficiency in Ischemic Stroke
Adult onset epileptic seizures is rare and often associated with metabolic disorders, drugs and intracranial pathologies such as ischemia, hemorrhage or space-occupying lesions.
- Conditions
- Hyperhomocysteinemia, Thrombotic, Cbs-Related, Ischemic Stroke, Epilepsy
- Trial name
- NCT04287881
- Testing
- Methylenetetrahydrofolate reductase (MTHFR) deficiency
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 32 people
- Sponsor
- Istanbul Medeniyet University
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
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.
Vitamin B 12 Deficiency
The Impact of Vitamin B12 Deficiency on Infant Gut Microbiota
Vitamin B12 plays important roles in DNA synthesis and neurological functions. Vitamin B12 deficiency is one of the most common micronutrient deficiencies and it has become increasingly more frequent in infants.
- Trial name
- NCT03365583
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Marmara University
Vitamin D Deficiency, Preterm Infants
Multi-dose Vitamin D Supplementation in Preterm Infants
Preterm newborns are born with lower vitamin D stores. Although vitamin D supplementation is recommended there is no consensus regarding the adequate dose of supplementation for preterm infants.
- Trial name
- NCT02941185
- Testing
- Devit-3 Oral Drop
- Where
- Turkey (Türkiye)
- Volunteers
- 121 people
- Sponsor
- Zekai Tahir Burak Women's Health Research and Education Hospital
Vitamin D Deficiency, Stress Fracture
Vitamin D3 Supplementation and Stress Fracture Occurrence in High-Risk Collegiate Athletes
The main objective of this study is to find a correlation between vitamin D deficiency and stress fracture occurrences in athletes who participate in high-risk activities.
- Conditions
- Vitamin D Deficiency, Stress Fracture, Athletic Injuries, Orthopedic Disorder
- Trial name
- NCT03395171
- Testing
- Cholecalciferol (Vitamin D3)
- Volunteers
- 118 people, healthy volunteers welcome
- Sponsor
- Prisma Health-Midlands
Vitamin D Deficiency
Effects of Vitamin D Supplementation on Immune Function in Infants
Current study shows that vitamin D deficiency might affect human's immune function. Although breast milk is the best food of infants, however the vitamin D content in breast milk is low.
- Trial name
- NCT04461665
- Testing
- vitamin D
- Where
- Taiwan
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- Shih Chien University
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
Irritable Bowel Syndrome (IBS), Vitamin D Deficiency
Role of Vitamin D Supplementation in Children With Irritable Bowel Syndrome
This study was designed to determine whether vitamin D supplementation improved symptoms in children with irritable bowel syndrome, a condition associated with repeated abdominal pain and changes in bowel habits.
- Trial name
- NCT07914478
- Testing
- Vitamin D3
- Where
- Pakistan
- Volunteers
- 48 people
- Sponsor
- Aziz Bhatti Shaheed Teaching Hospital