Clinical trials: Vitamin A Deficiency
Leg Cramps, Nocturnal
Vitamin D for Painful Nocturnal Leg Cramps
1. Research question: Does vitamin D reduce the frequency and severity of nocturnal leg cramps in older persons who previously took quinine for leg cramps? 2.
- Trial name
- NCT00715429
- Testing
- vitamin d
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Vitamin D Deficiency, Pregnancy
Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina
Science News (October 2004) called vitamin D deficiency a "silent epidemic" in America, with no group unaffected. Using new guidelines of optimal vitamin D levels, more than 90% of African American women now suffer from vitamin D…
- Trial name
- NCT00412087
- Testing
- cholecalciferol (vitamin D3), cholecalciferol
- Where
- United States
- Volunteers
- 564 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Crohn's Disease, Vitamin D Deficiency
Trial of High Dose Vitamin D in Patient's With Crohn's Disease
Crohn's disease is more common in areas of the world with less sunlight exposure. Sunlight is a major source of vitamin D. There is some research to suggest that patient's with higher vitamin D levels are less likely to undergo…
- Trial name
- RODIN-CD (NCT02208310)
- Testing
- Cholecalciferol 10,000 IU, Cholecalciferol 400 IU
- Where
- 4 sites in United States
- Volunteers
- 11 people
- Sponsor
- University of Michigan
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.
Arthralgia, Musculoskeletal Complications
Vitamin D Deficiency, Muscle Pain, Joint Pain, and Joint Stiffness in Postmenopausal Women Receiving Letrozole For Stage I-III Breast Cancer
This phase II trial is studying vitamin D deficiency, muscle pain, joint pain, and joint stiffness in postmenopausal women receiving letrozole for stage I-III breast cancer.
- Conditions
- Arthralgia, Musculoskeletal Complications, Pain, Recurrent Breast Cancer
- Trial name
- NCT00416715
- Testing
- letrozole, calcium carbonate, laboratory biomarker analysis
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- University of Washington
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Hypophosphatasia (HPP)
Safety and Efficacy of Asfotase Alfa in Juvenile Patients With Hypophosphatasia (HPP)
This clinical trial studied the safety and efficacy of asfotase alfa in children with HPP compared to a historical control group.
- Trial name
- NCT00952484
- Testing
- asfotase alfa
- Where
- 2 sites in United States, Canada
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Chronic Kidney Disease, Hyperparathyroidism, Secondary
Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency
This study will evaluate the efficacy of CTAP101 Capsules versus placebo in reducing intact parathyroid hormone (iPTH) by at least 30% from pretreatment baseline; safety and tolerability of CTAP101 will also be evaluated
- Conditions
- Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
- Trial name
- NCT01704079
- Testing
- CTAP101 30 μg capsules, Sugar pill to CTAP101 30 μg capsules
- Where
- United States
- Volunteers
- 216 people
- Sponsor
- OPKO IP Holdings II, Inc.
X-Linked Hypophosphatemia
Efficacy and Safety of Burosumab Versus Oral Phosphate and Active Vitamin D Treatment in Pediatric Patients With XLH
The primary objective of this study is to evaluate the effect of KRN23 (burosumab) therapy in improving rickets in children with XLH compared with active control (oral phosphate/active vitamin D).
- Trial name
- NCT02915705
- Testing
- burosumab, Oral Phosphate Supplement, active vitamin D
- Where
- 16 sites in United States, Australia and 5 more
- Volunteers
- 61 people
- Sponsor
- Kyowa Kirin, Inc.
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.
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.
Hypophosphatasia
Post-approval Clinical Study of Asfotase Alfa Treatment for Patients With Hypophosphatasia (HPP) in Japan
This is a multicenter study in Japan. Eleven sites which have already participated in the investigator-initiated clinical study (Early Access Program) will participate in this study.The objective of this study is to gain further…
- Trial name
- NCT02531867
- Testing
- Asfotase Alfa
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Hypovitaminosis D
Rapid Normalization of Vitamin D in Critically Ill Children: A Phase II Dose Evaluation Randomized Controlled Trial
Documented roles for vitamin D in calcium homeostasis, cardiovascular and respiratory health, inflammation, innate immunity, and neuromuscular function have led to the hypothesis that deficiency might represent a modifiable risk…
- Trial name
- VITdAL-PICU (NCT02452762)
- Testing
- Vitamin D3
- Where
- 4 sites in Austria, Canada and 1 more
- Volunteers
- 67 people
- Sponsor
- Children's Hospital of Eastern Ontario
Hip Fracture, Vitamin D Deficiency
Vitamin D Levels in Frail Elderly Patients With a Hip Fracture
The purpose of this study is to assess whether all frail elderly admitted with hip fracture has a vitamin D deficiency, and if s-25(OH)D deficiency increases the risk of hip fracture in frail elderly.
- Trial name
- NCT01816711
- Where
- Denmark
- Volunteers
- 447 people
- Sponsor
- University of Aarhus
Chronic Kidney Disease, Vitamin D Deficiency
Vitamin D and Coronary Calcification Study
Patients with chronic kidney disease (CKD) have a higher mortality rate than the general population, with cardiovascular disease (CVD) accounting for approximately 50% of deaths.
- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency, Coronary Calcification, Disorders of Calcium and Bone Metabolism
- Trial name
- VCOR (NCT00752102)
- Testing
- Calcitriol (Rocaltrol®), Paricalcitol
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- Joslin Diabetes Center
X-linked Hypophosphatemia
Study of KRN23 (Burosumab), a Recombinant Fully Human Monoclonal Antibody Against Fibroblast Growth Factor 23 (FGF23), in Pediatric Subjects With X-linked Hypophosphatemia (XLH)
The objectives of the study are to: Identify a dose and dosing regimen of burosumab, based on safety and pharmacodynamic (PD) effect, in pediatric XLH participants Establish the safety profile of burosumab for the treatment of…
- Trial name
- NCT02163577
- Testing
- burosumab
- Where
- 9 sites in United States, France and 2 more
- Volunteers
- 52 people
- Sponsor
- Kyowa Kirin, Inc.
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.
Calcium and Vitamin D Deficiencies
Calcichew D3 Preference Study in Participants Eligible for Calcium and Vitamin D Supplementation.
The purpose of this study is to compare the preference of Calcichew D3 500/400 (containing 500 mg calcium and 400 IU of vitamin D) with Adcal-D3 600/400 (containing 600 mg of calcium and 400 IU of vitamin D) in Test Group 1, and…
- Trial name
- NCT02457247
- Testing
- Calcichew D3, Adcal-D3, Kalcipos-D
- Where
- 9 sites in Germany, United Kingdom
- Volunteers
- 276 people
- Sponsor
- Takeda
Healthy
Defining Vitamin D Insufficiency in School Age Children: A Randomized Placebo Controlled Trial of Vitamin D3
The study objective is to characterize the threshold levels of serum 25-hydroxyvitamin D for the definition of vitamin D insufficiency in 8-14 year old African American and Caucasian children.
- Trial name
- Vitamin D RCT (NCT00732758)
- Testing
- Vitamin D3 1000 IU
- Where
- United States
- Volunteers
- 157 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Vitamin D Deficiency
Topical Delivery of Vitamin D3 as Vitamin D Supplementation
After obtaining the approval from the IRB of University of Dammam and informed consent from 550 healthy patients, with vitamin D deficiency and vitamin D insufficiency and deficiency were recruited.
- Trial name
- NCT02735200
- Testing
- Application of topical vitamin d3 (Top-D), Application of Aloe vera gel
- Where
- Saudi Arabia
- Volunteers
- 550 people, healthy volunteers welcome
- Sponsor
- Imam Abdulrahman Bin Faisal University