Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency, Infertility
Vitamin D Deficiency of Couples and Infertility
Between March 2016 and March 2017, we performed a large retrospective, non-interventional, single-center cohort study and measured 25(OH)D3 plasma levels prior to ovarian stimulation in couples who underwent IVF/ICSI.And we…
- Conditions
- Vitamin D Deficiency, Infertility, Couples, In-vitro Fertilization
- Trial name
- NCT03305510
- Testing
- vitamin D is below 20ng/ml
- Volunteers
- 1,500 people
- Sponsor
- Tongji Hospital
Respiratory Infection
Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents
This study will test the role of high dose vitamin D supplementation in prevention of acute respiratory infection in older nursing home residents.
- Trial name
- NCT01102374
- Testing
- High Dose Vitamin D, Standard Dose Vitamin D, Usual Care
- Where
- United States
- Volunteers
- 107 people
- Sponsor
- University of Colorado, Denver
Obesity, Insulin Resistance
Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth
Vitamin D deficiency is extremely common in obese youth. In our obese population followed in the Endocrinology clinic at Children's Medical Center Dallas, vitamin D levels were inversely correlated with a measure of insulin…
- Conditions
- Obesity, Insulin Resistance, Vitamin D Deficiency
- Trial name
- NCT02168660
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- Perrin C White, MD
Vitamin d Deficiency
Effects of Vitamin D on Cardiovascular Health in Black Women
The goal of this clinical trial is to understand the effects of oral vitamin D3 supplementation on various cardiovascular risk factors in generally healthy, young adult black women who are vitamin D deficient or insufficient at…
- Trial name
- NCT05656742
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Delaware
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, B12 Deficiency Vitamin
Relationship Between Vitamin D and Vitamin B12 Levels and Neuropathic Pain in Lipedema
Lipedema is a disease characterized by bilateral abnormal fat deposition in the upper and lower extremities. Pain is a common symptom in lipedema.Vitamin D plays an important role in chronic pain.
- Conditions
- Vitamin D Deficiency, B12 Deficiency Vitamin, Lipedema
- Trial name
- NCT06338059
- Testing
- Vitamin B12 Level
- Where
- Turkey (Türkiye)
- Volunteers
- 200 people
- Sponsor
- Fatih Sultan Mehmet Training and Research Hospital
Cystic Fibrosis
Comparison of Absorption of Vitamin D in Cystic Fibrosis
The investigators predict that a powder pill form of vitamin D will be more effectively absorbed than an oil form of vitamin D in people diagnosed with Cystic Fibrosis.
- Trial name
- NCT01880346
- Testing
- Vitamin D Powder, Vitamin D Oil
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Emory University
Chronic Obstructive Pulmonary Disease, Muscle Weakness
Cholecalciferol Supplementation in Strengthening Inspiratory Muscles in Cholecalciferol-Deficient Patients With Chronic Obstructive Pulmonary Disease
This phase IIb randomized trial studies how well cholecalciferol (vitamin D3) supplementation works in strengthening inspiratory muscles in cholecalciferol-deficient patients with chronic obstructive pulmonary disease (COPD).
- Trial name
- NCT02877641
- Testing
- Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin
- Where
- United States
- Volunteers
- 4 people
- Sponsor
- Roswell Park Cancer Institute
Vitamin D Deficiency, Breast Milk Collection
Vitamin D Sulfates in Breastmilk
Infants The purpose of this study is to measure breastmilk's vitamin D sulfate nutritional value in infant's saliva and digesta (gut).
- Trial name
- NCT06203041
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Oral Lichen Planus, Vitamin D Deficiency
Vitamin D Deficiency As a Risk Factor for the Development and Malignant Transformation of Oral Lichen Planus
To examine how a lack of vitamin D may increase the risk of developing oral lichen planus and its malignant progression while accounting for sex, food habits, sunlight, socioeconomic level, and psychological variables.
- Trial name
- NCT06033105
- Testing
- ELISA
- Where
- Egypt
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Fayoum University
Vitamin D Deficiency, Insulin Resistance
Assessment of Influence of Vitamin D on Insulin Secretion and Sensitivity in Obese Teenage Girls
The purpose of the study is to assess the relationship between vitamin D status and insulin- glucose dynamics in obese Adolescents.
- Conditions
- Vitamin D Deficiency, Insulin Resistance, Insulin Sensitivity, Obesity
- Trial name
- NCT00851396
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- University of Alabama at Birmingham
Vitamin D Deficiency, Inflammatory Bowel Diseases
Vitamin D Status in Inflammatory Bowel Disease
Inflammatory bowel disease (IBD), comprising crohn's disease (CD) and ulcerative colitis (UC), is a a chronic, relapsing-remitting systemic disease.
- Trial name
- vdsinibd (NCT03496246)
- Testing
- serum total 25 hydroxycholecalciferol 25(OH) vitamin D, complete blood count (CBC), serum calcium level
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Assiut University
Vitamin D Status
Vitamin D Supplementation and Immunity/Physical Performance
The purpose of this study is to examine the effect of vitamin D supplementation on vitamin D status, immunity and physical performance.
- Trial name
- NCT03132103
- Testing
- Oral Vitamin D3, Solar simulated radiation (SSR)
- Where
- United Kingdom
- Volunteers
- 260 people, healthy volunteers welcome
- Sponsor
- Bangor University
Vitamin D Deficiency
Personalized Vitamin D Supplementation in European and African Americans
The proposed study is a randomized, double-blind, controlled, multi-center clinical trial of six months of daily oral vitamin D3 (cholecalciferol).
- Trial name
- NCT02362269
- Testing
- Vitamin D
- Where
- 2 sites in United States
- Volunteers
- 169 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Breast Cancer, Endocrine Therapy
Relationship Between Body Composition, Food Consumption, and Micro and Macronutrients With Gene Expression in Breast Cancer
The protocol involves measurement of 25 hidroxy vitamin D, gene expression of cytochrome and vitamin D receptor , endoxifen, tamoxifen, exemestane, and other metobolites related to nutrition and endocrine metabolism.
- Conditions
- Breast Cancer, Endocrine Therapy, Endocrine Therapy Adverse Reaction, Vitamin D Deficiency
- Trial name
- NUTRIBREAST (NCT04389424)
- Testing
- Tamoxifen, Exemestane, Anastrozole
- Where
- Mexico
- Volunteers
- 300 people
- Sponsor
- Instituto Jalisciense de Cancerologia
Vitamin D Deficiency
Effect of Vitamin D3 and Omega-3FA on Leptin and HbA1C With Vitamin D Deficiency
The Combined effect of Vitamin D3 and Omega-3 supplements on serum leptin and Glycated hemoglobin (Hb A1C) levels in Jordanian people with vitamin D deficiency.
- Trial name
- NCT03735303
- Testing
- VD3 group, omega 3 FA group, VD3 and omega- 3FA group
- Where
- Jordan
- Volunteers
- 146 people, healthy volunteers welcome
- Sponsor
- Applied Science Private University
Osteoporosis, Fractures
Determination of Optimum Age for DXA Screening for Osteoporosis in HIV - The Probono 1 Study
The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups.
- Conditions
- Osteoporosis, Fractures, HIV Infection
- Trial name
- Probono1 (NCT01669954)
- Where
- United Kingdom
- Volunteers
- 440 people, healthy volunteers welcome
- Sponsor
- King's College London
Diabetes Mellitus, Type 2, Hypertension
Vitamin D and Immune Mechanisms of Hypertension in Type 2 Diabetics
This trial will evaluate whether a particular type of circulating white blood cell, monocytes, from type 2 diabetics with high blood pressure and vitamin D deficiency vs.
- Conditions
- Diabetes Mellitus, Type 2, Hypertension, Vitamin D Deficiency
- Trial name
- VDIM (NCT03348280)
- Testing
- Blood draw
- Where
- 2 sites in United States
- Volunteers
- 40 people
- Sponsor
- Washington University School of Medicine
Secondary Hyperparathyroidism
Open-label Study to Assess the Long-term Safety and Efficacy of Etelcalcetide (Also Known as AMG 416 or KAI-4169) in Patients With Secondary Hyperparathyroidism
The purpose of this study is to evaluate the long term safety and efficacy of thrice weekly intravenous (IV) administration of etelcalcetide in the treatment of secondary hyperparathyroidism (SHPT) in patients receiving…
- Trial name
- NCT01576146
- Testing
- Etelcalcetide
- Volunteers
- 30 people
- Sponsor
- KAI Pharmaceuticals
Vitamin D Deficiency, Hepatocellular Carcinoma
Peri-operative Vitamin D Therapy for Hepatectomy
The goal of this double-blind, randomized controlled trial is to test the effect of short-term and high-dose vitamin D therapy in patients undergoing hepatectomy for hepatocellular carcinoma.
- Conditions
- Vitamin D Deficiency, Hepatocellular Carcinoma, Perioperative Complication
- Trial name
- NCT05650151
- Testing
- Vitamin D
- Volunteers
- 200 people
- Sponsor
- National Taiwan University Hospital
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