Clinical trials: Vitamin K
Atrial Fibrillation, Anticoagulant Adverse Reaction
Clinical Trial to Evaluate Efficacy and Safety of Rivaroxaban 15mg and 20mg in Patients With Non-valvular Atrial Fibrillation
In this clinical trial, Rivaroxaban of standard dose (20mg) and reduced dose (15mg) will be administeted in non-valvular atrial fibrillation patients without severe renal dysfunction.
- Trial name
- REVISE-AF (NCT06187311)
- Testing
- Rivaroxaban 20 MG, Rivaroxaban 15 MG
- Where
- South Korea
- Volunteers
- 940 people
- Sponsor
- Korea University Anam Hospital
Malaria
Micronutrients and Child Health Study
The purpose of this study is to determine to what extent supplementation with zinc and other micronutrients are efficacious in preventing malaria in young Tanzanian children.
- Trial name
- MACH (NCT00623857)
- Testing
- Zinc, Vitamins and minerals other than zinc, Vitamins plus zinc and other minerals
- Where
- Tanzania
- Volunteers
- 612 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Rheumatic Heart Disease
INVestIgation of rheumatiC AF Treatment Using Vitamin K Antagonists, Rivaroxaban or Aspirin Studies, Superiority
This program is a comprehensive evaluation of rheumatic valvular heart disease (RVHD), Atrial fibrillation (AF)/flutter and stroke.
- Trial name
- INVICTUS-ASA (NCT02832531)
- Testing
- Rivaroxaban (15 mg), Aspirin
- Sponsor
- Population Health Research Institute
Emphysema or COPD, Aneurysm
The Effects of Discontinuation of Vitamin K Antagonists on the Rate of Elastin Degradation
Background: Elastin is a unique protein providing elasticity, resilience and deformability to dynamic tissues, such as lungs and vasculature. Elastin fibers are characterized by their high affinity for calcium.
- Conditions
- Emphysema or COPD, Aneurysm, Cystic Fibrosis, Alpha 1-Antitrypsin Deficiency
- Trial name
- NCT03285100
- Testing
- Venipuncture
- Where
- Netherlands
- Volunteers
- 30 people
- Sponsor
- Canisius-Wilhelmina Hospital
Head and Neck Cancer, Intraoperative Complications
Coagulation and Vitamin K in Head and Neck Microvascular Free Flap Surgery
For patients with large head and neck tumors the recommended treatment, in many cases, is a combination of extensive surgery and postoperative radiotherapy.
- Conditions
- Head and Neck Cancer, Intraoperative Complications, Coagulation Disorder, Blood, Vitamin K Deficiency
- Trial name
- MVL-COAG (NCT04517461)
- Where
- Sweden
- Volunteers
- 40 people
- Sponsor
- Region Skane
Vascular Calcification
Vitamin k1 and Its Relation to Vascular Calcification in Hemodialysis Patients
Vascular calcification (VC) represents one of the major complications associated with progressive renal impairment. Matrix Gla-protein (MGP) is a vitamin K-dependent protein that acts as a powerful inhibitor of vascular…
- Trial name
- NCT05060809
- Testing
- oral vitamin k1 (phylloquinone)
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Assiut University
Cystic Fibrosis
Vitamin K Supplementation to Reduce Deficiencies in Adults With Cystic Fibrosis
Cystic fibrosis (CF) patients are at risk for vitamin K deficiencies. Supplementation for fat-soluble vitamins A, D, and E is well established, but in CF, there is little data for vitamin K concerning the optimal dose and…
- Trial name
- VITK-FK (NCT04496921)
- Testing
- Vitamin K supplementation, dose #1, Vitamin K supplementation, dose #2
- Where
- 2 sites in Canada
- Sponsor
- Institut de Recherches Cliniques de Montreal
Hepatoblastoma, Hepatic Hemangioendothelioma
PIVKA-II Combined With Alpha-Fetoprotein for Diagnostic and Prognostic Value of Hepatic Tumors in Infants
Although hepatic tumors are uncommon in the perinatal period they are associated with significant morbidity and mortality in affected patients.
- Trial name
- PIVKA-II (NCT03645655)
- Testing
- PIVKA-II
- Where
- China
- Volunteers
- 257 people, healthy volunteers welcome
- Sponsor
- Shanghai Children's Medical Center
Obesity, Insulin Resistance
Vitamin K and Glucose Metabolism in Children at Risk for Diabetes (Vita-K 'n' Kids Study)
The undercarboxylated fractions of the two vitamin K-dependent proteins osteocalcin and matrix Gla protein have been shown to play key roles in type 2 diabetes and cardiovascular disease (at least in mouse models).
- Conditions
- Obesity, Insulin Resistance, Insulin Sensitivity, Prediabetes
- Trial name
- NCT01972113
- Testing
- Low-Dose Vitamin K2 (menaquinone-7; 45 mcg/d), High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Augusta University
Bone Health, Vascular Health
Biocomparison Study
The effects of two vitamin K-forms on carboxylation of the vitamin K-dependent proteins osteocalcin and matrix-gla protein will be compared after supplementing these vitamins in a nutritional dose range.
- Trial name
- NCT01638182
- Testing
- Vitamin K1-capsules, Vitamin K2-capsules
- Where
- Netherlands
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Metastatic Colorectal Cancer
Efficacy and Safety of the Prophylactic Use of Doxycycline +/- Vitamin K Cream
The aim of this Phase 2, two-arm, randomized, double blind placebo controlled study is to evaluate the efficacy of combination therapy of doxycycline and Vitamin K1 compared to doxycycline plus placebo for the prevention of…
- Trial name
- NCT01345526
- Testing
- Reconval K1 Cream, Reconval Cream
- Where
- 2 sites in Germany, Slovenia
- Volunteers
- 124 people
- Sponsor
- Universitätsmedizin Mannheim
Blood Coagulation Disorders
Changes in Oral Vitamin K Intake for Optimization of Chronic Oral Anticoagulation: A Randomized Trial
The primary hypothesis of this trial is that changes in oral vitamin K intake, based on simple food registries, may be superior to conventional changes in doses of medications in order to stabilize chronic oral anticoagulation.
- Trial name
- NCT00355290
- Testing
- Changes on Oral Vitamin K Intake
- Where
- Brazil
- Volunteers
- 114 people
- Sponsor
- Hospital de Clinicas de Porto Alegre
Healthy
Comparison of Absorption of Vitamin K2
From previous studies it appeared that menaquinone-7 (MK-7) is the most effective form of vitamin K. The Japanese soya product natto is one of the richest food sources of MK-7.
- Trial name
- NCT00742768
- Testing
- Vitamin K2 in softgel, Vitamin K2 in Gelpell
- Where
- Netherlands
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Nonvalvular Atrial Fibrillation
AntiCoagulants and COGnition
The purpose of this study is to compare the change of global cognitive performance after 52 weeks of intervention among participants with nonvalvular atrial fibrillation (NVAF) receiving rivaroxaban versus a vitamin K antagonist…
- Trial name
- ACCOG (NCT04073316)
- Testing
- Rivaroxaban 20 MG, Warfarin
- Where
- France
- Volunteers
- 48 people
- Sponsor
- University Hospital, Angers
Ischemic Stroke, Intracranial Hemorrhages
Novel Oral Anticoagulants in Stroke Patients
The present study will monitor and explore acute neurovascular emergencies in patients treated with NOACs compared to those under treatment with VKAs.
- Trial name
- NOACISP (NCT02353585)
- Where
- Switzerland
- Volunteers
- 1,050 people
- Sponsor
- University Hospital, Basel, Switzerland
Ischemic Stroke, Oral Anticoagulation
Advancing Knowledge in Ischemic Stroke Patients on Oral Anticoagulants
The Advancing knowledge in ischemic Stroke PatiEnts on oRal Anticoagulants (ASPERA) study aims to investigate characteristics of ischemic stroke cases occurring in patients on oral anticoagulation for atrial fibrillation (AF) or…
- Conditions
- Ischemic Stroke, Oral Anticoagulation, Atrial Fibrillation (AF), Outcome Assessment
- Trial name
- ASPERA (NCT06823466)
- Where
- 47 sites in Croatia, Denmark and 13 more
- Volunteers
- 200 people
- Sponsor
- University of L'Aquila
Knowledge, Attitudes, Practice
Learning Theory Patient Education for Anticoagulants
The goal of this study is to test the feasibility of a randomized control trial evaluating the educational tool for anticoagulated patients.
- Trial name
- NCT06138184
- Testing
- Anticoagulation Educational Materials, Control Group: Standard of Care
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- University of Utah
Anticoagulant Therapy
Vitamin K for Perioperative Warfarin Management
This is a feasibility study of uninterrupted warfarin with a one time dose of Vitamin K before a surgical procedure.
- Trial name
- NCT07515664
- Testing
- Vitamin K, Warfarin (standard without loading), Warfarin (standard with loading)
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- University of Michigan
Antiphospholipid Syndrome, Vitamine K Antagonist (VKA) Treatment
Point of Care Testing INR in Antiphospholipid Syndrome
Antiphospholipid syndrome (APS) is an autoimmune and prothrombotic disorder that can affect up to 10% of young people experiencing a thrombotic event.
- Trial name
- POCTAS (NCT07570511)
- Testing
- Coaguchek
- Where
- France
- Volunteers
- 150 people
- Sponsor
- Central Hospital, Nancy, France
Pulmonary Embolism (Diagnosis), Deep Vein Thrombosis
Microvisk Continuous Blood Donation Study
Microvisk Technologies Ltd designs and develops test systems for monitoring the effectiveness of Warfarin and Warfarin-like medications.
- Conditions
- Pulmonary Embolism (Diagnosis), Deep Vein Thrombosis, Atrial Fibrillation (AF)
- Trial name
- NCT06648837
- Testing
- Venepuncture, Collection of relevant information
- Where
- United Kingdom
- Volunteers
- 2,500 people
- Sponsor
- Microvisk Technologies Ltd