Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
COMPLETED
NA
102 participants
INTERVENTIONAL
2012-11-30
2013-03-31
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
The hypothesis is that vitamin D status are influated by different genetic genotypes in the vitamin D pathway.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Participants will in total receive 4 times UV-B irradiation (3 SED) with two day apart each time, to stimulate vitamin D production in the skin. The participants skintype will be measured. The study starts in January 2013 and runs to the end of Marts 2013. During this winter period, it is in Denmark not possible to produce vitamin D in the skin through sunlight exposure.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Keywords
Explore important study keywords that can help with search, categorization, and topic discovery.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
NA
SINGLE_GROUP
BASIC_SCIENCE
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
UV-B irraditation
VitDgen
VitDgen
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
VitDgen
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
Exclusion Criteria
* intake of medicin that causes photosensitive skin
* pregnant or nursing
* sun vacation 3 month before the intervention
* intake of vitamin D supplement 3 month before the intervention
18 Years
60 Years
ALL
Yes
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
Bispebjerg Hospital
OTHER
Technical University of Denmark
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Lone Banke Rasmussen
M.Sc., Ph.D.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Lone Rasmussen, M.Sc., Ph.D.
Role: PRINCIPAL_INVESTIGATOR
DTU, Denmark
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Bispebjerg Hospital
Bispebjerg, Copenhagen, Denmark
DTU / National Food Institute
Mørkhøj, Søborg, Denmark
Countries
Review the countries where the study has at least one active or historical site.
References
Explore related publications, articles, or registry entries linked to this study.
Nissen J, Vogel U, Ravn-Haren G, Andersen EW, Madsen KH, Nexo BA, Andersen R, Mejborn H, Bjerrum PJ, Rasmussen LB, Wulf HC. Common variants in CYP2R1 and GC genes are both determinants of serum 25-hydroxyvitamin D concentrations after UVB irradiation and after consumption of vitamin D(3)-fortified bread and milk during winter in Denmark. Am J Clin Nutr. 2015 Jan;101(1):218-27. doi: 10.3945/ajcn.114.092148. Epub 2014 Nov 5.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
H-4-2012-071
Identifier Type: -
Identifier Source: org_study_id