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Completed

NCT Number: NCT01741233

The Genetics Behind Vitamin D Status (VitDgen)

The overall purpose of the study is to investigate whether there is a relationship between 26 different single nucleotide polymorphisms (SNPs) in the vitamin D pathway, ultraviolet B (UV-B) irradiation of the skin and vitamin D status.

The hypothesis is that vitamin D status are influated by different genetic genotypes in the vitamin D pathway.

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Key information

Conditions

Vitamin D Deficiency Avitaminosis Deficiency Diseases Malnutrition Nutrition Disorders Nutritional and Metabolic Diseases

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Bispebjerg Hospital, Bispebjerg, Copenhagen, Denmark

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About this study

In this study approximately 80 participants (over 18 years) are included. All the participants has previously participated in the VitmaD intervention study (NCT01184716) .

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Health participants over 18 years, that previously participated in VitmaD intervention study

Exclusion criteria

  • skindiseases
  • 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

Treatment and study plan

VitDgen

Genetic

Primary outcomes

  1. serum 25-hydroxyvitamin D

    Time frame: 10 days

    Measures the vitamin D status i serum at baseline and at the end of the project

Secondary outcomes

  1. Skintest

    Time frame: 10 days

    Optimize scientific; measures pigmentation and redness of the skin. Are measured at baseline and at end of project

Sponsors and collaborators

Lead sponsor

Technical University of Denmark

Other

Collaborators

  • Bispebjerg Hospital

Registry information

Acronym: VitDgen

Important dates

Study start
2012
Primary completion
2013
Study completion
2013
First posted
Dec 4, 2012
Registry last updated
Aug 1, 2013

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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