The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter

• Register: ClinicalTrials.gov
• Last refreshed on: 19 February 2015
• Main ID: NCT02275650
• Date of registration: 19/10/2014
• Prospective Registration: No
• Primary sponsor: Joint Authority for Päijät-Häme Social and Health Care
• Public title: The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter
• Scientific title: The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter
• Date of first enrolment: September 2013
• Target sample size: 37
• Recruitment status: Completed
• URL: http://clinicaltrials.gov/show/NCT02275650
• Study type: Interventional
• Study design: Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention
• Phase: N/A

Countries of recruitment

Finland

Contacts

• Name: Toni T Karppinen, MD
• Affiliation: Päijät-Häme Central Hospital

• Name: Erna Snellman, professor
• Affiliation: Tampere University Hospital

Key inclusion & exclusion criteria

Inclusion Criteria:

- age over 18

- Fitzpacker's skin type II-IV

Exclusion Criteria:

- age under 18

- diseases that inhibit vitamin D metabolism or absorption

- Fitzpacker's skin type I

- history of skin cancer

- vitamin D substitution 1 month before baseline or during study

- sun holidays 1 month before baseline or during study



Age minimum: 18 Years
Age maximum: N/A
Gender: Both

Health Condition(s) or Problem(s) studied

Vitamin D Deficiency

Intervention(s)

Radiation: nbUVB

Primary Outcome(s)

25(OH)D level [Time Frame: up to 30 weeks]

Secondary Outcome(s)

CYP27A1 and CYP27B1 enzyme expression levels [Time Frame: up to 14 weeks]

Secondary ID(s)

maintenance_uv

Source(s) of Monetary Support

Please refer to primary and secondary sponsors

Secondary Sponsor(s)

Tampere University Hospital