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Skin DiseaseNCT00910260

Impact on UVB Narrow Band and UVA1 Therapy on Serum 25-hydroxyvitamin D Levels

An observational study of Skin Disease, run by University of Zurich at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

We plan to investigate the serum elevation of 25(OH)D under UVB nb and UVA1 therapy, in order to determine the effect of these nowadays frequently used wavelengths for phototherapy on vitamin D plasma levels. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Skin Disease
What is being tested?
Blood analysis
Type of treatment
Surgery or procedure
How many people
116 participants
Where
1 siteSwitzerland
Study dates
Mar 2009to Feb 2011
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: dermatology clinic

Who may be able to join

  • Dermatological indication for a phototherapy with UVB nb or UVA1
  • Oral and written informed patient consent

Who cannot join

  • Interruption of the light therapy for more than 14 days
  • Withdrawal of consent to participate

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Dermatology Department, University Hospital

    Zurich, 8091

Other trials in Switzerland

About this study

We plan to investigate the serum elevation of 25(OH)D under UVB nb and UVA1 therapy, in order to determine the effect of these nowadays frequently used wavelengths for phototherapy on vitamin D plasma levels. We hope for a better understanding of steady-state and treatment-induced levels of vitamin D changes to better recognize the impact of phototherapy on vitamin D synthesis in the skin, the dimension of vitamin D production to be expected in the course of standard phototherapy and a potential gap in vitamin D production compared to physiological needs which then should be supplemented orally.

Read the detailed description

This is an open observational study in dermatological patients undergoing phototherapy.

In patients with a skin disease and the routinely given indication for a phototherapy with UVB narrow-band (UVB nb, 311nm) or UVA1 (340-400 nm), the serum 25-hydroxyvitamin D, calcium, parathormone, phosphate and albumin levels will be measured before, during and after completion of the 12-week therapy (30 patients per group). Patients will be recruited in the department of dermatology of the University Hospital Zürich in the outpatient clinic. Following oral and written consent, serum 25-hydroxyvitamin D, calcium, parathormone, phosphate and albumin levels will be measured before the therapy, one week after start as well as after completion of the UVB nb/UVA1 therapy.

In parallel to the study the patients will be asked to fill in a questionnaire evaluating the daily vitamin D consume (milk and milk products, fish, food enhanced in vitamin D, multivitamin supplements), sun exposure per week during previous weeks, degree of tanning, the use of sunscreen, the DLQI and Skindex-29.

A physical examination including clinical score where available will be performed at every "checkpoint". During the first physical examination the Fitzpatrick-skin type of patient will be recorded.

The following participant characteristics will be recorded: age, weight, body mass index (BMI), phototype, skin disease, comorbidities, usual medication, and period of the year where UVB nb/UVA1 therapy is performed (summer vs. winter), cumulative UVB nb/UVA1 doses.

Conditions
Skin Disease
Being tested
Blood analysis
Keywords
vitamin D level under phototherapy
Medical subject headings
Skin Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Blood analysisProcedure or surgery

    Serum 25-hydroxyvitamin D, calcium, parathormone, phosphate, C-reactive protein and albumin levels will be measured at every visit: day 0, day 7 and day 84.

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Determination of baseline serum 25-hydroxyvitamin D, calcium, parathormone, phosphate and albumin levels before therapy

    Measured: 6 Months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 May 2009 (estimated)
  2. Study startMar 2009
  3. Primary completionFeb 2011
  4. Study completionFeb 2011

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
116 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00910260
Sponsor's protocol ID
0000
Status last verified
May 2014
First submitted
17 Apr 2009
Last updated
20 May 2014
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

An observational study of Skin Disease, run by University of Zurich at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 20 May 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Determination of baseline serum 25-hydroxyvitamin D, calcium, parathormone, phosphate and albumin levels before therapy (time frame: 6 Months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 May 2014.

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