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Contact the study team using the details below to take part. If there are no contact details below please ask your doctor in the first instance.

Contact Information:

Prof Sally Ibbotson
s.h.ibbotson@dundee.ac.uk


Dr Nicola Ralph
nralph@mater.ie


Study Location:

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Be Part of Research - Trial Details - European Photopatch Test Study - a consensus methodology (POST Study)

European Photopatch Test Study - a consensus methodology (POST Study)

Completed

Open to: Female / Male

Age: 18 Years - N/A

Medical Conditions

Other disorders of the skin and subcutaneous tissue


This information is provided directly by researchers, and we recognise that it isn't always easy to understand. We are working with researchers to improve the accessibility of this information. In some summaries, you may come across links to external websites. These websites will have more information to help you better understand the study.


In 2002 a panel representing Contact Dermatology/Photobiology and Photophysics met (on behalf of the European
Society of Contact Dermatitis (ESCD) and the European Society of Photodermatology (ESPD)) to discuss the method
of photopatch testing, a list of recommended agents and interpretation of guidelines for photopatch testing. They
concluded that the differences in photopatch testing methodology which exists within Europe, not only sends out a
confusing message to potential users of this technique, but also makes it quite difficult to compare published data
between studies. Since then a further multicentre photopatch test study has been completed (2011) and the taskforce
recommended a list of photoallergens that should form part of the baseline series for photopatch testing in Europe.
Our group met to discuss how best to produce a consensus statement on methodology as this has not yet formally
been addressed. The time at which the patch tests are removed and subsequently irradiated with UVA, varies across
Europe and it is important to know whether this impacts on photopatch test outcomes. We aim to recruit 252 patients
from 13 centres across Europe who are attending for the investigation of photopatch testing. The aims will be to
determine the pattern and prevalence of photoallergens, whether using a 24 h or 48 h allergen application time
influences photopatch test outcomes and whether a delayed 7 day reading adds value to interpretation of photopatch
test results. The study will have a lead Dermatologist with an interest in Contact dermatitis or Photobiology at each
centre. The methodology used will be the same in all centres.

Start dates may differ between countries and research sites. The research team are responsible for keeping the information up-to-date.  

The recruitment start and end dates are as follows:

12 Mar 2018 09 Mar 2020

Interventional

Interventional type: Drug;



You can take part if:



You may not be able to take part if:


1. Unable to understand and comply with the restrictions and requirements of the study 2. Not able to provide written informed consent 3. Recent sunburn/tan on back within 4 weeks of the planned photopatch testing 4. Systemic immunosuppressants, including oral corticosteroids (>10mg/daily prednisolone) 5. Active skin disease on back precluding testing 6. Potent topical corticosteroid use to back within 5 days of planned recruitment and testing 7. Pregnancy or breastfeeding


Below are the locations for where you can take part in the trial. Please note that not all sites may be open.

Dr Nicola Ralph
nralph@mater.ie


Prof Sally Ibbotson
s.h.ibbotson@dundee.ac.uk



The study is sponsored by TAYSIDE and funded by EUROPEAN ACADEMY OF DERMATOLOGY AND VENEREOLOGY .




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for Trial ID: CPMS 36152

Last updated 25 April 2025

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