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Thai researchers hunt for genes behind rare sun allergy

NCT ID NCT07055009

Knowledge-focused Sponsor: Chulalongkorn University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at the genes of 47 Thai people with actinic prurigo, a rare skin condition triggered by sunlight. Researchers will compare their DNA to healthy volunteers to find genetic links. The goal is to understand why some people get this disease and why treatments work differently for different people.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help identify genetic markers for actinic prurigo, potentially leading to better diagnosis or personalized treatment approaches.
What could go wrong
This is an observational study with only 47 participants, so findings may not apply to all populations. It is not testing a treatment, so no direct benefit for patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 47 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Actinic Prurigo (AP)

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Thai ethnicity * Diagnosed with Actinic Prurigo (AP) according to the diagnostic criteria defined for this study * Mentally competent, able to communicate, and able to read Thai. * Participants receiving Thalidomide treatment must use two simultaneous methods of contraception, starting at least 4 weeks prior to initiating the medication and continuing throughout the treatment period and for at least 4 weeks after discontinuation. Exclusion Criteria: * History and physical examination findings suggestive of other photodermatoses such as Lupus erythematosus, Porphyria, or Polymorphous Light Eruption, among others. * Elevated Epstein-Barr Virus (EBV) viral load detected in blood testing (EBV viral load will be tested in all participants). * Low Minimal Erythema Dose (MED) to UVB radiation as the only abnormal finding.

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Conditions

The condition(s) this trial relates to.

actinic prurigo

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Actinic prurigo

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Faculty of Medicine Chulalongkorn University

    RECRUITING

    Bangkok, Thailand