"Hailey-Hailey disease is an autosomal dominant disorder caused by a genetic defect in a calcium ATPase (ATP2C1) leading to a defect in keratinocyte adhesion. The characteristic of this disease is the involvement of intertriginous areas of the skin, which are the moist sites including the axillary vault and the inguinal crease. The composition of microbial communities is primarily dependent on the physiology of the skin site and the moist sites have distinct compositions of skin microorganisms. In addition, treatment with doxycycline is often helpful in the management of Hailey-Hailey disease. These findings suggest a role of the skin microbiome in the pathogenesis of Hailey-Hailey disease.
The purpose of this study is to characterize the skin microbiome in patients with Hailey-Hailey disease by the 16S method, to better understand the pathogenesis of the disease and to discover new therapeutic targets in the future.
Who can participate
Age range
19 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Clinically diagnosed with Hailey-Hailey as confirmed by histopathology and/or genetic analysis.
. \>19 years old
. Patients who currently have lesions on the axilla and groin
. Patietns who signed the consent form and Informed Consent in Human Material Research
. \>19 years old
. Persions who signed the consent form and Informed Consent in Human Material Research
Exclusion criteria
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
. Patients who have used systemic steroids or antibiotics within the last 1 month
. Patients who have used local steroids or antibiotics within the last 2 weeks
. Patients who have been diagnosed with skin diseases(such as atopic dermatitis) other than Hailey-Hailey disease
. Patients who are unable to swab or who may have affect a medical condition
. Patients who have difficulty making clear decisions due to lack of decision-making ability
. In addition to the above, a person who is considered inappropriate to participate in this study, such as collecting test information, based on the medical judgment of the Principal investigator or Subinvestigator.
. Persions who have skin diseases(such as atopic dermatitis) or diseases affecting the skin microbes
. Persions who have used systemic steroids or antibiotics within the last 1 month