Defining the Skin and Blood Biomarkers of Ichthyosis

Enrolling by invitation

Conditions studied: Ichthyosis, Netherton Syndrome

In brief

Ichthyosis is a group of genetic skin disorders that present with dry, thickened, scaly, or flaky skin. As of today, there is no cure or treatment. Doctors can only treat the dry skin with different types of emollients to soften the scale. A deeper understanding of this disease is required to develop better treatments. There are different types of cells and cell-produced signals (biomarkers) that are being studied in order to help find these new treatments. Looking at biomarkers has been successful in helping us to understand other skin disorders better. The purpose of this study is to determine which blood and skin biomarkers characterize ichthyosis. Hypothesis: We predict that the biomarkers correlating with disease activity in Netherton syndrome will be different than the biomarkers found to correlate with the lamellar and other ichthyosis phenotype.

Key facts

Study ID

NCT03417856

Run by

Northwestern University

People needed

200

Starts

2018-01-31

Expected to finish

2027-12-01

Last updated by the study team

2026-04-27

Who can join

Age: 1 and older, up to 60. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Control and ichthyosis subjects may be of either sex and must be between 1-60 years of age at the time of enrollment
• Ichthyosis subjects include individuals with a diagnosis Netherton syndrome, lamellar ichthyosis, or other ichthyosis subtypes
• Ichthyosis subjects should not have administered systemic immunosuppressant therapy in the month before the study
• Ichthyosis subjects should not use topical immunosuppressants in the week before the study
• Ichthyosis subjects should not have applied emollients to the planned biopsy sites within 12 hours before biopsy, but can be applied elsewhere
• Controls may have no inflammatory disease, atopy, or obvious xerosis (urticaria, food allergy, allergic rhinitis or conjunctivitis, asthma)
• Controls for skin sampling may have no observable abnormality in the sampled skin and, to further assure the normality of the "normal" skin edges, must not have evidence of inflammation or epidermal change in the lesion to be surgically removed
• Subjects and guardians of minors must sign the approved IRB consent form(s) prior to initiation of the study protocol

You may not qualify if…

• Subjects who are unable to give informed consent or assent
• Subjects who administered anti-inflammatory systemic and topical therapy or emollients that do not comply with inclusion criteria prior to blood and biopsy sampling
• Subjects whose main diagnosis is deemed unsafe by the study investigator for study participation

Where it is running

• Ann & Robert H. Lurie Children's Hospital of Chicago — Chicago, Illinois, United States
• Northbrook Lurie Children's Outpatient Clinic — Chicago, Illinois, United States
• Northwestern University — Chicago, Illinois, United States
• Icahn School of Medicine at Mount Sinai — New York, New York, United States

Full record on ClinicalTrials.gov

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