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Ann Allergy Asthma Immunol. 2018 Jun;120(6):631-640.e11. doi: 10.1016/j.anai.2018.03.013. Epub 2018 Mar 19.

Effect of short-term liver X receptor activation on epidermal barrier features in mild to moderate atopic dermatitis: A randomized controlled trial.

Author information

1
Department of Dermatology and the Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York; Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York.
2
Department of Pharmacological Sciences, Mount Sinai Center for Bioinformatics, BD2K-LINCS Data Coordination and Integration Center, Icahn School of Medicine at Mount Sinai School, New York, New York.
3
Department of Dermatology and the Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York; College of Medicine, SUNY Downstate, Brooklyn, New York.
4
Vitae Pharmaceuticals Inc, an Allergan affiliate, Irvine, California.
5
Innovaderm Research Inc, Montreal, Quebec, Canada.
6
Department of Dermatology and the Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York.
7
Allergan plc, Irvine, California.
8
Department of Dermatology and the Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York; Laboratory for Investigative Dermatology, The Rockefeller University, New York, New York. Electronic address: emma.guttman@mountsinai.org.

Abstract

BACKGROUND:

Liver X receptors (LXRs) are involved in maintaining epidermal barrier and suppressing inflammatory responses in model systems. The LXR agonist VTP-38543 showed promising results in improving barrier function and inflammatory responses in model systems.

OBJECTIVE:

To assess the safety, tolerability, cellular and molecular changes, and clinical efficacy of the topical VTP-38543 in adults with mild to moderate atopic dermatitis (AD).

METHODS:

A total of 104 ambulatory patients with mild to moderate AD were enrolled in this randomized, double-blind, vehicle-controlled trial between December 2015 and September 2016. VTP-38543 cream in 3 concentrations (0.05%, 0.15%, and 1.0%) or placebo was applied twice daily for 28 days. Pretreatment and posttreatment skin biopsy specimens were obtained from a subset of 33 patients. Changes in SCORing of Atopic Dermatitis, Eczema Area and Severity Index, Investigator's Global Assessment, and tissue biomarkers (by real-time polymerase chain reaction and immunostaining) were evaluated.

RESULTS:

Topical VTP-38543 was safe and well tolerated. VTP-38543 significantly increased messenger RNA (mRNA) expression of epidermal barrier differentiation (loricrin and filaggrin, P = .02) and lipid (adenosine triphosphate-binding cassette subfamily G member 1 and sterol regulatory element binding protein 1c, P < .01) measures and reduced epidermal hyperplasia markers (thickness, keratin 16 mRNA). VTP-38543 nonsignificantly suppressed cellular infiltrates and down-regulated mRNA expression of several TH17/TH22-related (phosphatidylinositol 3, S100 calcium-binding protein A12) and innate immunity (interleukin 6) markers.

CONCLUSION:

Topical VTP-38543 is safe and well tolerated. Its application led to improvement in barrier differentiation and lipids. Longer-term studies are needed to clarify whether a barrier-based approach can induce meaningful suppression of immune abnormalities.

TRIAL REGISTRATION:

clinicaltrials.gov Identifier: NCT02655679.

PMID:
29567358
DOI:
10.1016/j.anai.2018.03.013
[Indexed for MEDLINE]

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