Plucked Hair Follicles From Patients With Chronic Discoid Lupus Erythematosus Show a Disease-Specific Molecular Signature
July 2019
in “
Lupus Science & Medicine
”
Studysummary In this study, gene expression analysis of plucked hair follicles from scalp lesions was sufficient to differentiate chronic discoid lupus erythematosus from psoriasis and healthy controls, suggesting a non-invasive diagnostic potential. Our plain-language summary of this paper — not a Tressless recommendation.
The study investigated a non-invasive diagnostic method for chronic discoid lupus erythematosus (CDLE) by analyzing plucked hair follicles (HFs) from 7 CDLE patients, 6 psoriasis patients, and 5 healthy controls. It identified a disease-specific molecular signature in CDLE, characterized by upregulation of interferon-stimulated genes, complement components, and genes related to apoptosis and CD8+ T-cell responses. These findings suggested that CDLE causes irreversible alopecia due to immune-mediated damage to the HF stem cell niche. The research indicated that plucked HFs could potentially replace invasive scalp biopsies for diagnosing CDLE, though further clinical validation was needed.