50 citations
,
December 2005 in “European Journal of Immunology” This study found that a specific mutation in the mouse RXRalpha gene significantly impacts immune responses and causes hair loss and skin cysts.
20 citations
,
March 2019 in “Case Reports in Dermatology” This report describes two cases where patients developed alopecia while undergoing treatment for psoriasis with IL-17 inhibitors, suggesting an unexpected paradoxical reaction.
18 citations
,
January 2017 in “Annals of dermatology/Annals of Dermatology” This study found that Th17 lymphocytes may play a more crucial role than cytotoxic T cells in the development of alopecia areata due to their infiltration around the hair bulb/bulge, which exacerbates hair loss as histopathological grade worsens.
6 citations
,
March 2016 in “Scandinavian journal of immunology” This review discusses various potential treatments for alopecia areata, highlighting the promise of Janus kinase inhibitors but reports no new clinical results.
3 citations
,
September 2025 in “Frontiers in Immunology” This review discusses the complex role of immune disturbances and the JAK-STAT pathway in alopecia areata, noting the success of JAK inhibitors in treatment, while highlighting ongoing debates and challenges in targeting other pathways like IL-17 and TNF-α.
January 2024 in “Frontiers in endocrinology” This study found that genetic variants linked to hypothyroidism significantly increased the risk of developing alopecia areata, suggesting a causative connection between the two conditions.
June 2023 in “Research Square (Research Square)” In this study, researchers used spatial transcriptome profiling to identify immune disturbances in the peri-infundibular region of androgenetic alopecia patients’ hair follicles, finding increased CD4+ T cells with a bias toward Th2 immune responses compared to controls.
January 2012 in “Journal of Investigative Dermatology” Small molecule DMF improves psoriasis and multiple sclerosis, adult skin cells can be made to grow new hair, certain skin cells initiate hair growth, IL-17C controls gut health and can cause skin inflammation, and skin cells produce IL-17 that can lead to psoriasis.
November 2025 in “Journal of Investigative Dermatology” Dithranol reduces inflammation in alopecia areata by lowering certain immune responses.
April 2023 in “Journal of Investigative Dermatology” This study found that mRNA booster vaccinations for SARS-CoV-2 increased protective antibodies without worsening autoimmune disease activity in patients with pemphigus and bullous pemphigoid.
January 2011 in “International Journal of Trichology” The document concludes that doctors should recognize congenital triangular alopecia to avoid unnecessary treatments, as it does not respond to steroids like alopecia areata does.
31 citations
,
February 2014 in “Inflammation Research” This study found that reduced expression of CD200R1 on monocyte-derived macrophages in rheumatoid arthritis patients was significantly associated with higher disease severity and an imbalance in Th17/Treg cells.
December 2012 in “Journal of Dermatological Science” This study found that activating Wnt/beta-catenin signaling in hair follicles is sufficient to induce adipocyte generation in the dermis, affecting both hair follicle stem cell activation and adipocyte differentiation.
30 citations
,
May 2016 in “Expert Opinion on Biological Therapy” This review discusses immune pathways involved in alopecia areata and explores emerging, more targeted therapeutic strategies, noting their potential for better safety and effectiveness compared to traditional immune suppressants.
August 2025 in “Dermatology and Therapy” This study conducted a meta-analysis of gene expression data from alopecia areata patients, identifying 5109 differentially expressed genes and highlighting enriched pathways like JAK-STAT signaling, providing insights into the disease's pathogenesis and potential treatment targets.
65 citations
,
December 2015 in “Experimental dermatology” This study found that both Th1 and Th2 immune responses, along with IL-23 and IL-32 cytokine pathways, are active in alopecia areata lesions, and corticosteroid injections significantly altered these immune markers.
34 citations
,
June 2020 in “British journal of dermatology/British journal of dermatology, Supplement” In this study, researchers observed that follicular damage and stem cell loss in frontal fibrosing alopecia may be mediated by immune attacks at the bulge region, suggesting potential for JAK/STAT-targeting treatments to prevent progression.
25 citations
,
December 2017 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” This study suggests that targeting specific immune pathways, such as IL-12/23 and Th2 cytokines, may offer new treatment options for alopecia areata, a T-cell-mediated disease without current mechanism-specific therapies.
5 citations
,
April 2019 in “Journal of Investigative Dermatology” This study found that oral JAK3 and TYK2/JAK1 inhibitors improved clinical outcomes in alopecia areata patients by reducing immune responses and enhancing hair keratin expression, with stronger effects in those with shorter disease duration.
5 citations
,
February 2022 in “Seminars in cell & developmental biology” This review discusses the complexities of hidradenitis suppurativa pathogenesis, highlighting issues with Notch signaling, immune dysregulation, and the role of keratinocytes and ECM, but reports no new clinical results.
4 citations
,
September 2021 in “Frontiers in allergy” This review discusses the shared biological mechanisms between allergy and autoimmunity, emphasizing pruritus as a central symptom in psychophysiological dermatoses, and reports no new clinical results.
July 2024 in “Journal of Investigative Dermatology” Brepocitinib improves cicatricial alopecia and reduces key immune markers.
July 2022 in “British Journal of Dermatology” This study found that epidermal growth factor receptor inhibitors used in cancer treatment induce a distinct inflammatory response in hair follicles, marked by immune privilege collapse and upregulation of inflammatory pathways.
April 2018 in “Journal of Investigative Dermatology” In this study, researchers observed that alopecia areata patients showed higher Th1 and Th2 responses against specific melanogenesis-related protein epitopes, suggesting a role in disease activity and potential targets for diagnostics and therapies.
December 2024 in “Quality in Sport” This review discusses immunological abnormalities in PCOS, focusing on inflammation and autoantibody production, and reports no new results; it suggests exploring new therapeutic drug targets.
February 2024 in “Veterinary sciences” This study found that canine pemphigus foliaceus skin lesions exhibit a distinct immune signature, with upregulated pro-inflammatory and Th17-related genes, showing similarities to human pemphigus. Further research using advanced sequencing is needed to better understand the disease's pathogenesis.
June 2023 in “Research Square (Research Square)” This study identified shared gene expression changes and immune cell infiltration patterns that may contribute to hair loss in alopecia areata and cutaneous lupus erythematosus, but also highlighted factors that might preserve hair in psoriasis patients.
34 citations
,
November 2022 in “Clinical and Experimental Dermatology” This study found that individuals with AA have a higher incidence of atopic and autoimmune conditions, suggesting both Th1 and Th2 immune responses may play a role in its development.
3 citations
,
October 2020 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings” This research discusses the complex immune pathogenesis of alopecia areata and highlights the success of Jak inhibitors and IL-4Rα antagonists, while IL-17A and PDE4 inhibitors showed limited efficacy; controlled trials are advocated to better understand cytokine involvement.
1 citations
,
January 2025 in “International Journal of Dermatology” This study found that in patients with alopecia areata and atopic dermatitis, 61.5% showed improvement with dupilumab treatment, but 38.5% experienced worsened or new-onset alopecia areata, with higher baseline IgE levels linked to better responses.