6 citations
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October 2024 in “Journal of Family Medicine and Primary Care” This systematic review details monitoring and safety guidelines for primary care physicians regarding Janus kinase and tyrosine kinase 2 inhibitors used in treating inflammatory skin conditions, emphasizing their efficacy and the importance of updated knowledge due to associated box warnings and increasing use.
December 2025 in “Egyptian Journal of Basic and Applied Sciences” This study found that the JAK1 rs310241 AG genotype is associated with a 4.6-fold increased risk of alopecia areata, whereas JAK2 polymorphisms showed no significant link, suggesting a potential genetic susceptibility factor warranting further research.
16 citations
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January 2020 in “Annals of the rheumatic diseases” In this study, baricitinib improved the resolution of arthritis or rash in patients with systemic lupus erythematosus, but outcomes for skin involvement like alopecia were not reported.
15 citations
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December 2018 in “International journal of environmental research and public health/International journal of environmental research and public health” This study observed that Epigallocatechin-3-gallate (EGCG) can inhibit phosphorylation of STAT1 and reduce a specific subset of immune cells in vitro and ex vivo, suggesting a potential role in maintaining immune privilege in alopecia areata.
3 citations
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April 2016 in “Journal of Investigative Dermatology” In this open-label trial, tofacitinib showed dramatic clinical responses in most patients with moderate-to-severe alopecia areata, supporting further research into JAK inhibitors for this condition.
March 2026 in “Tropical Journal of Natural Product Research” In this study, the bark extract of Albizia saponaria was analyzed for its metabolites and potential anti-alopecia effects, identifying several compounds with predicted affinities for proteins involved in hair loss pathways.
December 2025 in “The Journal of Dermatology” This study reported that ritlecitinib effectively improved hair regrowth in JAK inhibitor-naïve adolescent patients with severe alopecia areata, achieving significant reductions in SALT scores within 24 weeks, but was less effective for patients who had previously been treated with baricitinib.
4 citations
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June 2023 in “Frontiers in immunology” This study found that JAK inhibitors effectively improve alopecia areata outcomes, as indicated by SALT scores, but they were associated with an increased risk of adverse effects, with 921 out of 1508 patients experiencing adverse reactions.
2 citations
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September 2024 in “Journal of the American Academy of Dermatology” Deuruxolitinib significantly helps regrow scalp hair in adults with moderate to severe alopecia areata.
2 citations
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September 2023 in “Journal of the American Academy of Dermatology” CTP-543 effectively promotes hair regrowth in adults with moderate to severe alopecia areata.
January 2026 in “Cytokine” 21 citations
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May 2024 in “Journal of Ethnopharmacology”
JAK inhibitors effectively regrow hair in alopecia areata but hair loss often returns after stopping treatment.
184 citations
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February 2015 in “EBioMedicine” This study observed that baricitinib treatment led to significant improvement in a patient's alopecia areata symptoms and suggests further clinical trials to explore its potential as a treatment.
24 citations
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July 2021 in “Pharmaceutics” This article reviews the JAK signaling pathway and the development of ruxolitinib cream as a targeted treatment for inflammatory skin diseases, reporting no new clinical results.
701 citations
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August 2014 in “Nature medicine” This study found that JAK inhibitors promote hair regrowth in both mice and human alopecia areata cases by blocking key immune pathways involved in disease development.
40 citations
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August 2022 in “Frontiers in immunology” This review discusses the potential of JAK inhibitors as a promising treatment strategy for alopecia areata, highlighting their mechanism and recent FDA approval based on clinical trial efficacy.
16 citations
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July 2020 in “International Journal of Molecular Sciences” This study found that ruxolitinib modulated inflammatory changes and stimulated growth factor signals by blocking the JAK-STAT pathway in an in vitro model of alopecia areata.
48 citations
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November 2017 in “Journal of the American Academy of Dermatology” Tofacitinib 2% ointment helped hair regrow in 3 out of 10 patients with alopecia areata, but caused side effects like scalp irritation and raised cholesterol in some.
32 citations
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April 2019 in “JAAD case reports” This study discusses the immune dysregulation observed in individuals with Down syndrome, highlighting their increased risk for autoimmune skin conditions, but does not yet clarify the molecular mechanisms behind this profile.
14 citations
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July 2021 in “Anais brasileiros de dermatologia/Anais Brasileiros de Dermatologia” This study found that alopecia areata patients had higher baseline interleukin levels, which significantly decreased with tofacitinib treatment, though this change did not correspond to disease severity improvement.
8 citations
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November 2024 in “EMBO Molecular Medicine” In this study, researchers found that disrupting EGFR signaling in mice led to increased inflammation and hair follicle damage but that inhibiting the JAK-STAT1 pathway could restore hair growth and skin function.
5 citations
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May 2024 in “Journal of Allergy and Clinical Immunology Global” In this case study, a 29-year-old male with severe atopic dermatitis and alopecia universalis experienced an excellent response to treatment with upadacitinib, indicating it may be a promising option for similar patients.
4 citations
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November 2020 in “Acta Dermato Venereologica” In this study, patients with specific skin and scalp conditions, including eczematous lesions, showed significant improvement after two weeks of oral tofacitinib treatment, as evidenced by changes in the trunk lesions.
3 citations
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June 2025 in “Archives of Dermatological Research” In this review, researchers found that TNF-α, IL-17, and JAK inhibitors show the most promise for stabilizing and resolving scarring alopecias, with IL-23 and Interferon Alpha Receptor 1 inhibitors also providing some benefits in managing these hair loss conditions.
2 citations
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April 2018 in “Journal of Investigative Dermatology” This study suggests that frontal fibrosing alopecia is a highly inflammatory disease involving TH1 and JAK-STAT pathways, without reduced hair keratins, highlighting JAK-STAT signaling as a potential therapeutic target.
1 citations
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December 2022 in “The Nishinihon Journal of Dermatology” This source reports that based on international Phase 3 trial results, the JAK1/2 inhibitor baricitinib was approved in Japan in June 2022 for treating extensive alopecia areata, offering a potentially useful treatment option.
1 citations
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October 2020 in “Journal of Investigative Dermatology Symposium Proceedings” This report from the seventh AA Research Summit discusses research highlights and sets future priorities for managing alopecia areata.
May 2026 in “Journal of Human Immunity” In this study, researchers found that the JAK1/2 inhibitor ruxolitinib helped normalize tissue-specific autoimmunity in APECED patients by reducing inflammation and immune cell accumulation, but it was also linked to subclinical side effects like anemia and weight gain.
November 2025 in “Journal of Investigative Dermatology” Combining MMP-9 and JAK inhibitors can effectively prevent skin depigmentation in vitiligo.