14 citations
,
April 2021 in “International journal of molecular sciences” This study found that human hematopoietic mesenchymal stem cells increased the viability and migration of human outer root sheath cells in an in vitro alopecia areata model, involving Wnt/β-catenin and JAK/STAT pathways.
14 citations
,
January 2020 in “Mediterranean Journal of Rheumatology” This review discusses the development of Janus kinase inhibitors for dermatologic diseases and reports no new results; the authors note the need for further research on their efficacy and safety.
13 citations
,
September 2022 in “Frontiers in immunology” This study found that Ifidancitinib, a JAK1/3 inhibitor, significantly promoted hair regrowth and reduced inflammation in a mouse model of alopecia areata by decreasing pathogenic T cell activity and inducing T cell exhaustion.
12 citations
,
November 2023 in “Skin Appendage Disorders” This study suggests that although data on JAK inhibitors for treating LPP and FFA is mainly from retrospective studies and case reports, these inhibitors may offer a new treatment option, particularly for challenging cases.
11 citations
,
September 2024 in “American Journal of Clinical Dermatology” Switching JAK inhibitors or using dupilumab may help some alopecia areata patients who don't respond well to initial treatments.
11 citations
,
December 2018 in “Journal of the European Academy of Dermatology and Venereology” This article is a Letter to the Editor discussing rebound effects associated with JAK inhibitor use in treating alopecia areata and reports no new clinical results.
11 citations
,
October 2018 in “Pediatric dermatology” In this case report, the authors describe a child with treatment-resistant alopecia areata who successfully responded to leflunomide and anthralin, proposing this combination as a potentially cost-effective alternative for managing recalcitrant cases by possibly inhibiting the JAK/STAT pathway.
11 citations
,
April 2015 in “EBioMedicine” This research highlights that JAK inhibitors, such as baricitinib, may effectively reverse symptoms of alopecia areata by targeting specific immune pathways, though safety and efficacy require further investigation.
9 citations
,
January 2023 in “Dermatology and therapy” This case report describes a 14-year-old girl with alopecia universalis and mild atopic dermatitis who achieved complete hair regrowth and eczema resolution after three months of treatment with the JAK1 inhibitor upadacitinib.
8 citations
,
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.
8 citations
,
March 2023 in “PubMed” This review discusses JAK inhibitors as promising new treatments for various chronic dermatologic conditions, including some recent drug approvals, and reports no new clinical results.
7 citations
,
April 2023 in “Frontiers in immunology” This source reports that a network meta-analysis found oral baricitinib and ruxolitinib to be effective and safe for treating alopecia areata, significantly improving response rates over placebos and showing fewer adverse effects than steroid treatments, though precise dosing needs further study.
7 citations
,
May 2025 in “Journal of Biomedical Science” This study found that KRT6A expression increases after epidermal barrier disruption, worsening skin inflammation in disease conditions, and suggests that targeting KRT6A could offer a new treatment approach for inflammatory skin diseases linked to epidermal dysfunction.
7 citations
,
September 2024 in “The Journal of Dermatology” This study evaluated the effectiveness and safety of ritlecitinib in patients aged 12 or older with alopecia totalis or universalis, finding higher hair regrowth response rates compared to placebo at 24 weeks, with continued improvement and acceptable safety through 48 weeks.
6 citations
,
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.
6 citations
,
November 2022 in “Journal of autoimmunity” This case report discusses a successful treatment of Alopecia Areata with tofacitinib and includes a literature review on the condition's pathophysiology and the mechanism of JAK inhibitors, though it notes the high failure rate of available treatments and absence of FDA-approved options.
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.
4 citations
,
July 2023 in “Nature Medicine” The FDA approved a new Pfizer drug for hair loss in teens.
4 citations
,
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.
4 citations
,
January 2020 in “PubMed” This source reports that JAK inhibitors, such as ruxolitinib, baricitinib, and tofacitinib, have led to hair regrowth in alopecia areata patients and animal models, but their long-term safety and effectiveness remain uncertain, with ongoing trials to further investigate these factors.
3 citations
,
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.
3 citations
,
April 2024 in “International Journal of Women’s Dermatology” This article discusses barriers to obtaining JAK inhibitor therapy for patients with alopecia areata and highlights that racial inequities may worsen these difficulties; it calls for further advocacy to improve access.
3 citations
,
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.
2 citations
,
March 2026 in “Journal of Dermatological Treatment” This study found that JAK inhibitors used to treat alopecia areata have varied safety profiles, with different adverse events associated with each drug; tofacitinib and ruxolitinib had earlier onset of events, while baricitinib and ritlecitinib showed distinct delayed patterns.
2 citations
,
May 2025 in “Archives of Dermatological Research” This retrospective cohort study found no significant association between Janus kinase inhibitors and increased malignancy risk in alopecia areata patients, but traditional immunosuppressants were linked to higher risks of internal and hematologic malignancies.
2 citations
,
February 2025 in “Archives of Dermatological Research” This retrospective study observed that switching from tofacitinib to baricitinib improved hair growth in patients with alopecia areata, particularly for previous non-responders, and noted fewer side effects with baricitinib.
2 citations
,
February 2025 in “Journal of the European Academy of Dermatology and Venereology” This study suggests that Janus kinase inhibitors may offer a potential treatment option for refractory lichen planopilaris and frontal fibrosing alopecia, showing positive response rates between 42% and 100%, though evidence quality is low.
2 citations
,
December 2024 in “eLife” This study observed that individuals with Down syndrome exhibit early immune dysregulation, including multi-organ autoimmunity and hypercytokinemia, and found that the JAK inhibitor tofacitinib showed a good safety profile and reduced skin pathology in a Phase II trial.
2 citations
,
May 2024 in “Expert Opinion on Drug Safety” This study found that while infectious events may occur in alopecia areata patients treated with JAK inhibitors, these infections are usually manageable and rarely lead to permanent treatment discontinuation.
2 citations
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March 2024 in “Meditsinskiy sovet = Medical Council” This review discusses the role of Janus-kinase inhibitors in treating severe atopic dermatitis and alopecia areata, presenting case studies that show their efficacy and calling for further research on long-term effectiveness and safety.