24 citations
,
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.
July 2026 in “Zenodo (CERN European Organization for Nuclear Research)” In this study, researchers focused on the "bulge region" of hair follicles, identifying Janus kinases as key players in hair growth signaling, which could inform new therapies for hair restoration.
277 citations
,
December 2019 in “Frontiers in Immunology” This review discusses the immunological basis and development of Janus kinase inhibitors for treating skin diseases and reports no new clinical findings.
September 2023 in “Journal of the American Academy of Dermatology” This study found that oral Janus kinase inhibitors were effective in treating alopecia areata, with a clinical response rate of 48.3%, though further research is needed to assess long-term effects.
March 2022 in “Journal of Pakistan Association of Dermatologists” This article reviews the mode of action, efficacy, and safety of Janus kinase inhibitors in autoimmune dermatological conditions but reports no new clinical results.
March 2026 in “Immunological Medicine” This review discusses the use of Janus kinase inhibitors for severe alopecia areata in Japan, noting their effectiveness in some patients but highlighting the need for new therapies due to non-responsiveness and relapse in others; it reports no new clinical results.
July 2025 in “Journal of Investigative Dermatology” Switching Janus kinase inhibitors helped some patients with severe alopecia areata regrow hair, but insurance issues can worsen the condition.
37 citations
,
April 2018 in “Journal of Allergy and Clinical Immunology” This study found that a novel IKZF1 mutation, p.L188V, is linked to juvenile-onset systemic lupus erythematosus and alters B-cell activation by disrupting normal DNA binding.
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.
1 citations
,
October 2025 in “Journal of Allergy and Clinical Immunology” A JAK1 variant causes hair loss, skin issues, and thyroid disease, but treatment with a specific inhibitor can help.
July 2024 in “Journal of Investigative Dermatology” In these two clinical trials, DS-2325a, a KLK5 inhibitor, was found to be generally safe and well tolerated in healthy volunteers, with mild and non-serious adverse events, suggesting its potential for further development as a treatment for Netherton Syndrome.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, researchers used a mouse model of alopecia areata to demonstrate that both ruxolitinib and baricitinib, oral JAK inhibitors, reduced hair loss, CD8+ cell infiltration, and expression of disease-related markers, with baricitinib showing greater effectiveness.
1 citations
,
May 2024 in “Pediatric Blood & Cancer” In this case study, a transition to the MEK inhibitor trametinib successfully stabilized disease and reduced toxicity in a patient with refractory kaposiform lymphangiomatosis after prolonged sirolimus and steroid treatment.
701 citations
,
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.
June 2025 in “British Journal of Dermatology” This study surveyed Irish dermatologists and found that while JAK inhibitors show promising efficacy for alopecia areata, there is significant variation in practice due to the lack of specific guidelines and long-term safety data for these treatments.
July 2026 in “Advances in Therapy” This study found that clinicians treating alopecia areata prioritize JAK inhibitor treatments with higher efficacy and faster initial hair growth, regardless of dosing frequency, and preferred the treatment option with ritlecitinib 50-mg data the least among several blinded profiles.
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.
July 2026 in “American Journal of Clinical Dermatology” In this study, oral JAK inhibitors were found to be significantly more effective than placebo in promoting hair regrowth among adults and adolescents with moderate-to-severe alopecia areata, although they were associated with an increased risk of adverse events.
June 2020 in “Dermatologic therapy” Using Janus kinase inhibitors (JAKi) in COVID-19 treatment requires careful consideration due to their immunosuppressive effects.
December 2025 in “International Journal of Innovative Technologies in Social Science” This systematic review concluded that oral JAK inhibitors, such as baricitinib and deuruxolitinib, are effective and generally well-tolerated treatments for moderate-to-severe alopecia areata, offering advantages over traditional therapies.
June 2025 in “Revista Foco” This review assessed randomised clinical trials on the efficacy and safety of topical and systemic JAK inhibitors for alopecia areata, finding significant hair coverage improvement with ritlecitinibe and baricitinibe, though prolonged treatment is often needed to maintain results.
1 citations
,
September 2025 in “JAAD reviews.” This review discusses the condition alopecia areata and summarizes its available treatments, mentioning three recently approved Janus kinase inhibitors, but reports no new clinical results.
April 2020 in “The FASEB journal” In in-vitro experiments, this study found that poncirin showed higher inhibitory activity against JAK3 than tofacitinib, suggesting potential for alopecia areata treatment.
12 citations
,
June 2023 in “JAMA network open” In this study of seven randomized clinical trials, JAK inhibitors were associated with improved hair regrowth outcomes in alopecia areata patients compared to placebo, with oral administration being more effective than external application, though longer trials are needed to confirm safety and effectiveness.
July 2026 in “Journal of the American Academy of Dermatology” JAK inhibitors are generally safe for treating alopecia areata.
January 2026 in “Medicina” This review found that oral JAK inhibitors, used off-label in various inflammatory skin disorders, often resulted in rapid and sustained clinical improvements with acceptable safety over several months, although the evidence is drawn from case-based reports.
20 citations
,
January 2024 in “Journal of the European Academy of Dermatology and Venereology” This study conducted a meta-analysis and found that among therapies for alopecia areata, baricitinib_4 mg was most likely to be effective, followed by ritlecitinib and ivarmacitinib, while other treatments like dupilumab and secukinumab were less effective.
April 2025 in “International Journal of Dermatology” This study found that Black patients with alopecia areata showed an average 20% reduction in scalp involvement after JAK inhibitor therapy, indicating positive treatment outcomes in this group.
September 2023 in “British Journal of Dermatology” In this study, researchers found that patients with severe alopecia areata show varied regrowth timelines with baricitinib, and those with the most severe cases may still experience delayed but eventual improvement.
July 2024 in “Journal of Investigative Dermatology” This study found that systemic treatment with DS77754007, a KLK5 inhibitor, improved skin symptoms in a mouse model of Netherton Syndrome more effectively than certain antibody treatments, suggesting KLK5 inhibition as a promising therapeutic approach for this condition.