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This study observed that patients with acute alopecia areata treated with Janus kinase inhibitors achieved a higher rate of complete hair regrowth by week 24 compared to those with non-acute disease, highlighting the benefits of early intervention.

This review highlights emerging evidence that chemotherapy-induced alopecia may be driven by immune mechanisms similar to alopecia areata, involving hair follicle immune privilege collapse, and evaluates Janus kinase inhibitors as potential treatments, while cautioning about their immunosuppressive risks in cancer patients.

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.

This review concluded that JAK inhibitors are effective in achieving meaningful hair regrowth in moderate to severe alopecia areata, although continuous therapy is often needed to maintain the benefits.

This review highlights that JAK inhibitors have transformed severe alopecia areata treatment by disrupting disease signaling, emphasizing the need for strategies to address non-responders and manage treatment discontinuation.

In this study using a mouse model with alopecia areata, the researchers found that ruxolitinib enhances hair regrowth by inhibiting the JAK-STAT signaling pathway, reducing inflammation and oxidative stress, and decreasing apoptosis, which supports its clinical effectiveness in treating this condition.

This article highlights the rising interest in Janus kinase inhibitors for alopecia areata, especially following the FDA approval of baricitinib, underscoring the need for better patient education and physician guidance in selecting appropriate treatments for hair loss.

This case series described five patients with chronic alopecia areata who successfully maintained long-term disease control using a combination of topical immunotherapy and other treatments over 9–15 years, highlighting the approach's continued value alongside novel therapies.

Using molecular dynamics simulations, this study explored the uptake processes of JAK inhibitors on stratum corneum and hair follicle membranes, revealing a unique interaction mechanism in the hair follicle and offering insights into transdermal drug delivery pathways.

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.

This study identified a four-gene loop as a non-invasive biomarker that selectively activates in alopecia areata, providing a precise target for JAK inhibitor treatments.

This study conducted a survey among consultant dermatologists in Ireland to explore their use of JAK inhibitors for treating alopecia areata, acknowledging challenges posed by the lack of global guidelines and long-term safety data.

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.

In this case report, a 37-year-old patient with APECED showed significant clinical improvement, including hair regrowth and resolution of skin issues, after 11 months of treatment with ruxolitinib, highlighting the potential of JAK inhibitors in managing this complex autoimmune disease.

Combining MMP-9 and JAK inhibitors can effectively prevent skin depigmentation in vitiligo.

In this study, the researchers using Shh-GFP^+/- mice found that cyclophosphamide-induced alopecia involves the JAK/STAT1 pathway, where STAT1 binds the Shh gene promoter, decreasing Shh-expressing cells in hair follicles. Treatment with JAK inhibitors helped rescue hair loss, implicating the JAK/STAT1 pathway in this process.

This study reviewed a corticosteroid treatment regimen for a 52-year-old woman with extensive alopecia areata, showing significant hair regrowth and sustained remission over 12 months, suggesting oral mini-pulse therapy as a viable alternative for those ineligible for JAK inhibitors.

This study observed that JAK inhibitors were effective and safe for treating alopecia totalis and universalis, with improved response rates seen most with ritlecitinib and tofacitinib by week 24.

This study observed that JAK inhibitors were safe and effective for patients with moderate-to-severe alopecia areata and comorbid latent hepatitis B or stable tuberculosis, with careful monitoring and selective prophylaxis.

This study observed that JAK inhibitor therapy may be safely administered to patients with alopecia areata and latent HBV or stable TB, without reactivation of these infections, when appropriate monitoring and prophylaxis are used.

This study found that the JAK1 inhibitors baricitinib and abrocitinib significantly reduced mechanical alloknesis in a murine model of atopic dermatitis, whereas the JAK2 inhibitor AZ960 had no effect.

Lasheras-Pérez et al. reported that JAK3 and TYK2 proteins are activated in certain forms of primary cicatricial alopecia, suggesting the JAK/TYK/STAT pathway as a potential therapeutic target for these conditions.

Baricitinib can help improve hair loss and skin color issues in people with Down syndrome.

Some JAK inhibitors are effective for significant hair regrowth in alopecia areata.

Ritlecitinib may help treat alopecia areata by protecting hair follicles.

In this review, researchers explore evidence showing that JAK inhibitors, particularly baricitinib and deuruxolitinib, are effective in promoting hair regrowth in severe alopecia areata while maintaining acceptable safety profiles, though long-term data remains scarce.

This review reports that three JAK inhibitors—baricitinib, ritlecitinib, and deuruxolitinib—have gained FDA approval for treating alopecia areata due to their demonstrated efficacy in fostering hair regrowth in clinical trials.

Baricitinib stops hair loss and promotes regrowth in alopecia areata.

This study reviewed clinical trials on JAK inhibitors for alopecia areata, finding them effective for short-term hair regrowth with a favorable safety profile, but noted limited data on long-term risks like malignancies or cardiovascular events beyond two years.

This review discusses the role of JAK inhibitors in treating alopecia areata by targeting the JAK/STAT pathway and highlights the promising results but also ongoing challenges such as relapse risk and side effects.