June 2025 in “Acta Dermato Venereologica” Low-dose Ritlecitinib may help children with stubborn Alopecia Areata.
November 2024 in “SKIN The Journal of Cutaneous Medicine” This study found that daily treatment with ritlecitinib 50 mg over 24 months reduced the number of patients in the highest categories of scalp hair loss, with improvements seen in patient responses over time.
April 2019 in “Journal of Investigative Dermatology” This study identifies a mechanism where dsRNA activates TLR3 to induce RA production, promoting hair follicle regeneration in mice and suggesting a potential role in human tissue regeneration.
June 2026 in “British Journal of Dermatology” This study evaluated the real-world use of ritlecitinib for severe alopecia areata in the UK, reporting that 37% of patients achieved significant hair regrowth by week 36, with no serious adverse effects noted, although response varied with disease duration.
15 citations
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January 2025 in “Journal of the European Academy of Dermatology and Venereology” Ritlecitinib is effective and safe for treating alopecia areata, promoting significant hair regrowth.
January 2025 in “Clinical Dermatology Review” In this case report, a 16-year-old female with Netherton syndrome, a rare genetic disorder, exhibited symptoms such as skin issues, hair abnormalities, and elevated serum IgE levels. The diagnosis was supported by skin biopsy, and treatment included topical therapies, NB-UVB, and infliximab.
1 citations
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November 2024 in “Cureus” This case report describes a rare aggressive variant of squamous cell carcinoma on the scalp of a non-immunosuppressed older male, highlighting its high biological risk for metastasis and poor outcomes.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that treatment with ritlecitinib led to significant scalp hair regrowth in patients with alopecia areata at Weeks 24 and 48, with higher response rates observed in those receiving 50 mg compared to 30 mg doses.
March 2021 in “Research Square (Research Square)” This study found that strontium ranelate may promote cartilage regeneration by enhancing chondrogenic differentiation and inhibiting the Wnt/β-catenin signaling pathway in rat models of cartilage defects.
35 citations
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May 2019 in “Frontiers in genetics” This study reported that specific non-coding RNAs may regulate the hair follicle cycle in Angora rabbits by acting as competitive endogenous RNAs, enhancing understanding of ncRNA roles in hair growth.
October 2025 in “Dermatology and Therapy” This study evaluates the efficacy and safety of a higher dose (100-mg) of ritlecitinib for treating severe alopecia areata, comparing it to external and synthetic placebo control groups.
2 citations
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March 2019 in “Journal of Histochemistry and Cytochemistry” This study found that NNAT is localized in both undifferentiated and differentiated cells across various rat tissues and has cell-specific intracellular localization, suggesting distinct functional roles.
November 2025 in “SKIN The Journal of Cutaneous Medicine” In this study, nearly one-third of patients with severe alopecia areata treated with ritlecitinib achieved complete scalp hair regrowth at least once over three years, and most maintained regrowth or stayed at low hair loss levels subsequently.
May 2025 in “International Journal of Trichology” This case report highlights a 7-year-old boy with suspected Netherton syndrome who presented with itchy lesions, hair abnormalities, and elevated immunoglobulin E levels. The authors report complete resolution of symptoms with oral Acitretin after failed methotrexate treatment.
9 citations
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March 2022 in “Journal of radiation research” This study identified specific profiles and courses of adverse events associated with boron neutron capture therapy for head and neck cancer, suggesting differences based on the beam incidence site.
December 2023 in “Journal of Ayub Medical College Abbottabad” In this study, Ritlecitinib was reported as a newly approved treatment for alopecia areata that can be used in patients aged 12 and older; after 24 weeks, it resulted in 80% or more scalp hair coverage in treated patients compared to a placebo.
June 2026 in “Dermatology and Therapy” This study reported that ritlecitinib was prescribed to a diverse group of patients with severe alopecia areata in the first 10 months after FDA approval, indicating its potential role in AA management.
February 2026 in “International Journal of Dermatology” In a single-center study, adolescents with moderate-to-severe alopecia areata treated with ritlecitinib 50 mg daily for 24 weeks showed significant hair regrowth, with 27.3% achieving near-complete regrowth and 45.5% substantial improvement, without serious safety concerns, according to these researchers.
September 2009 in “European Urology Supplements” This study demonstrates that a new Adaptive Modulation and Coding method can improve control performance in Communication-Based Train Control systems using WLAN by reducing average delay through effective transmission mode selection.
4 citations
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April 2020 in “Dermatology practical & conceptual” This review outlines the practical use of reflectance confocal microscopy in dermatology, detailing its applications and considerations for diagnosing various skin conditions, but reports no new findings.
July 2026 in “Journal of the American Academy of Dermatology”
This study found that proretinal nanoparticles, applied topically, are safe and effective for penetration into hair follicles, enhancing retinoid biological activity in the skin while reducing irritation compared to conventional retinal formulations.
21 citations
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April 2008 in “Toxicologic Pathology” This study found that CI-1033 caused skin lesions in rats that resemble effects seen in humans receiving EGF receptor inhibitors, suggesting this animal model can help explore the mechanisms behind this cutaneous toxicity.
January 1993 in “Claves de razón práctica” This study found that ROR2 plays a crucial role in the regulation of hair follicle stem cell self-renewal and maintenance, particularly by compensating for the absence of β-catenin.
June 2026 in “British Journal of Dermatology” In this study, real-world data of 31 patients using ritlecitinib for severe alopecia areata showed that 51% achieved significant hair regrowth after one year, with no serious adverse events reported, emphasizing the importance of considering treatment duration for response.
1 citations
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August 2024 in “British Journal of Dermatology” This study found that after 15 months of treatment with ritlecitinib, patients with alopecia areata and less than 95% initial hair loss experienced significant hair regrowth, though those with more extensive hair loss showed more variable improvement.
November 2025 in “SKIN The Journal of Cutaneous Medicine” This study observed that adolescents with alopecia areata receiving ritlecitinib 50 mg daily showed notable hair regrowth over three years, as seen in both clinician- and patient-reported outcomes. However, the decreased number of participants at later stages limits the findings.
2 citations
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June 2024 in “Dermatology” This study found that patients receiving active ritlecitinib doses reported greater satisfaction with hair growth compared to placebo, with high agreement observed between clinician evaluations of scalp hair improvement and patient satisfaction through week 48.
1 citations
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July 2025 in “SKIN The Journal of Cutaneous Medicine” In this study, ritlecitinib 50-mg showed clinically meaningful efficacy, with improvements in the Severity of Alopecia Tool score observed in patients with alopecia areata over a 3-year period, demonstrating long-term benefit in both clinician- and patient-reported outcomes.
November 2023 in “SKIN The Journal of Cutaneous Medicine” This study assessed ritlecitinib's effects on sustained hair regrowth in patients with alopecia areata who showed improvement at 24 weeks, confirming ongoing benefits through 48 weeks for scalp, eyebrow, and eyelash hair regrowth in this post hoc analysis.