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.
4 citations
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November 2023 in “SKIN The Journal of Cutaneous Medicine” In this study, ritlecitinib, an oral JAK3/TEC inhibitor, was evaluated for safety in patients aged 12 and older with alopecia areata across four clinical trials up to 36 months, showing a safety profile with reported adverse events and lab abnormalities summarized per dosing groups.
19 citations
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May 2006 in “Clinical and Experimental Dermatology” This study identified a novel insertion mutation in the hairless gene that may contribute to the development of congenital atrichia with papular lesions in a Pakistani family.
6 citations
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March 2024 in “SKIN The Journal of Cutaneous Medicine” In this ongoing phase 3 study, ritlecitinib demonstrated sustained efficacy up to 24 months in patients aged 12 or older with alopecia areata, showing increased response rates with or without an initial loading dose and supporting its long-term use.
1 citations
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November 2023 in “SKIN The Journal of Cutaneous Medicine”
March 2026 in “American Journal of Clinical Dermatology” In this study, ritlecitinib 50 mg produced clinically meaningful improvements in scalp hair regrowth over three years for patients aged 12 and older with severe alopecia areata, with 65.1% showing substantial hair regrowth and 31.2% achieving complete regrowth, while also maintaining a consistent safety profile.
July 2026 in “Journal of the American Academy of Dermatology” 48 citations
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July 2023 in “Pediatric Dermatology” This study found that among adolescents with alopecia areata and significant hair loss, treatment with ritlecitinib resulted in greater hair regrowth and self-reported improvement compared to placebo over 48 weeks, with common side effects including headache, acne, and nasopharyngitis.
March 2023 in “SKIN The Journal of Cutaneous Medicine” This study observed that most patients with alopecia areata experienced sustained scalp hair regrowth after 48 weeks of ritlecitinib treatment, with safety consistent with prior findings.
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.
February 2026 in “The Journal of Dermatology” This study reports that ritlecitinib 50 mg, with or without an initial loading dose, demonstrated meaningful and sustained efficacy up to 24 months in the Asian subpopulation with severe alopecia areata, showing significant scalp, eyebrow, and eyelash hair regrowth, along with an acceptable safety profile.
December 2021 in “Benha Journal of Applied Sciences” This study found that high serum alarin levels were linked to both androgenetic alopecia and metabolic syndrome, increasing with the severity of AGA.
June 2026 in “British Journal of Dermatology” This audit of ritlecitinib prescribing for severe alopecia areata found that regional practices largely followed national guidelines but highlighted the need for better psychological assessments and more consistent use of SALT scoring to inform treatment continuation decisions after 36 weeks.
3 citations
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July 2025 in “Clinical and Experimental Dermatology” This study reported that patients with alopecia areata treated with ritlecitinib in a real-life setting had a higher rate of positive response on the Severity of Alopecia Tool score compared to those in the ALLEGRO trial.
November 2025 in “SKIN The Journal of Cutaneous Medicine” This study evaluated the long-term safety of ritlecitinib in adolescents with alopecia areata and found it to be well-tolerated without new safety concerns over approximately five years, with common adverse events including positive SARS-CoV-2 tests, acne, headache, and nasopharyngitis.
3 citations
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January 2013 in “Dermatology” This study identified novel compound heterozygous mutations in the hairless gene among a non-consanguineous Chinese family with congenital atrichia, illustrating phenotypic variations due to founder or modifier genes.
2 citations
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January 2023 in “Dermatology Practical & Conceptual” This study found that patients with alopecia areata had a higher frequency of the AB+ blood group compared to healthy controls.
January 2025 in “Turkish Journal of Cerebrovascular Diseases” This case report details two consanguineous patients with cerebral autosomal recessive arteriopathy, both having the same HTRA1 gene mutation, but exhibiting different clinical presentations, including one with epileptic seizures and lobar hemorrhages—previously undocumented in this condition.
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.
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.
May 2026 in “Journal of Medicinal Chemistry” In this study, the authors developed a novel PROTAC named dAR-6–1, which demonstrated superior hair regeneration in an AGA mouse model compared to minoxidil, highlighting its promise as a therapy due to potent AR degradation and excellent skin permeability.
4 citations
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March 2025 in “The Journal of Dermatology” This study found that in Asian patients aged 12 and older with alopecia areata and significant hair loss, ritlecitinib showed clinical efficacy in improving hair regrowth and eyebrow and eyelash scores over 48 weeks, with an acceptable safety profile observed throughout.
3 citations
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January 2019 in “Skin Appendage Disorders” This review of 32 articles suggests a stronger association between alopecia areata and allergic rhinitis than asthma in both adults and children, indicating a potential Th2-mediated component.
2 citations
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October 2000 in “Journal of Investigative Dermatology” AUC and APL are distinct conditions needing careful clinical assessment.
1 citations
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June 2022 in “Experimental dermatology” This study found that SHJH hr mice, with a Hairless gene mutation, exhibit accelerated skin aging potentially due to poor antioxidative protection, highlighting the Hr gene's role in skin aging.
April 2023 in “Journal of Investigative Dermatology” In this study, a novel AR protein degrader was shown to reverse DHT-induced hair regrowth delay in a mouse model of androgenetic alopecia, with minimal circulation and potential side effects.
November 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that engineered high-affinity soluble CD200R agonists, including ARQ-234, showed superior efficacy in reducing immune responses in various preclinical models of inflammatory conditions, suggesting potential as a therapeutic for atopic dermatitis and other related diseases.
December 2024 in “CONICET Digital (CONICET)” This study found that the small signaling peptide RALF22 plays a key role in root hair growth response to volatile compounds emitted by Penicillium aurantiogriseum through ethylene, auxin, and photosynthesis signaling in Arabidopsis.
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.
April 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” In this study, researchers identified a gene regulatory network in Arabidopsis that controls root hair growth under low-temperature conditions, revealing specific transcription factors and downstream targets that contribute to this growth response despite overall plant development being halted.