July 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ritlecitinib helps regrow hair in alopecia areata and is safe for long-term use.
September 2015 in “International Society of Hair Restoration Surgery” This project by the International Society of Hair Restoration Surgery aims to define best practices in hair restoration surgery but does not report new clinical findings.
July 2025 in “Zenodo (CERN European Organization for Nuclear Research)” Ritlecitinib helps regrow hair in alopecia areata and is safe for long-term use.
June 2026 in “Journal of health economics and outcomes research” In this study, researchers found that ritlecitinib 50 mg offered a lower cost per responder than baricitinib 2 or 4 mg at both 24 and 52 weeks for treating severe alopecia areata, suggesting potential implications for reimbursement or formulary decisions.
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.
August 2024 in “Journal of Personalized Medicine” In this study using a rabbit model, higher incidences of intraoperative floppy iris syndrome were observed in animals given the α-blocker tamsulosin, suggesting a potential association with increased iris billowing during eye surgery.
23 citations
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September 2020 in “BMC Cancer” This retrospective cohort study found that patients using 5α-reductase inhibitors had reduced bladder cancer-related mortality compared to nonusers, with no significant effect on bladder cancer recurrence or upper tract urothelial carcinoma mortality.
6 citations
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January 2018 in “Pharmacoepidemiology and Drug Safety” In this study, 5-α reductase inhibitors were not significantly linked to increased rhabdomyolysis risk, but they may raise the risk of myopathy and myositis in men aged 66 and older.
January 2025 in “The Journal of Dermatology” This study found that patients with severe alopecia areata are willing to accept increased risks of serious infection, cancer, and blood clots when opting for a higher dose of ritlecitinib, valuing the potential for greater hair regrowth efficacy compared to a lower dose.
July 2026 in “Journal of the American Academy of Dermatology” July 2026 in “Journal of the American Academy of Dermatology” Ritlecitinib helps adolescents with severe alopecia areata regrow scalp hair and normalize body hair and nails.
January 2023 in “Brazilian Journals Editora eBooks”
July 2025 in “The Journal of Dermatology” This study identified common and unexpected adverse events associated with ritlecitinib in real-world use, providing insights into its safety profile for treating severe alopecia areata.
6 citations
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November 2023 in “Clinical Pharmacokinetics” This research discusses the parallel clinical development of ritlecitinib, an oral Janus kinase 3/tyrosine kinase inhibitor, for treating conditions such as alopecia areata, vitiligo, ulcerative colitis, Crohn's disease, and rheumatoid arthritis. Results are not reported in the abstract.
December 2018 in “Actas urológicas españolas” This study reported that cognitive biopsy diagnosed prostate cancer in 44% of patients with at least one previous negative biopsy, with higher detection rates in lesions classified as PI-RADS 4 and 5.
1 citations
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November 2025 in “American Journal of Clinical Dermatology” This study reports that long-term treatment with ritlecitinib is generally well tolerated for up to approximately five years in patients aged 12 and older with alopecia areata, with the safety profile aligning with previous data from the ALLEGRO clinical trials.
1 citations
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July 2022 in “Cancer Epidemiology, Biomarkers & Prevention” This commentary discusses how recent shifts in prostate cancer screening and management may render 5-alpha reductase inhibitors irrelevant for chemoprevention, despite evidence of their long-term safety and effectiveness in preventing low-grade prostate cancer.
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.
March 2026 in “Journal of Clinical Oncology” In this study, pre-treatment with 5-α-reductase inhibitors (finasteride/dutasteride) in patients with metastatic renal cell carcinoma was associated with better immune checkpoint inhibitor effectiveness and improved progression-free and overall survival, without increasing severe side effects.
January 2023 in “Editora Enterprising eBooks” This article presents a collection of interdisciplinary studies by Brazilian researchers that address various societal issues to contribute to the nation's social and scientific development; it reports no new results.
September 2024 in “Annals of Medicine and Surgery” In this review, the authors highlight the FDA approval of Ritlecitinib, the first oral treatment specifically for moderate to severe alopecia areata in patients aged 12 and older, marking a significant advancement in managing this condition.
March 2023 in “Translational Andrology and Urology” This review discusses the pharmacology of 5-alpha reductase inhibitors, their expanding clinical indications beyond benign prostatic hyperplasia, and notes unresolved claims about their potential role in SARS-CoV-2.
3 citations
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May 2014 in “Urologia Journal” This review discusses how 5α-reductase inhibitors affect PSA levels in benign prostatic hyperplasia treatment and their role in prostate cancer screening, but reports no new clinical findings.
June 2026 in “Journal of health economics and outcomes research” This study found that ritlecitinib 50 mg offered a lower cost per responder than baricitinib 2 or 4 mg for treating severe alopecia areata at Weeks 24 and 52, potentially influencing reimbursement decisions.
13 citations
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February 2025 in “Journal of the European Academy of Dermatology and Venereology” Ritlecitinib shows promise for treating alopecia areata, especially with early and extended treatment.
29 citations
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September 2014 in “Current Opinion in Endocrinology, Diabetes and Obesity” This review discusses the efficacy and safety of 5-alpha reductase inhibitors for treating androgenetic alopecia, noting concerns about sexual side effects, which are typically uncommon and often resolve over time.
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 “SKIN The Journal of Cutaneous Medicine” This study reported that ritlecitinib was generally well tolerated over 72 months in patients aged 12 and older with alopecia areata, with adverse events like headache and nasopharyngitis observed, and safety outcomes consistent with previous studies.
23 citations
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October 2024 in “British Journal of Dermatology” In this study, ritlecitinib showed sustained effectiveness and a favorable safety profile in treating alopecia areata in patients aged 12 and older over 24 months, with improvements observed in hair and eyebrow regrowth and patient satisfaction.
November 2024 in “Skin Appendage Disorders” This review provides insights and guidelines for clinicians and patients on assessing the risks and benefits of ritlecitinib for adolescents with alopecia areata, emphasizing shared decision-making and management strategies.