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Glossary Janus Kinase Inhibitors

medications that block enzymes involved in immune response signaling

Janus Kinase Inhibitors, often referred to as JAK inhibitors, are a class of medications that block the activity of Janus kinases, which are enzymes involved in the signaling pathways that regulate immune responses and inflammation. By inhibiting these enzymes, JAK inhibitors can help manage conditions like rheumatoid arthritis, psoriasis, and certain types of alopecia, where the immune system mistakenly attacks the body's own tissues.

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Research

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research Efficacy and safety of deuruxolitinib, an oral selective Janus kinase 1/2 inhibitor, in adults with alopecia areata: Results from the THRIVE-AA2 Phase 3, randomized, double-blind, controlled trial

2 citations , November 2025 in “Journal of the American Academy of Dermatology”

In this randomized, placebo-controlled trial, adults with severe chronic alopecia areata who received deuruxolitinib showed significant hair regrowth compared to placebo over 24 weeks, and the treatment was generally well-tolerated, though long-term effects remain unexamined.

Tofacitinib (Selective Janus Kinase Inhibitor 1 and 3): A Promising Therapy for the Treatment of Alopecia Areata: A Case Report of Six Patients

research Tofacitinib (Selective Janus Kinase Inhibitor 1 and 3): A promising therapy for the treatment of alopecia areata: A case report of six patients

24 citations , January 2018 in “International Journal of Trichology”

This study found that oral tofacitinib was effective in promoting hair regrowth in patients with alopecia universalis, although further controlled studies are recommended to confirm its safety and efficacy.

research Janus Kinase Inhibitors in Dermatology: Part 1 — General Considerations and Applications in Vitiligo and Alopecia Areata

14 citations , March 2021 in “Actas Dermo-Sifiliográficas”

This review discusses the JAK/STAT signaling pathway's role in immune-mediated skin diseases and examines the efficacy and safety of JAK inhibitors for treating vitiligo and alopecia areata, but reports no new clinical results.

research The Janus kinase 1 inhibitor abrocitinib for the treatment of oral lichen planus

7 citations , March 2023 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology”

This letter discusses the potential of the Janus kinase 1 inhibitor abrocitinib for treating oral lichen planus but provides no new research findings.

Forecasting Phase 3 Dose-Response for Abrocitinib, an Oral Janus Kinase 1 Selective Inhibitor, Using Investigator’s Global Assessment and Eczema Area and Severity Index

research 170 Forecasting Phase 3 Dose-Response for Abrocitinib, an Oral Janus Kinase 1 Selective Inhibitor, Using Investigator’s Global Assessment and Eczema Area and Severity Index

September 2019 in “Journal of Investigative Dermatology”

In this study, dose-response modeling predicted that once-daily abrocitinib doses of 100 mg and 200 mg may provide a clinically meaningful response in treating moderate-to-severe atopic dermatitis compared to placebo.

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community Is it ok to take Xeljanz (A jak inhibitor) while taking finasteride?

2 upvotes 9 years ago

The conversation is about whether it is safe to take Xeljanz, a JAK inhibitor, while also taking finasteride for hair loss. The concern is that Xeljanz weakens the immune system, which could be risky.

community What else is good. Besides the big 3.

in Chat 35 upvotes 1 year ago

Key treatments for hair preservation include minoxidil, finasteride/dutasteride, and microneedling, with additional options like specific shampoos, oils, biotin, zinc, tretinoin, clascoterone, and low-level laser therapy. Maintaining a healthy lifestyle, reducing stress, and addressing nutrient deficiencies can also support hair health.

community Novel Formulation To Put An End To Hair Loss Once And For All.

in Research/Science 118 upvotes 10 months ago

A pharmacy student proposed a hair loss treatment using minoxidil, finasteride, clascoterone, and tretinoin, aiming for high effectiveness with minimal side effects. Reactions were mixed, with some questioning its feasibility and others showing interest.

community Article of all potential future cures

25 upvotes 1 year ago

Ritlecitinib and PP405 show promise for hair regrowth. Diagnosing the cause of hair loss is crucial before treatment.

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