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Janus kinase inhibitors

Janus kinase inhibitors (JAK inhibitors, or JAKis) are a class of targeted anti-inflammatory and immunomodulatory therapies that block signaling through the Janus kinase–signal transducer and activator of transcription (JAK-STAT) pathway.

Where the papers sit

14 papers from the last 6 months study janus kinase inhibitors directly · updated from PubMed 3 Oct 2026

Study type 0 clinical trials · 6 observational · 3 human data · 5 unclassified

Themes 3 themes · 1 new direction

  • Real-World JAK Inhibitor Use

    Clinical use is being assessed across inflammatory disease, systemic sclerosis, myelofibrosis and post-infectious hyperinflammation. Longitudinal response, flare patterns, treatment duration and infection remain recurring outcomes. Combination therapy, including biologic-JAK inhibitor regimens, is being explored for refractory systemic autoinflammatory disease. Evidence remains disease-specific rather than convergent, leaving comparative effectiveness and long-term safety open.

    5 papers · 35.7%

  • Rheumatoid Arthritis JAK Outcomes

    Rheumatoid arthritis care is shifting toward treatment-aware selection of JAK inhibitors against biologics such as sarilumab. Observational studies repeatedly examine effectiveness, discontinuation, glucocorticoid use and acute coronary events across tofacitinib, filgotinib and upadacitinib. Risk appears dependent on age, baseline characteristics and treatment context rather than drug exposure alone. Better cardiovascular stratification and durable comparative data remain open needs.

    5 papers · 35.7%

  • Alopecia Areata Treatment Choices

    Treatment selection in alopecia areata is moving toward comparisons of ritlecitinib, baricitinib and tofacitinib across disease severity and age groups. Response differs between acute and nonacute disease, while paediatric studies add real-world safety data. Patients and clinicians weigh efficacy, speed of response, safety and treatment attributes differently. These findings support individualized JAK inhibitor choice, but comparative long-term outcomes remain limited.

    4 papers · 28.6%

NEW DIRECTION

JAK inhibition is presented as rescue treatment for severe immune-checkpoint-inhibitor toxicity

The rapid response on severe immune-related adverse events associated with immune checkpoint inhibitors presents Janus kinase inhibitors as treatment for steroid-refractory or life-threatening immunotherapy toxicity, rather than as therapy for the underlying inflammatory diseases represented elsewhere in the set 42031428Apr. Although JAK inhibition was assumed to risk weakening interferon-mediated antitumor immunity, the reported prospective cohort achieved clinical remission in 70.8% of patients, including those with myocarditis and inflammatory arthritis, without an apparent excess of opportunistic infections. This assigns JAK inhibitors a new role in controlling complications of cancer immunotherapy, while leaving thromboembolic risk and possible effects on tumor control for further study.

Papers

The 14 papers from the last 6 months that study janus kinase inhibitors directly, newest first, by theme and by study type. Study types come from PubMed publication types and MeSH headings.

By theme

Real-World JAK Inhibitor Use (5)
  1. Biologic-biologic and biologic-JAK inhibitor combination therapy in refractory systemic autoinflammatory diseases. Seminars in arthritis and rheumatism · 3 Sept 2026 PMID 42691741
  2. Cytokine-Driven Hyperinflammation in Long COVID: Mechanisms, Biomarkers, Complement Dysregulation, and Emerging Immunotherapies-A Narrative Review. Health science reports · 27 Aug 2026 PMID 42657238
  3. Longitudinal clinical response to Janus kinase inhibitors in systemic sclerosis: a real-life multicentric study across multiple clinical domains. Clinical rheumatology · 30 May 2026 PMID 42217099
  4. A 52-Week Retrospective Italian Study of Flare Characteristics in Adult Atopic Dermatitis Patients Receiving JAK Inhibitors. International journal of dermatology · 15 May 2026 PMID 42138359
  5. Real-world patient characteristics and clinical outcomes in patients with myelofibrosis in Japan. PloS one · 8 May 2026 PMID 42102170
Rheumatoid Arthritis JAK Outcomes (5)
  1. Factors associated with the effectiveness and safety of Janus kinase inhibitors in rheumatoid arthritis: an 8-year observational study from the JAGUAR Registry. RMD open · 31 Aug 2026 PMID 42674814
  2. Factors associated with discontinuation of bDMARDs and JAK inhibitors in patients with rheumatoid arthritis: a retrospective study. Clinical rheumatology · 13 Aug 2026 PMID 42587227
  3. Janus kinase inhibitor exposure and acute coronary event patterns in rheumatoid arthritis: a treatment-aware retrospective study. Clinical rheumatology · 24 Jul 2026 PMID 42498889
  4. Comparative effectiveness and safety of sarilumab vs Janus kinase inhibitors in late- and younger-onset rheumatoid arthritis. Rheumatology (Oxford, England) · 9 Jun 2026 PMID 42261260
  5. Rapid response: Context-dependent immunomodulatory effects of JAK inhibition in the management of severe immune-related adverse events. Journal for immunotherapy of cancer · 24 Apr 2026 PMID 42031428
Alopecia Areata Treatment Choices (4)
  1. Real-World Outcomes and Safety of JAK Inhibitors in Paediatric Alopecia Areata: A Retrospective Multicentre Study. The Australasian journal of dermatology · 5 Aug 2026 PMID 42552762
  2. A Discrete Choice Experiment of Clinician Preferences Among Attributes of Approved Janus Kinase Inhibitors for Alopecia Areata. Advances in therapy · 20 Jul 2026 PMID 42474702
  3. Comparative Efficacy of JAK Inhibitors in Acute vs Nonacute Alopecia Areata: A Retrospective Cohort Study. Acta dermato-venereologica · 26 May 2026 PMID 42186168
  4. Patient preferences for treatment characteristics of Janus kinase inhibitors for alopecia areata: a discrete choice experiment. The Journal of dermatological treatment · 15 May 2026 PMID 42138161

By study type

Observational studies and case reports (6)
  1. Biologic-biologic and biologic-JAK inhibitor combination therapy in refractory systemic autoinflammatory diseases. Seminars in arthritis and rheumatism · 3 Sept 2026 PMID 42691741
  2. Factors associated with the effectiveness and safety of Janus kinase inhibitors in rheumatoid arthritis: an 8-year observational study from the JAGUAR Registry. RMD open · 31 Aug 2026 PMID 42674814
  3. Factors associated with discontinuation of bDMARDs and JAK inhibitors in patients with rheumatoid arthritis: a retrospective study. Clinical rheumatology · 13 Aug 2026 PMID 42587227
  4. Janus kinase inhibitor exposure and acute coronary event patterns in rheumatoid arthritis: a treatment-aware retrospective study. Clinical rheumatology · 24 Jul 2026 PMID 42498889
  5. Comparative Efficacy of JAK Inhibitors in Acute vs Nonacute Alopecia Areata: A Retrospective Cohort Study. Acta dermato-venereologica · 26 May 2026 PMID 42186168
  6. Real-world patient characteristics and clinical outcomes in patients with myelofibrosis in Japan. PloS one · 8 May 2026 PMID 42102170
Human data, design not indexed (3)
  1. A Discrete Choice Experiment of Clinician Preferences Among Attributes of Approved Janus Kinase Inhibitors for Alopecia Areata. Advances in therapy · 20 Jul 2026 PMID 42474702
  2. Patient preferences for treatment characteristics of Janus kinase inhibitors for alopecia areata: a discrete choice experiment. The Journal of dermatological treatment · 15 May 2026 PMID 42138161
  3. Rapid response: Context-dependent immunomodulatory effects of JAK inhibition in the management of severe immune-related adverse events. Journal for immunotherapy of cancer · 24 Apr 2026 PMID 42031428
Unclassified: not yet indexed with MeSH (5)
  1. Cytokine-Driven Hyperinflammation in Long COVID: Mechanisms, Biomarkers, Complement Dysregulation, and Emerging Immunotherapies-A Narrative Review. Health science reports · 27 Aug 2026 PMID 42657238
  2. Real-World Outcomes and Safety of JAK Inhibitors in Paediatric Alopecia Areata: A Retrospective Multicentre Study. The Australasian journal of dermatology · 5 Aug 2026 PMID 42552762
  3. Comparative effectiveness and safety of sarilumab vs Janus kinase inhibitors in late- and younger-onset rheumatoid arthritis. Rheumatology (Oxford, England) · 9 Jun 2026 PMID 42261260
  4. Longitudinal clinical response to Janus kinase inhibitors in systemic sclerosis: a real-life multicentric study across multiple clinical domains. Clinical rheumatology · 30 May 2026 PMID 42217099
  5. A 52-Week Retrospective Italian Study of Flare Characteristics in Adult Atopic Dermatitis Patients Receiving JAK Inhibitors. International journal of dermatology · 15 May 2026 PMID 42138359