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JAK/TYK2

Factors Affecting Biologic Use in Rheumatoid Arthritis

A San Francisco Rheumatoid Arthritis Panel cohort survey between 1999–2011, showed numerous sociodemographic, disease, and health characteristics that influenced the initiation of treatment with biologic agents for rheumatoid arthritis (RA).

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CKD & Osteoporosis Rx Revisited (7.25.2025)

Dr. Jack Cush reviews the news, journal and FDA updates from this past week on RheumNow.com.

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Zasocitinib (Tyk2 Inhibitor) Efficacy in Psoriatic Arthritis A highly selective, tyrosine kinase 2 inhibitor zasocitinib (TAK-279), was studied in a phase 2b trial and found to be effective and safe patients with active psoriatic arthritis (PsA). https://t.co/HB0eVLLAh6 https://t.co/5Kqopaw6wL
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10-20% of IBD pts have IBD-assoc. spondyloarthritis, as either peripheral arthritis or axial Dz, subclinical gut inflammation w/ IL-23–IL-17–TNFα playing central roles. TNFi & JAKi Rx is effective, but IL-17i may exacerbate IBD (vedolizumab??) Review here>> https://t.co/EL0sL2M3YX
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NHANES, Numbers, & Risk (7.18.2025)

Dr. Jack Cush reviews the news and journal reports from this past week on RheumNow.com along with interesting case questions from "Ask Cush Anything".

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Zasocitinib (Tyk2 Inhibitor) Efficacy in Psoriatic Arthritis

A highly selective, tyrosine kinase 2 inhibitor zasocitinib (TAK-279), was studied in a phase 2b trial and found to be effective and safe patients with active psoriatic arthritis (PsA).

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Manifestations and Treatment in Relapsing Polychondritis

A large multicenter cohort study of Relapsing Polychondritis (RP) describes the clinical manifestations and treatment approaches to this rare, heterogeneous, multisystem disease

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Variability of Guidelines on the Perioperative Use of DMARDs in Rheumatic Diseases Patients

More effective treatments in patients with rheumatic diseases have resulted in less need for major surgery, yet a substantial number of RMD patients will undergo surgery often in the setting of DMARDs use. A scoping review looked at numerous clinical practice guidelines/recommendations for the

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10-20% of IBD pts have IBD-assoc. spondyloarthritis, as either peripheral arthritis or axial Dz, subclinical gut inflammation w/ IL-23–IL-17–TNFα playing central roles. TNFi & JAKi Rx is effective, but IL-17i may exacerbate IBD (vedolizumab??) Review here>> https://t.co/kNIAi55Y7z
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RABBIT (German biologics register) study shows overall small increase in malignancy w/ JAKi vs bDMARDs. Risks greatest in those ≥ 60 yrs, w/ Hi Dz activity, on ≥3 prior csDMARDs. 2285 JAKi vs 4259 bDMARDs: 88 vs 135 malignancies CAs (IRs 11.6 vs 8.9; adj HR 1.40). JAKi risk https://t.co/PRn0G94CB0
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Hmmm Really? (7.11.2025)

Dr. Jack Cush reviews the news and journal reports from this past week - some obvious, other new thoughts and some - hmmm, reallly?

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Case–control study RA pts > 65yrs in US. SEER (cancer) database (2014–2019). Overall cancer risk not associated with use of JAKi (adjOR 1.04), TNFi (0.98) or other bDMARDs (0.98). But, JAKi use was assoc w/ incr risk of lung CA (OR 1.40), esp in Males (2.12) & >2 yrs JAKi. Lower https://t.co/u2psafyN1I
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Overview of the VEXAS Syndrome

A current systematic review in Rheumatology addresses the clinical features seen in the VEXAS syndrome.

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Immunomodulators in the Treatment of Autoimmune Hepatitis

EurekAlert!

Autoimmune hepatitis (AIH) is a chronic, progressive inflammatory liver disease driven by autoimmune mechanisms, characterized by elevated serum aminotransferases, hypergammaglobulinemia, and interface hepatitis on histology. With an annual global incidence of 1.37 per 100,000, AIH can lead

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Review of 104 irAE pts rx w/ JAK inhib. (82% tofacitinib). Checkpoint inhib was for Lung (20%), gastric (17%) & melanoma (16%). JAKi indications: myocarditis (70%), myositis (33%), hepatitis (24%). JAKi potentially effective esp in irAE pts unresponsive to cytokine Rx. https://t.co/8ezpAOzpRh
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ICYMI: Channeling Bias and Cancer Risk with Biologic or Targeted Synthetic DMARDs

A retrospective US administrative claims cohort study of RA patients on tumor necrosis factor inhibitors (TNFis), non-TNFi biologics, or Janus kinase inhibitors (JAKis) found a statistically significantly higher risk of incident cancer in patients receiving rituximab, abatacept, or JAKis (

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ICYMI: AGA Guideline: Prevention and Treatment of Hepatitis B Virus Reactivation in At-Risk Individuals

The American Gastroenterology Association has published its revised clinical practice guidelines for the prevention and treatment of hepatitis B virus (HBV) reactivation in at-risk patients, particularly those with immune-mediated disease, receiving immunomodulatory therapy and steroids.

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ICYMI: Combination treatments in Psoriatic Arthritis

Despite the advances in the treatment of PsA with biologic (bDMARD) and targeted synthetic (tsDMARD), less than half of patients with this condition achieved remission or low disease activity. Combination DMARD treatment is often used in order to achieve remission or minimal disease activity.

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ICYMI: Axial Involvement in Psoriatic Arthritis

Analysis of a Greek Psoriatic Arthritis (PsA) cohort shows that nearly one quarter of patients have axial involvement, and among them, ∼30% have isolated spinal axPsA and nr-axSpA, respectively.

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JAK Inhibitors: The Latest from the JAK-pot Study Dr. David Liew reports on abstract POS0150 - Evolution of Janus Kinase Inhibitors (JAKi) Prescriptions Since 2015 In An International Collaboration of Rheumatoid Arthritis Registers (The 'JAK-pot' Study): Effect of Regulatory https://t.co/KiOZuphQTx
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PCR: Prevalence, Cost, & Risk (6.27.2025)

Dr. Jack Cush reviews the news and journal reports from last week on RheumNow.com

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What would it take for JAKs to ROCK the boat? JAK inhibitors have taken a beating over the last three years. The excitement and potential has been tempered by mounting cardiovascular safety concerns, but specifically in at-risk patients, compared to TNF inhibitors. https://t.co/tgfsU3uFVo
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What would it take for JAKs to ROCK the boat? JAK inhibitors have taken a beating over the last three years. The excitement and potential has been tempered by mounting cardiovascular safety concerns, but specifically in at-risk patients, compared to TNF inhibitors. Once the https://t.co/JgmfxGa6TY
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Trends and Innovations from Barcelona (6.20.2025)

Dr. Jack Cush reviews highlights, trends and novel studies from EULAR 2025 in Barcelona from last week.

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JAK Safety Update Dr. Jonathan Kay offers his perspectives on abstracts POS0150, POS0151, and POS0157 presented at the 2025 EULAR meeting in Barcelona, Spain. https://t.co/F8WzGohCj8 https://t.co/FguBLrmPzZ
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