Psoriatic arthritis

Can Effective Psoriasis Therapy Prevent Psoriatic Arthritis? A review article assesses and integrates mechanistic, imaging, and clinical evidence to examine whether effective treatment of psoriasis may modify the future risk of psoriatic arthritis (PsA). https://t.co/3gnV3eaKiu
Dr. John Cush @RheumNow( View Tweet )
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Can Effective Psoriasis Therapy Prevent Psoriatic Arthritis?

Jack Cush, MD

A review article assesses and integrates mechanistic, imaging, and clinical evidence to examine whether effective treatment of psoriasis may modify the future risk of psoriatic arthritis (PsA).

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POETYK PsA-1: Deucravacitinib in Biologic-Naïve PsA POETYK PsA-1 trial tested the disease modifying efficacy of deucravacitinib, a tyrosine kinase 2 (TYK2) inhibitor, in PsA patients and was shown to be superior vs to placebo for clinical responses, patient-reported outcomes, https://t.co/6ptGmzCoQ9
Dr. John Cush @RheumNow( View Tweet )
2026 BSR Pain Guideline: What Rheumatologists Need to Know The British Society for Rheumatology has issued its first guideline dedicated solely to pain in inflammatory arthritis (IA)—covering RA, PsA, axial SpA and JIA. https://t.co/3Jtneox8Rh https://t.co/06ccLhjhMh

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Dr. John Cush @RheumNow( View Tweet )
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Doubting RS3PE (8.14.2026)

Jack Cush, MD

Dr. Jack Cush reviews the news and journal articles this week where RheumNow featured info on cancer, deadly viruses, AI rules, poetry and good moons rising.

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NHANES survey (2005-2018) studied prevalence of arthritis in adults w/ depression (PHQ-9 ≥10), From 15157 depressed pts, RA was most prevalent & increased 7.8 to 17.7%; OA unchanged 11.7 to 10.7% & PsA declined 7.2 to 1.7%. Depression assoc w/ higher risk for RA (OR 1.40) & PsA https://t.co/fcROEvsHDT
Dr. John Cush @RheumNow( View Tweet )
POETYK PsA-1: Deucravacitinib in Biologic-Naïve PsA POETYK PsA-1 trial tested the disease modifying efficacy of deucravacitinib, a tyrosine kinase 2 (TYK2) inhibitor, in PsA patients and was shown to be superior vs to placebo for clinical responses, patient-reported outcomes, https://t.co/VjwpCVKPz0
Dr. John Cush @RheumNow( View Tweet )
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2026 BSR Pain Guideline: What Rheumatologists Need to Know

Jack Cush, MD

The British Society for Rheumatology has issued its first guideline dedicated solely to pain in inflammatory arthritis (IA)—covering RA, PsA, axial SpA and JIA.

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RA,polyarticular,black,rheumatoid

Evaluating Inflammatory Joint Pain in Older Adults

Jack Cush, MD

Lee, Levinson, and Makris have published an approach to evaluating inflammatory joint pain in older adults in JAMA Internal Medicine. While intended to be a practical guide for primary care clinicians, the tenets and clues ring true for all.

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MoonLake announced positive phase 3 data from its IZAR-1 RCT using its dual A/F IL-17 inhibitor sonelokimab, showing significant responses at week 16: 66% ACR20, 42% ACR50, 41% minimal disease activity (MDA), & 61% PASI90 at week 16. a 2nd IZAR-2 PsA RCT is in progress https://t.co/eX0cxekRKG
Dr. John Cush @RheumNow( View Tweet )
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Wealth and Where you Live Influences Outcomes

EurekAlert!

Patients from wealthier European countries tend to start treatment with biologics earlier but also stop or switch treatment earlier. They also experience lower disease activity at treatment start than patients in middle- and low-income countries.

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POETYK PsA-1: Deucravacitinib in Biologic-Naïve PsA

Jack Cush, MD

POETYK PsA-1 trial tested the disease modifying efficacy of deucravacitinib, a tyrosine kinase 2 (TYK2) inhibitor, in psoriatic arthritis (PsA) patients and was shown to be superior vs to placebo for clinical responses, patient-reported outcomes, and structural damage inhibition in PsA.

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COLIPSO prospective study of psoriasis or psoriatic arthritis adults starting ts/bDMARDs; MRI done serially. 35 pts f/u for ~29 wks - MASLD. Only Rx w/ IL-17 inhibitors improved liver fat and inflammation in psoriatic disease as well as clinical outcomes. https://t.co/MFjvh5OJg2 https://t.co/k0C7RSvaaR

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Dr. John Cush @RheumNow( View Tweet )
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Mentshlichkeit* (8.7.2026)

Jack Cush, MD

Dr. Jack Cush reviews the news and recent journal reports on RheumNow.com.

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A Tribute to Daniel L. Kastner, MD, PhD (1951–2026)

Jack Cush, MD

The rheumatology, genetics and NIH communities mourn for Dr. Daniel L. Kastner, who died on July 28, 2026, in Bethesda, Maryland, at age 74. The following are declarations, tributes, and memories dedicated to this mensch of a man, titan of science, memorable mentor and humble physician.

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British Dermatology Biologics registry (BADBIR) 18976 #PSO pts had incidence serious infxns (SIE) 28 SEI/1000 Pt-Yrs; higher if they had prior infxn (79/1000 PYs). SIE signif lower w/ RIZankizumab (HR 0.74-.80) vs BROAD, ETN, other standards Rxs. SIE deaths rare (1.81/1000 PYs) https://t.co/GTr3DLCVXs
Dr. John Cush @RheumNow( View Tweet )
British Dermatology Biologics registry (BADBIR) 18976 #PSO pts had incidence serious infxns (SIE) 28 SEI/1000 Pt-Yrs; higher if they had prior infxn (79/1000 PYs). SIE signif lower w/ RIZankizumab (HR 0.74-.80) vs BROAD, ETN, other standards Rxs. SIE deaths rare (1.81/1000 PYs) https://t.co/5HqJ3zpO0g
Dr. John Cush @RheumNow( View Tweet )
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Methotrexate Safety Tips (7.31.2026)

Jack Cush, MD

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

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The Wider Implications of Dactylitis Dactylitis, AKA the "sausage digit", is a hallmark of psoriatic arthritis (PsA), but as Possemato and colleagues point out, it is fundamentally a clinical sign, and not a diagnosis. https://t.co/HRaIvMHMSV https://t.co/XOcHbFVMsS

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Dr. John Cush @RheumNow( View Tweet )
3 Rx are FDA approved for hidradenitis supprativa (secukinumab, adalimumab, bimekizumab). New JAK1i Povorcitinib in STOP-HS1 and STOP-HS2 ph 3 PCTs (608/619 pts). Povo showed HiSCR50 ~42% vs PBO 29% @wk12. AE: acne, pharyngitis https://t.co/n3FJUOjNuo https://t.co/9YAmPqW44z

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Dr. John Cush @RheumNow( View Tweet )
Psoriasis = Myocardial Dysfunction (unrelated to Cardiometabolic Risk Factors) 1010 PsO pts vs controls w/o skin dz, assessed clinically & by ECHO. PSO pts (even w/ controlled dz) had signif more myocardial dysfunction (17% vs 6%). Higher BMI & DM independently assoc w/ https://t.co/MjcRmgyCWX
Dr. John Cush @RheumNow( View Tweet )
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The Wider Implications of Dactylitis

Jack Cush, MD

Dactylitis, AKA the "sausage digit", is a hallmark of psoriatic arthritis (PsA), but as Possemato and colleagues point out, it is fundamentally a clinical sign, and not a diagnosis. This review article discusses the wider implications of dactylitis in rheumatology and medicine underscores the

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UTSW observational study of labs (n 14,199) changes w/ MTX use in 2,439 pts (13% RA, 11% PsO/PsA, 15% inflam arthritis) - found no difference in labs q3 vs q6 mos. No signif correlation betw monitoring intervals & changes in ALT, AST,WBC, HCT, MCV, PLT, FIB-4. Small https://t.co/gKwA7juexG
Dr. John Cush @RheumNow( View Tweet )
Fibrosis-4 (FIB-4) Index for Liver Fibrosis is calculated from age, AST, ALT, Plts. Study of 174 RA, PsA, PsO pts on MTX find 11% w/ fibrosis (by elastography). FIB-4 AUC for fibrosis =0.68 (weak). Fibrosis was signif assoc w/ FIB-4 >1.62, DM, obesity, advanced steatosis https://t.co/GYrhs2U1s3
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Psoriatic Arthritis: EULAR 2026 Recap https://t.co/tBMu4CEn0o https://t.co/iztShOHxOf

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Therapeutic Updates

PsA GRAPPA domains: Outcomes With a JAKi

AbbVie April 2026 RX Update Sponsored Image
Dr. Schwartzman and Dr. Ruderman discuss how PsA disease activity across GRAPPA domains may guide treatment decisions, sharing both the evidence for and their experience with a JAKi across domains.
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5-Year Results of an IL-23 Inhibitor in Patients With PsA

AbbVie March 2026
Dr. Alvin Wells and Dr. Shikha Singla share their clinical perspectives on using an IL–23 inhibitor to manage patients with PsA throughout their treatment journey in the context of 5-year data from the KEEPsAKE trial program.
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Recent Blogs

Advanced Practice Rheum

Methotrexate

Jack Cush, MD
APR MTX Cover
In this session, Dr. Jack Cush reviews methotrexate.
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Advanced Practice Rheum

Evaluation of Rheumatic Complaints

Jack Cush, MD
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Dr. Cush provides a systematic approach to evaluating musculoskeletal and rheumatic complaints in clinical practice.
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Best of 2022: The Enthesitis Challenge in Psoriatic Arthritis

Robert Chao, MD
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A colleague of mine once told me an interesting story of how her father, who was a doctor, misdiagnosed his wife with fibromyalgia when she actually had psoriatic arthritis with enthesitis all along. I would venture out and say that the average physician would have trouble evaluating enthesitis because even we, as rheumatologists do! 
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Podcasts

  • PsA Topic Podcast compilation
  • EULAR 2026 Daily Podcast Day 4c
  • EULAR 2026 Daily Podcast Day 4a
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