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Rheumatology Pitfalls (3.20.2026)

Jack Cush, MD

Dr. Jack Cush reviews the regulatory actions, news and journal reports from this past week on RheumNow.com.

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Hydralazine and the Rare Risk of Vasculitis

Jack Cush, MD

Since the 1980s, hydralazine has been a notable cause of drug-induced lupus, and inferred to cause vasculitis as well.

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UBER Rheumatology Ride (3.6.2026)

Jack Cush, MD

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

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Progress in GCA and Takayasu's Arteritis

Robert Chao, MD

I recently attended a fascinating lecture by Dr. Anisha Dua on progress in the diagnosis and treatment of large-vessel vasculitis, with a focus on giant cell arteritis (GCA) and Takayasu's arteritis. She opened with what felt like the most honest “state of the union” slide you can show a room full of rheumatologists: steroid burden is still enormous.

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Diagnosing and Managing GCA and Takayasu’s Arteritis

Adela Castro, MD

Giant-cell arteritis and Takayasu’s arteritis are both large-vessel vasculitides, but each brings its own diagnostic and management challenges. Many of the difficulties overlap because they are rare, heterogeneous, and lack perfect diagnostic tests or specific biomarkers.

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Cockerell

Vasculitis

Richard Conway, MBBChBAO, PhD

Sunday’s vasculitis session at RNL26 was a fantastic update on inflamed blood vessels, large and small, by two experts in the field: rheumatologist Dr. Mike Putman and dermatopathologist Dr. Clay Cockerell.

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ANA Pollution (2.06.2026)

Jack Cush, MD

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

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FDA vs. Amgen: At Odds Over Avacopan

MedPage Today

The FDA has requested that Amgen voluntarily withdraw avacopan (Tavneos), a treatment for anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis, but the company said it has no plans to pull the drug from the market.

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Giant Cell Arteritis Outcomes in Canada

Jack Cush, MD

A retrospective cohort study of patients with giant cell arteritis (GCA) demonstrates relapses are common and seen in nearly half of patients, were common after treatment is stopped and is not effectively averted by methotrexate (MTX).

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Aortitis in Giant Cell Arteritis Treated with Tocilizumab

Jack Cush, MD

The The Tocilizumab in Giant Cell Arteritis Spanish Collaborative Group studied giant cell arteritis with aortitis, comparing the efficacy of intravenous vs. subcutaneously (SC) tocilizumab (TCZ) - demonstrating the superiority of SC TCZ.

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Retrospective Japanese study of 544 pts w/ GPA or microscopic polyangiitis (MPA) followed > 48 wks; only 29 (5.3%) achieved steroid free remission (GFCR) at wk 48. Predictors of GFCR: rituximab induction (OR 3.9) & avacopan use (OR 24.3). MP pulse RX had lower likelihood of GFCR https://t.co/EMRqA5oHJQ
Dr. John Cush RheumNow ( View Tweet)
Hydralazine and the Rare Risk of Vasculitis Since the 1980s, hydralazine has been a notable cause of drug-induced lupus, and inferred to cause vasculitis as well. A retrospective cohort study from Canada has shown that vasculitis resulting from hydralazine is possible, but https://t.co/ewqCesatbm
Dr. John Cush RheumNow ( View Tweet)
What did you miss at RheumNow Live 2026? Our Poster Hall features new data across: • Psoriatic Arthritis • Systemic Lupus Erythematosus • Lupus Nephritis • Vasculitis • Polymyalgia Rheumatica • Axial Spondyloarthritis From Phase III trials to real-world evidence, these https://t.co/nuXGUdmwon
Dr. John Cush RheumNow ( View Tweet)
Is Giant cell arteritis over diagnosed or over-referred? Caution IF the patient is: 1) under age 50yrs; 2) has Hx of chronic HA or migraine; 3) has normal ESR/CRP. Why not consider screen w/ Giant Cell Arteritis Probability Score (needing 9.5/32 points) https://t.co/qnCWgzjYJ4 https://t.co/LT6atm0m8f

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Dr. John Cush RheumNow ( View Tweet)
Diagnosing and Managing GCA and Takayasu’s Arteritis Giant-cell arteritis (GCA) and Takayasu’s arteritis (TAK) are both large-vessel vasculitides, but each brings its own diagnostic and management challenges. Many of the difficulties overlap because they are rare, https://t.co/ePJqcMjcBA
Dr. John Cush RheumNow ( View Tweet)
What did you miss at RheumNow Live 2026? Our Poster Hall features new data across: • Psoriatic Arthritis • Systemic Lupus Erythematosus • Lupus Nephritis • Vasculitis • Polymyalgia Rheumatica • Axial Spondyloarthritis From Phase III trials to real-world evidence, these

Dr. John Cush RheumNow ( View Tweet)

The vasculitis session at #RNL26 was a fantastic update on inflamed blood vessels, large and small, by two experts in the field. https://t.co/KuVei8jiFu https://t.co/PR4h2qniEL

Links:

Dr. John Cush RheumNow ( View Tweet)
FDA vs. Amgen: At Odds Over Avacopan The FDA has requested that Amgen voluntarily withdraw avacopan (Tavneos), a treatment for anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis, but the company said it has no plans to pull the drug from the market. https://t.co/v5AYm6r53W
Dr. John Cush RheumNow ( View Tweet)
NEJM: Aortitis Due to Large-Vessel Vasculitis 63yoM w/ Hx HTN c/o 3 mos of CP, palpitations, abdominal pain. ESR-104, CRP 85 mg/L. CT showed thickening of the thoracic & abdominal aorta. After 6wks Rx w/ AZA, HCQ, Pred, ESR/CRP still high and pt stared on SC TCZ w/ improvement. https://t.co/1TBreptAFr
Dr. John Cush RheumNow ( View Tweet)
Giant Cell Arteritis Outcomes in Canada A retrospective cohort study of patients with giant cell arteritis (GCA) demonstrates relapses are common and seen in nearly half of patients, were common after treatment is stopped and is not effectively averted by methotrexate (MTX). https://t.co/7hIpn6CJXg
Dr. John Cush RheumNow ( View Tweet)
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