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Drug Safety

Double Trouble (10.23.2026)

Jack Cush, MD

Dr. Jack Cush reviews the journal articles and regulatory announcements from this past week on RheumNow, including: two crystals in one joint, twice the cryptococcus risk in JAKs; Myositis and Scleroderma; and Sjögren’s plus early damage = >> 2 fold risk lymphoma. Double trouble week

Dr. John Cush
@RheumNow
150 #Gout pts (56 yrs old; 33wks F/U; 21% drank EtOH, 29% obese, 5% MASLD) on allopurinol followed w/ labs. 30y (20%) had incr AST/ALT (87% mild, none severe). Allopurinol was cont 18/10 without change in AST/ALT. Allopurinol was not the primary cause of LFT elevation https://t.co/nBCACpvr5W
Dr. John Cush
@RheumNow
Cryptococcus is rare, but twice as likely with JAK inhibitors. Retrospective TriNetX analysis of RA pts (>30k/grp) starting JAKi vs TNFi; JAKi vs non-TNFi; & TNFi vs non-TNF. Crypto seen in <0.2% in all groups; but signif higher HR for JAKi (HR 2.2 & 2.15) https://t.co/fJeKwDZABL

‘Tis the Season for Vaccination

Eric Dein, MD

As the leaves start changing color and spooky decorations populate neighborhood doorsteps, another autumnal tradition begins: vaccination counseling. Fall offers a golden opportunity to protect our patients before respiratory viruses fill our waiting rooms. In patients with rheumatologic

Dr. John Cush
@RheumNow
Can DMARD Doses Be Safely Reduced for RA Patients? Close to 90% of patients with rheumatoid arthritis (RA) well controlled on targeted therapies were able to take 50% dosage reductions without experiencing worsened disease activity in a randomized trial, South Korean https://t.co/MyjZdRaGb4
Dr. John Cush
@RheumNow
French National Health System study of 214,892 #RA pts (~40K on TNFi) found 562 demyelinating events (2008-2023) w/ cumulative 10 yr incidence of 0.32% w/ csDMARDs & 0.50% w/ TNFi (HR 1.47;1.11-1.95). Demyelinating events are rare in RA, but signif higher w/ TNFi https://t.co/6vUy5nsQ27

Colchicine & Statins: A significant interaction?

Brian Jaros, MD

Aside from diarrhea, colchicine use is generally well tolerated, but its metabolism via the CYP3A4 cytochrome P450 enzyme pathway poses a potential risk of medication interaction. Statins are one of the most widely prescribed medication classes also metabolized by this pathway thus positing

Are Concerns Over Avacopan Efficacy Overblown?

MedPage Today

Avacopan (Tavneos), the complement pathway inhibitor for antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV), appeared strongly effective in an Italian registry study -- a step, maybe, toward setting to rest questions about its efficacy, if not its safety.

Dr. John Cush
@RheumNow
T-cell engager blinatumomab (CD3xCD19 TCE) was used for Deep B-cell depletion in 15 resistant RA pts (MDR-RA). @wk 12 9/15 CDAI LDA, 3/15 CDAI remission. Synovial B cells were depleted (4 of 5 biopsies) but not in lymph nodes. Later, 14/15 flared. No ICANs, 3/15 w/ CRS (gr 1) https://t.co/xLGZjkMmit
Dr. John Cush
@RheumNow
Danish national study (2003-2024) of 51,401 #PMR pts (24K PCPs, 27K secondary MDs): PMR incidence = 112/100K. PMR decr 53% in primary care & incr 30% in secondary care (overall 12% decline). Among PMR, GCA rate was 5.4/1,000 PYs, w/ median 68 days from PMR Dx. 28% & 22% were https://t.co/s168riRRLB

Don’t Hold the JAK (10.9.2026)

Jack Cush, MD

On this week's podcast, Dr. Jack Cush reviews the news: Steroids are easy to start and hard to stop; hold the MTX but not the biologic or JAK, weighing in on avacopan, and age-old messages for old-age patients. 

Can DMARD Doses Be Safely Reduced for RA Patients?

MedPage Today

Close to 90% of patients with rheumatoid arthritis (RA) well controlled on targeted therapies were able to take 50% dosage reductions without experiencing worsened disease activity in a randomized trial, South Korean researchers said.

Dr. John Cush
@RheumNow
POETYK PsA-1 - Efficacy and Safety of Deucravacitinib in Psoriatic Arthritis van der Heijde et al have published the results of the phase 3 POETYK PsA-1 trial demonstrating that deucravacitinib was superior to placebo in clinical responses, patient-reported outcomes, and https://t.co/ovASDqLeWK
Dr. John Cush
@RheumNow
Retrospective real world avacopan (AVCP) safety data from UK vasculitis center looked at AAV pts (RTX or CTX) rx w/ AVCP (n 133) or not AVCP (n 458). @1 yr AVCP had nonsignif incr in ALT >2xULN (15.8% v 11.4%) or >3xULN (11.3% v 6.3%; P 0.064) No diff in Alk phos, Bili, Hy's law https://t.co/ZZhpxdKhQl
Dr. John Cush
@RheumNow
T-cell engager blinatumomab (CD3xCD19 TCE) was used for Deep B-cell depletion in 15 resistant RA pts (MDR-RA). @wk 12 9/15 CDAI LDA, 3/15 CDAI remission. Synovial B cells were depleted (4 of 5 biopsies) but not in lymph nodes. Later, 14/15 flared. No ICANs, 3/15 w/ CRS (gr 1) https://t.co/ddLb7lIHka
Dr. John Cush
@RheumNow
Using national survey data of adults (62-85 yrs) saw no change in Rx Med (84% vs 85%) or dietary supplement (66% vs 67%) use betw 2015-2016 & 2021-2013. But OTC declined (60% vs 55%; P = .04). Polypharmacy signif incr. Drug-drug interactions declined (26% vs 22%; P .02) w/ https://t.co/16xPyKS2aU
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