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Pitfalls of autoimmune serologic testing

Misuse of laboratory testing may lead to misdiagnoses and mismanagement; this is particulary prevalent when clinicians consider the use of the diagnostic use of  serological autoimmune markers. 

A current review focuses commonly used serologies and autoimmune tests to identify common pitfalls and a diagnostic workflow when suspecting systemic autoimmune diseases.

Practical points from this review: 

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5 years of an IL–23 inhibitor in bio-naive patients with PsA Explore safety & efficacy data.  Hear the experts discuss. How might early treatment decisions impact long-term outcomes in patients? Sponsored by AbbVie Medical Affairs + Health Impact. https://t.co/xoPdYAof7m https://t.co/qkD7rMozps
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ICYMI: My Cancelled Lecture Slides https://t.co/hHvszC0SFR https://t.co/SRqfM5DsT3
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International Osteoporosis Foundation (IOF) has developed a self-management website for people living with osteoporosis. The website focuses on providing education and resources for exercise, nutrition, home safety, and advice for care partners. https://t.co/T8TllaIipU https://t.co/V7ifRaTWZY
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Rheumatic Immune-related Adverse Effects with Checkpoint Inhibitor Therapy A retrospective study of patients who developed rheumatic immune-related adverse events (R-irAEs) after receiving immune checkpoint inhibitors (ICIs) at two oncology centers in Spain suggests that early https://t.co/hYf6GiR6TN
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Managing Gout in CKD Patients A current review article addressed the management of gout patients with chronic kidney disease (CKD). This full read review addresses the epidemiology, challenges, treatment decisions, and outcomes. https://t.co/ND0cspcmDd https://t.co/HI55D5koZj
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NEJM: Obinutuzumab in Active Systemic Lupus Erythematosus A phase 3 trial of obinutuzumab, an anti-CD20 monoclonal antibody, showed potent B-cell depletion and clinical efficacy active systemic lupus erythematosus without evidence of nephritis. https://t.co/OEuNAZlgzp https://t.co/F00L9uYEOv
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Long-Term Hydroxychloroquine Retinopathy Risk About one in 18 patients taking hydroxychloroquine (HCQ) for 15 years develop retinal damage, a new meta-analysis indicated. https://t.co/TBSTIb29Pf https://t.co/7TYQe4N4JH
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Basic, full-read overview of "JAK inhibitors: risks and safety principles" from the Pharmaceutical Journal. Addresses MOA, indications, warnings, monitoring, adverse effects, interactions, Serious AEs, vaccination and best practices. https://t.co/6kZCde1NdF https://t.co/NlEKtvUGPa
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“We’re facing a tsunami of retiring older, white rheumatologists” – Chad Deal, MD

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UCB announced topline results of the BE-BOLD head-to-head study where bimekizumab (IL-17i) was superior to risankizumab (IL-23i) study; 553 active PsA in achieving an ACR50 response at 16 weeks. Enrolled PsA pts were either bilogic naïve or who had previous exposure to 1 TNFi

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https://t.co/4UQlqwujiR 2026 — On Demand Catch the sessions everyone in rheumatology is talking about: • RA advances • Psoriatic arthritis decisions • Spondyloarthritis updates • Autoimmune disease highlights • Vasculitis insights Full recordings + slides available now. https://t.co/QT6NOXakVv
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Annual fibromyalgia survey (FIRST) in axSpA pts in the DESIR cohort. FM was found in 22% (& assoc w/ less HLA-B27+ & XRay sacroiliitis, equal MRI SI a& ^ CRP. FM/AxSpA had less self-reported Dz activity, QOL, more disability & more likely to Rx w/ TNFi (64% vs 41%), but resp https://t.co/9rkZFUSB2M
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The Role of Calcineurin Inhibitors in Lupus Nephritis In the U.S, lupus nephritis affects approximately 40–50% of patients with systemic lupus erythematosus (SLE), contributing significantly to the morbidity and mortality of the affected individuals (1). However, significant https://t.co/sc4cgAYzGy
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Poets Know It (3.13.2026)

Dr. Jack Cush reviews the news, regulatory decisions and new journal articles.

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Rheumatic Immune-related Adverse Effects with Checkpoint Inhibitor Therapy A retrospective study of patients who developed rheumatic immune-related adverse events (R-irAEs) after receiving immune checkpoint inhibitors (ICIs) at two oncology centers in Spain suggests that early https://t.co/jKCbIvfebm
Dr. John Cush @RheumNow (  View Tweet)
Sodium-glucose cotransporter-2 (SGLT2) inhibitors lower serum uric acid levels, by approximately 0.6 to 1.5 mg/dL. They increase renal uric acid excretion via a uricosuric effect), thereby reducing gout risk by 30% to 50%. https://t.co/weXVOhpiP9 https://t.co/NsCRNi9JI9
Dr. John Cush @RheumNow (  View Tweet)
Metanalysis of calcineurin inhib. in RA - 11 RCTs, 1793 RA pts. Cyclosporin (CSA( (RR 1.6 & Tacrolimus (TAC (RR 2.1) signif improved ACR20 responses. CSA was dose dependent, less so w/ TAC. Both require serum Creat. monitoring consistent increase in s-Cr https://t.co/OxNGYbupnt https://t.co/F08vDCMYtr
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2 RCTs of 699 children Tx in ER for acute limb injury compared 1 dose of oral acetaminophen or hydromorphone to ibuprofen - none significantly reduce self-reported pain scores at 60 minutes. Use of hydromorphone resulted in a 4-fold increase in adverse events. https://t.co/cqddDES9V0
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