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Rare Diseases

What's New in Lyme Disease

JAMA has published an overview of new considerations on Lyme disease, focusing on Diagnostics, Vaccines, and Prevention.

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Rethinking Treatment of EGPA

Eosinophilic granulomatosis with polyangiitis (EGPA) has long been managed by extrapolating results from microscopic polyangiitis and granulomatosis with polyangiitis clinical trials. But new insights into EGPA's has lead to advances in therapy and new treatment paradigms.

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

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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Arrhythmias in Autoimmune Rheumatic Disease

A new review in the Journal of Cardiovascular Development and Disease (Tamirisa et al) synthesizes how systemic lupus erythematosus, rheumatoid arthritis, and systemic sclerosis have an increased risk of arrhythmias and sudden cardiac death attributable to shared immune pathways.

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$2 Million in Research Grants for Juvenile Arthritis

July is Juvenile Arthritis Awareness Month, and while many people think of arthritis as a disease of aging, nearly 300,000 children in the U.S. are living with a rheumatic disease.

Equally important is that 2026 marks a 50 year anniversary for Pediatric

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Nerandomilast (Jascayd) has been approved in the European Union for adults with idiopathic pulmonary fibrosis (IPF) and progressive pulmonary fibrosis (PPF). The drug was approved for IPF & PPF by the FDA for US use in late 2025 https://t.co/scOuVb3aYy https://t.co/EcmpRhyWgu
Dr. John Cush @RheumNow( View Tweet )

Chikungunya Club Meeting (7.24.2026)

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

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Interferon-α as an Immunologic Driver of Sjögren's Disease

Using data from a Sjogren's registry, researchers have shown that IFNα drives Sjögren's disease, and
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51 yoM w/ 2 yrs of FUO, unintentional 32-kg wt loss, LN, diffuse myalgias, but no GI Sxs or arthralgia. Neg MRIs, CT, PET scan, EGD, colonoscopy. Abnl labs: CRP 173 mg/L, ESR 46, anemia & ^ WBC. Cell-free DNA next-generation sequencing dx Tropheryma whipplei, & Whipple disease https://t.co/nJLa4l7Ers
Dr. John Cush @RheumNow( View Tweet )
ICYMI: VEXAS Syndrome - A Review Beck et al has published a review of the VEXAS syndrome in The Lancet, focusing on the pathogenesis, spectrum, and treatment strategies. https://t.co/K9IMLBdCGI https://t.co/LJdnRflzsU
Dr. John Cush @RheumNow( View Tweet )

EULAR26: Vasculitis updates: Glucorticoid use in AAV and GCA

EurekAlert!

EULAR recommends a combination of glucocorticoids with either rituximab or cyclophosphamide for remission induction in life-threatening or organ-threatening AAV, followed by gradual tapering of glucocorticoids.

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ICYMI: VEXAS Syndrome - A Review

Beck et al has published a review of the VEXAS syndrome in The Lancet, focusing on the pathogenesis, spectrum, and treatment strategies.

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ICYMI: EGPA Review

A current review of eosinophilic granulomatosis with polyangiitis (EGPA) provides current recommendations on diagnosis and management.

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EULAR26: Reports on Systemic Sclerosis

EurekAlert!

In an oral abstract presentation at EULAR 2026, results were shared from a longitudinal observational analysis of the EUSTAR database. The aim was to characterise organ involvement and disease progression – and time to these events – stratified by having a modified disease activity index (

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2-Gene Blood Test for Kawasaki Disease in Febrile Children

JAMA Network Open has publshed that a simple 2-gene blood test may aid the earlier diagnosis of Kawasaki disease in children with febrile illnesses. 

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Do You Zoster Vaccinate? (6.19.2026)

Dr. Jack Cush reviews the news, journal reports and best ways to review EULAR 2026.

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Late-Breaking Studies at EULAR 2026

MedPage Today

Late-breaking abstracts presented at the European Alliance of Associations for Rheumatology's (EULAR) annual meeting, held here last week, addressed a wide range of clinical

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EULAR 2026 Rheumatology RoundUp

It’s time for Rheumatology RoundUp from EULAR 2026 from London, UK. Drs. Artie Kavanaugh and Jack Cush review their choice presentations from the meeting, offering their perspectives on impact and applicability.

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What’s New in Macrophage Activation Syndrome Therapeutics

MAS, the most severe complication of Still’s disease, is increasingly recognized as a cytokine-driven hyperinflammatory state centered on interferon gamma (IFNγ). Therapeutic advances presented at EULAR 2026 demonstrate both consolidation of established pathways and expansion into novel biologic

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Day 4 EULAR Report

The last day in London was exciting as both the Late-Breaking abstracts and new EULAR guidelines were presented. Guidelines presented addressed several significant unmet need areas including PMR, GCA, Takayasu’s arteritis, Vaccinations in Rheumatic patients, Imaging in spondyloarthritis and

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Good performance of #definite #antisynthetase #syndrome ✅+antibody mandatory Possible also does ok @RheumNow #EULAR2026 June 6 #antisynthetase #classifiaction #criteria https://t.co/5sxogTX9YT
Janet Pope @Janetbirdope( View Tweet )

INDIGO: Switching B Cells Off, Not Out, in IgG4-Related Disease

B-cell targeting has moved to the centre of IgG4-related disease treatment, with inebilizumab, a CD19 depleter, as the recent benchmark. At EULAR 2026, INDIGO tested whether the disease can be controlled by switching B cells off rather than depleting them.

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#immune #reset may be ‘asking the earth’ and we may need to consider #immune #dimming ➡️esp if multi drug failure already By Hector Chinoy #WIN #IIM June5 Excellent #CAR-T review should re think of Total immune reset in many #SARD PTS is unlikely EULAR2026 @RheumNow https://t.co/eqKzxzqa0z
Janet Pope @Janetbirdope( View Tweet )
Sarcoidosis increases the risk of MGUS and multiple myeloma. Propensity matched Data from a large global collaborative network study with 40k pts. POS0231 #EULAR2026 @RheumNow https://t.co/mygYCjigFV
Bella Mehta @bella_mehta( View Tweet )
Understanding how Bispecific T cell engagers work: remarkable mode of action! Let’s hope it works as well as in oncology! #teclistamab in #SSc #HOT session Pr Oliver Distler #EULAR2026 @RheumNow https://t.co/waSCXKA79Y
Nelly ZIADE 🍀 @Nellziade( View Tweet )
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