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ACR25 Best Abstracts - Day 4
Here's the last installment of our "ACR Best" abstracts as chosen by the RheumNow faculty. Most of these were from the final, day 4, but a few were noteworthy holdovers from day 3. Enjoy!
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Where are we at with PD-1 agonism?
Promising novel mechanisms of action always create excitement, but the immune checkpoint PD-1 has cemented itself in the news far more than most. This fame is primarily from therapeutic inhibition in cancer and rheumatological inflammatory sequelae that emerge, but invoking the inverse and using PD-1 agonism to treat classical autoimmunity has subsequently been making its own mark. Given the evident plausibility, how do we feel about invoking the opposite and agonising PD-1 in classical autoimmunity?
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Beyond the Breakthrough: Equity and Access in CAR-T Cell Therapy for RA
At ACR Convergence 2025, abstract 1039 entitled, “Global Cost-Effectiveness and Equity in CAR-T Cell Therapy for Rheumatoid Arthritis” adds a critical dimension to the growing enthusiasm around cellular therapies in autoimmune disease.
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Rheumatoid arthritis and the ‘big bang’ at #ACR25!
Is there ‘bang for the buck’ using big data to help predict who will develop RA in at-risk populations and similarly to predict response to csDMARDs, TNFi and JAKi in RA?
https://t.co/QDvdiP3q9R https://t.co/cz4j4vZkSd
Dr. John Cush RheumNow ( View Tweet)
From Fitbit to first diagnosis: AI is rewriting the RA playbook
Two studies presented at this year’s #ACR25 meeting highlight just how close we may be to a future where algorithms flag disease before we can and monitor activity with minimal patient burden. https://t.co/8AwBZkyZIW
Dr. John Cush RheumNow ( View Tweet)
New Insights into Pregnancy Outcomes and Maternal-Fetal Health in Rheumatic Diseases
At #ACR25, the ACR presented new research illuminating critical challenges and advances in pregnancy outcomes for women living with rheumatic diseases, including axial spondyloarthritis, https://t.co/nJjtTMHnD3
Dr. John Cush RheumNow ( View Tweet)
Toxicity is the big question about CAR-T in RA - what did the CRS/ICANS profile look like in this German ph1 in RA?
Pretty good so far - but obviously will be under enormous scrutiny when we are looking at diseases with good existing therapies
#ACR25 ABST0471 @RheumNow https://t.co/xXyzOwLvx8
David Liew drdavidliew ( View Tweet)
LB23: Regulate-RA- ongoing Phase 1 trial of autologous CAR-Tregs in refractory RA (no lymphodepletion)
🔹 4/6 pts had ↓ DAS28-CRP by wk 4 with rapid onset & ↓ joint counts at dose level 2
🔹 Synovial biopsies to date showed ↓ inflammatory score post-tx
@RheumNow #ACR25 https://t.co/JMBbLIEmJG
Akhil Sood MD, MS AkhilSoodMD ( View Tweet)
Will #PAD4 levels predict pts w #CCP positive #arthralgia who will develop #RA?
Leeds study - 79 at risk pts
PAD4 levels may predicting #rheumatoid #arthritis development
#ACR25 @RheumNow @ACRheum abst#832 https://t.co/dnAA6z3NJQ
Janet Pope Janetbirdope ( View Tweet)
Meta analysis evaluating age specific incidence across multiple registries (n=882)
Incidence 9.3 for women & 1.4 for men per 100k person-years
1. Wider distribution than I would have guessed
2. Much less age-dependency for men
@RheumNow #ACR25 Abstr#29W06 https://t.co/46dNGBZ45V
Links:
Mike Putman EBRheum ( View Tweet)
Phase 1 study of CAR-Treg in difficult to treat RA
4/6 pts had 50% reduction in TJC/SJC, no CYC/fludrabine required & good prelim safety data
CAR-T remains exciting, but less of the "totally magical everyone cured" stuff we saw w/initial CAR-T reports
@RheumNow #ACR25 https://t.co/kjBIkLCYpF
Links:
Mike Putman EBRheum ( View Tweet)
"Achieving good control of joint disease activity is probably the key objective of treatment of patients with RA-ILD"
- Gregory McDermott (Epi Abstracts, #2662)
Totally agree with this! SARD guidelines recommendingn drugs with mediocre activity in RA was surprising
@RheumNow
Mike Putman EBRheum ( View Tweet)
Excited about this target trial emulation in RA-ILD
Compared to RTX, NO significant difference in hospitalization/transplant/death for JAK, ABA, IL6 or TNF
Trends toward ABA and JAK looking better than RTX
Need trials for sure, but I like this project a lot
@RheumNow #ACR25 https://t.co/FQcphRvyHK
Links:
Mike Putman EBRheum ( View Tweet)
#2686 Using HR-pQCT, researchers tracked bone changes in RA & PsA. Seropositive RA showed worst bone density & microstructure, worsening with disease activity. TNFi, RTX & BARI improved MCP bone density, highlighting the impact of inflammation and treatment. @RheumNow #ACR25
Mrinalini Dey DrMiniDey ( View Tweet)
Will CAR-Treg Rx be helpful in active #refractory #rheumatoid #arthritis?
Early data n=6 treated w low dose (3 per arm), ongoing and doses will escalate
Improvemt in #clinical #disease #activity
less inflammation on #synovial #biopsies 3 pts
#LB23 #ACR25 @RheumNow @ACRheum https://t.co/PkhsvztVjx
Janet Pope Janetbirdope ( View Tweet)
GLP-1 RA vs DPP4i & risk of rheumatic disease: propensity score matched cohort study using TriNetX
🔹 Lower incidence of OA, RA & gout w/ GLP-1 RA
🔹 No significant differences for PsA, SSc, axSpA, or SLE
@RheumNow #ACR25 https://t.co/BIVw3ajrFZ
Akhil Sood MD, MS AkhilSoodMD ( View Tweet)
#2662
Using Medicare data to emulate real-world RA-ILD trials, investigators compared RTX vs ABA, TOC, JAKi & TNFi
No sig differences in mortality, resp, hospitalisation or lung transplant across groups, suggesting other b/tsDMARDs may be as safe as RTX for RAILD
@RheumNow #ACR25
Mrinalini Dey DrMiniDey ( View Tweet)
Abstract 2694: Neutrophil:Lymphocyte ratio (NLR)- a practical step towards clinical monitoring of interferon?
Log₂NLR significantly correlated with all three IFN signatures across patients with SLE, systemic sclerosis, rheumatoid arthritis, and myositis
@RheumNow #ACR25 https://t.co/ujaOQGvAUV
Akhil Sood MD, MS AkhilSoodMD ( View Tweet)
McDermott et al. Target trial emulation of different b/tsDMARDs in RA-ILD. RTX as SOC. No significant differences seen in hospitalisation or death. Trends to abatacept and JAKi looking better... @RheumNow #ACR25 Abstr#2662 #ACRBest https://t.co/ghHEKztvgz
Richard Conway RichardPAConway ( View Tweet)
#PD1 Ab looks good and safe in active RA
Rosnilimab, a Selective and Potent Depleter of Pathogenic T
Many failed several Rx already
No safety signals compared to another PD1i
Proof of benefit in biospecimens too!
abst#LB19 #ACR25 @RheumNow @ACRheum
#ACRBest https://t.co/TmEOCfuHZU
Links:
Janet Pope Janetbirdope ( View Tweet)
