Population-based data from Olmsted County finally give a usable number for how often a seronegative RA diagnosis turns out to be something else: about 13% over ten years, front-loaded into the first five, and most often spondyloarthritis. A quarter achieve sustained drug-free remission lasting a median of 6.3 years, one in five needs a biologic — and nothing measured at baseline predicts which.
ACPA-positive and ACPA-negative RA take the same total time from first symptom to arthritis — but split it in mirror image. Seropositive patients reach the rheumatologist later and convert faster; seronegative patients arrive sooner and linger, leaving roughly twice as long an actionable window once they are in front of you. Each entity carries its own signature before arthritis exists.
A 2026 Personal View arguing that ‘seronegative’ usually describes the assay rather than the patient — and that separating genuinely seronegative disease (myeloid/CD8-driven, MHC class I-associated, rituximab-unresponsive) from merely undetected seropositivity is the field’s necessary next step. Includes a disease-by-disease audit of seronegativity rates and why classification criteria naming the antibody but not the method matters.
Five-year data from the TREAT EARLIER trial show that a time-limited intervention (one glucocorticoid injection plus 12 months of methotrexate) in clinically suspect arthralgia produced durable benefit in ACPA-negative individuals at increased risk — RA in 9% vs 32%, NNT 4 — but nothing lasting in ACPA-positive individuals, splitting the at-risk phase into two diseases with two different answers.
SELECT-SWITCH is the first double-blind RCT to test mechanism-of-action switching (to the JAK inhibitor upadacitinib) versus cycling to a second TNF inhibitor (adalimumab) after a first TNFi fails in RA. At 12 weeks, upadacitinib roughly doubled low-disease-activity rates and beat adalimumab on the primary endpoint and 4 of 5 ranked secondaries — though HAQ-DI function did not separate and safety was comparable.
A combined individual-patient-data analysis of the NORD-STAR and BeSt trials shows that where early RA is distributed carries prognostic signal: hand-dominant disease (JIP-Hand) predicts better treatment response and polyarthritis (JIP-Poly) worse — independent of sex and serology, and equally across csDMARDs and bDMARDs, with ACPA/RF showing no association with short-term activity response.
The 2025 EULAR update streamlines RA management to 5 overarching principles and 9 recommendations, abandons post-methotrexate prognostic risk stratification, and keeps JAK inhibitors co-equal with biologics after individual risk assessment.
A 2026 RMD Open narrative review of recombinant zoster vaccine (RZV) in inflammatory rheumatic disease — robust efficacy across IRD cohorts (~95% reduction in HZ recurrence; 54–70% effectiveness in SLE), no meaningful short-term flare signal in RCT data, and a practical drug-by-drug timing framework spanning csDMARDs, biologics, JAK inhibitors and B-cell depletion.