ArticleThe Journal of clinical investigation2026
Checkpoint inhibitors create rogue regulatory T cells.
Article in The Journal of clinical investigation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
2 authors.
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Abstract
Immune checkpoint inhibitor-induced inflammatory arthritis (ICI-IA) is an immune-related adverse event (irAE) following treatment with PD-1, PD-L1, or CTLA-4 inhibitors in patients with cancer. In this issue of the JCI, Ma and colleagues identified a subset of regulatory T cells (Tregs) that coexpress CD137 and IL-6 receptor (IL6R), termed atypical Tregs (AtpTregs), which are selectively enriched in patients with ICI-IA. Functionally, AtpTregs exhibited reduced suppressive capacity and a Th17-like proinflammatory phenotype. Notably, these cells were associated with more severe arthritis, yet improved cancer outcomes, suggesting a potential role in tumor control. The anti-IL6R therapy tocilizumab, administered as an off-label intervention for ICI-IA, reduced AtpTreg abundance and alleviated arthritis while maintaining antitumor immunity in a small cohort of patients with new-onset ICI-IA. Thus, anti-IL6R could be a targeted approach to manage ICI-IA and potentially other irAEs involving AtpTregs.
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