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Changes in the glycosylation of circulating IgG predict future Crohn’s disease onset

Patients with Crohn’s disease display an altered serum IgG glycosylation signature that is detectable many years before clinical diagnosis and is associated with increased levels of pathogenic anti-mannan antibodies. The altered IgG glycoforms activate innate immune cells, in a preclinical phase, promoting the transition to intestinal inflammation.

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Fig. 1: The glycome–ASCA pathway in preclinical CD: impact on disease onset.

References

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This is a summary of: Gaifem, J. et al. A unique serum IgG glycosylation signature predicts development of Crohn’s disease and is associated with pathogenic antibodies to mannose glycan. Nat. Immunol. https://doi.org/10.1038/s41590-024-01916-8x (2024).

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Changes in the glycosylation of circulating IgG predict future Crohn’s disease onset. Nat Immunol 25, 1526–1527 (2024). https://doi.org/10.1038/s41590-024-01919-5

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