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Getting the latest healthcare news for you
Getting the latest healthcare news for you
A new study found that distinct immune changes — detectable up to 10 years before diagnosis — precede both Crohn's disease and ulcerative colitis. Using a high-throughput antibody profiling tool, researchers identified disease-specific signatures, including elevated responses to Epstein-Barr virus and bacterial flagellins in Crohn's. These findings could open a window for preventive intervention long before bowel damage sets in.
By the time most IBD patients are diagnosed, their gut has already taken a hit. A new case-control study published in Gut reveals that the immune system starts showing measurable, disease-specific changes up to 10 years before a diagnosis of Crohn's disease (CD) or ulcerative colitis (UC) — offering a potential roadmap for earlier intervention.
Using phage-display immunoprecipitation sequencing (PhIP-Seq), researchers profiled antibody responses across 2,000 longitudinal serum samples from 500 individuals (200 CD, 200 UC, 100 healthy controls) drawn from a U.S. military cohort. The technology screens antibody reactivity against 357,000 peptide antigens simultaneously — far beyond what conventional assays can detect.
Key Takeaways:
Why it matters: There's roughly a decade-long window in which the immune system is measurably abnormal but the patient appears healthy. Identifying high-risk individuals — such as first-degree relatives of IBD patients — during this window could make disease prevention a realistic goal, rather than just damage control.
