Researchers Map 2.2 Million Single Cells, Linking 180 IBD Loci to Effector Genes
Updated
Updated · Nature.com · Jun 3
Researchers Map 2.2 Million Single Cells, Linking 180 IBD Loci to Effector Genes
2 articles · Updated · Nature.com · Jun 3
Summary
Using intestinal biopsies and blood from 421 people, including 125 with inflammatory bowel disease, the study linked 180 of 321 known IBD loci to 419 effector genes and identified 74 loci for the first time.
Cell-type-level eQTLs were more than 3.5 times as likely as tissue-level signals to colocalize with IBD GWAS loci, showing that disease risk is often driven by regulatory effects hidden in bulk tissue analyses.
Myeloid and dendritic cells emerged as key sites of risk, with genes including MAML2, ZMIZ1 and PSEN2 pointing to disrupted Notch signaling in intestinal immune regulation.
Epithelial stem, progenitor and colonocyte populations highlighted Wnt-linked genes including MYC, RASGRP1, LPIN3 and RNF14, suggesting impaired renewal and barrier breakdown as another IBD mechanism.
The atlas also connected some loci to existing or repurposable drug targets such as JAK2, ITGA4 and PRKCB, offering a framework to interpret non-coding disease variants and prioritize therapies.
This study pinpoints IBD's cellular origins. Could this same map unlock cures for diseases like Parkinson's?
As IBD genetics are decoded, how can new therapies avoid deepening existing racial health disparities?
With IBD's genetic triggers identified, are we overlooking simpler cures hidden in our gut microbiome?
Largest Single-Cell Atlas of IBD: IBDverse Links 180 Genetic Loci to Disease Mechanisms and New Therapies
Overview
In June 2026, the IBDverse project published its largest single-cell atlas in Nature and PMC, marking a major milestone in Inflammatory Bowel Disease (IBD) research. By mapping 2.2 million single cells from intestinal biopsies and blood samples of over 400 individuals, including 125 IBD patients, the project created the most extensive IBD single-cell atlas ever. A key achievement was linking 180 genetic loci to specific effector genes and cell types, offering new insights into the complex genetic architecture of IBD and paving the way for deeper understanding and improved treatment strategies.