Meta-analysis of gut microbiome studies identifies disease-specific and shared responses
Author(s)Irizarry, Rafael A.; Duvallet, Claire; Gibbons, Sean Michael; Gurry, Thomas Jerome; Alm, Eric J
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Hundreds of clinical studies have demonstrated associations between the human microbiome and disease, yet fundamental questions remain on how we can generalize this knowledge. Results from individual studies can be inconsistent, and comparing published data is further complicated by a lack of standard processing and analysis methods. Here we introduce the MicrobiomeHD database, which includes 28 published case-control gut microbiome studies spanning ten diseases. We perform a cross-disease meta-analysis of these studies using standardized methods. We find consistent patterns characterizing disease-associated microbiome changes. Some diseases are associated with over 50 genera, while most show only 10-15 genus-level changes. Some diseases are marked by the presence of potentially pathogenic microbes, whereas others are characterized by a depletion of health-associated bacteria. Furthermore, we show that about half of genera associated with individual studies are bacteria that respond to more than one disease. Thus, many associations found in case-control studies are likely not disease-specific but rather part of a non-specific, shared response to health and disease.
DepartmentMassachusetts Institute of Technology. Department of Biological Engineering; Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Nature Publishing Group
Duvallet, Claire et al. “Meta-Analysis of Gut Microbiome Studies Identifies Disease-Specific and Shared Responses.” Nature Communications 8, 1 (December 2017): 1784 © 2017 The Author(s)
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