Identifying biases and their potential solutions in human microbiome studies
Open accessAbstract
Advances in DNA sequencing technology have vastly improved the ability of researchers to explore the microbial inhabitants of the human body. Unfortunately, while these studies have uncovered the importance of these microbial communities to our health, they often do not result in similar findings. One possible reason for the disagreement in these results is due to the multitude of systemic biases that are introduced during sequence-based microbiome studies. These biases begin with sample collection and continue to be introduced throughout the entire experiment leading to an observed community that is significantly altered from the true underlying microbial composition. In this review, we will highlight the various steps in typical sequence-based human microbiome studies where significant bias can be introduced, and we will review the current efforts within the field that aim to reduce the impact of these biases.
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Concerns have been raised regarding limitations and risk of bias associated with the use of relative abundance due to technical variation, which may lead to erroneous interpretations founded on proportional profiling.
“However, concerns have been raised regarding the limitations and risk of bias associated with the use of relative abundance due to technical variation, which may lead to erroneous interpretations founded on proportional profiling.717,718”
From Microbiota–gut–brain axis and its therapeutic applications in neurodegenerative diseases (2024) · cites this paper as [717]
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Cited by
Sorted by citations
Microbiota–gut–brain axis and its therapeutic applications in neurodegenerative diseases
Loh, J. S., Mak, W. Q., Tan, L. K. S., Ng, C. X., Chan, H. H., Yeow, S. H., Foo, J. B., Ong, Y. S., How, C. W., & Khaw, K. Y. (2024) · Signal Transduction and Targeted Therapy · doi:10.1038/s41392-024-01743-1 · Cited by 1,193 · see citing works
Quantifying bias introduced by sample collection in relative and absolute microbiome measurements
Maghini, D. G., Dvorak, M., Dahlen, A., Roos, M., Doyle, B., Kuersten, S., & Bhatt, A. S. (2024) · Nature Biotechnology · doi:10.1038/s41587-023-01754-3 · Cited by 116 · see citing works
- Authors
- Nearing, J. T., Comeau, A. M., & Langille, M. G. I.
- Affiliations
- Dalhousie University (CA)
- Corresponding author
- Langille, Morgan G. I.
- Venue
- Microbiome
- Published
- 2021-05-18
- Volume
- 9
- Issue
- 1
- Pages
- 113-113
- ISSN
- 2049-2618 (ISSN-L)
- PMC
- PMC8132403
- OpenAlex
- W3162248102
- Cited by
- 240
- References
- 168
- Citations by year
- 2026: 41 · 2025: 57 · 2024: 53 · 2023: 55 · 2022: 27 · 2021: 5
- FWCI
- 4.01
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Microbiome (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Nova Scotia Health Research Foundation
- Faculty of Graduate Studies, Dalhousie University
- Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada (2016-05039)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
- Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
- Keywords
- human microbiome, sequencing bias, bias mitigation, sample collection, microbial community composition, reproducibility, metagenomics
- MeSH terms
- Humans, Specimen Handling, Bias, Sequence Analysis, DNA, Metagenomics, Microbiota
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