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  4. DBnorm as an R package for the comparison and selection of appropriate statistical methods for batch effect correction in metabolomic studies
 
research article

DBnorm as an R package for the comparison and selection of appropriate statistical methods for batch effect correction in metabolomic studies

Bararpour, Nasim
•
Gilardi, Federica
•
Carmeli, Cristian
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2021
Scientific Reports

As a powerful phenotyping technology, metabolomics provides new opportunities in biomarker discovery through metabolome-wide association studies (MWAS) and the identification of metabolites having a regulatory effect in various biological processes. While mass spectrometry-based (MS) metabolomics assays are endowed with high throughput and sensitivity, MWAS are doomed to long-term data acquisition generating an overtime-analytical signal drift that can hinder the uncovering of real biologically relevant changes. We developed “dbnorm”, a package in the R environment, which allows for an easy comparison of the model performance of advanced statistical tools commonly used in metabolomics to remove batch effects from large metabolomics datasets. “dbnorm” integrates advanced statistical tools to inspect the dataset structure not only at the macroscopic (sample batches) scale, but also at the microscopic (metabolic features) level. To compare the model performance on data correction, “dbnorm” assigns a score that help users identify the best fitting model for each dataset. In this study, we applied “dbnorm” to two large-scale metabolomics datasets as a proof of concept. We demonstrate that “dbnorm” allows for the accurate selection of the most appropriate statistical tool to efficiently remove the overtime signal drift and to focus on the relevant biological components of complex datasets.

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Type
research article
DOI
10.1038/s41598-021-84824-3
Author(s)
Bararpour, Nasim
Gilardi, Federica
Carmeli, Cristian
Sidibe, Jonathan
Ivanisevic, Julijana
Caputo, Tiziana
Augsburger, Marc
Grabherr, Silke
Desvergne, Béatrice
Guex, Nicolas  
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Date Issued

2021

Publisher

Nature Research

Published in
Scientific Reports
Volume

11

Issue

1

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
BICC  
Available on Infoscience
April 12, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/196936
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