The importance of study design for detecting differentially abundant features in high-throughput experiments.

Autor: Luo H, Li J, Chia BK, Robson P, Nagarajan N
Jazyk: angličtina
Zdroj: Genome biology [Genome Biol] 2014 Dec 03; Vol. 15 (12), pp. 527. Date of Electronic Publication: 2014 Dec 03.
DOI: 10.1186/s13059-014-0527-7
Abstrakt: High-throughput assays, such as RNA-seq, to detect differential abundance are widely used. Variable performance across statistical tests, normalizations, and conditions leads to resource wastage and reduced sensitivity. EDDA represents a first, general design tool for RNA-seq, Nanostring, and metagenomic analysis, that rationally selects tests, predicts performance, and plans experiments to minimize resource wastage. Case studies highlight EDDA's ability to model single-cell RNA-seq, suggesting ways to reduce sequencing costs up to five-fold and improving metagenomic biomarker detection through improved test selection. EDDA's novel mode-based normalization for detecting differential abundance improves robustness by 10% to 20% and precision by up to 140%.
Databáze: MEDLINE