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2015 ; 10
(9
): e0138259
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Robustness of Massively Parallel Sequencing Platforms
#MMPMID26382624
Kavak P
; Yüksel B
; Aksu S
; Kulekci MO
; Güngör T
; Hach F
; ?ahinalp SC
; Alkan C
; Sa??ro?lu M?
PLoS One
2015[]; 10
(9
): e0138259
PMID26382624
show ga
The improvements in high throughput sequencing technologies (HTS) made clinical
sequencing projects such as ClinSeq and Genomics England feasible. Although there
are significant improvements in accuracy and reproducibility of HTS based
analyses, the usability of these types of data for diagnostic and prognostic
applications necessitates a near perfect data generation. To assess the usability
of a widely used HTS platform for accurate and reproducible clinical applications
in terms of robustness, we generated whole genome shotgun (WGS) sequence data
from the genomes of two human individuals in two different genome sequencing
centers. After analyzing the data to characterize SNPs and indels using the same
tools (BWA, SAMtools, and GATK), we observed significant number of discrepancies
in the call sets. As expected, the most of the disagreements between the call
sets were found within genomic regions containing common repeats and segmental
duplications, albeit only a small fraction of the discordant variants were within
the exons and other functionally relevant regions such as promoters. We conclude
that although HTS platforms are sufficiently powerful for providing data for
first-pass clinical tests, the variant predictions still need to be confirmed
using orthogonal methods before using in clinical applications.