Evidence map›Paper›PMID 26966283›Full record

ArticleBriefings in bioinformatics2017

Effect of lossy compression of quality scores on variant calling.

Idoia Ochoa, Mikel Hernaez, Rachel Goldfeder, Tsachy Weissman, Euan Ashley

Abstract read
In one paragraph

Article in Briefings in bioinformatics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. A Framework for Compressive On-Chip Action Potential Recording.IEEE transactions on bio-medical engineering · 2026
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  13. Denoising of Aligned Genomic Data.Scientific reports · 2019
    Article
  14. SPRING: a next-generation compressor for FASTQ data.Bioinformatics (Oxford, England) · 2019
    Article
  15. Article
  16. Article
  17. GeneComp, a new reference-based compressor for SAM files.Proceedings. Data Compression Conference · 2017
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  18. Article
  19. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Idoia OchoaElectrical Engineering department, 350 Serra Mall, Stanford, CA, USA.
Mikel HernaezDepartment of Electrical Engineering, Stanford University, Stanford, CA, USA.
Rachel GoldfederDepartment of Electrical Engineering, Stanford University, Stanford, CA, USA.
Tsachy WeissmanDepartment of Electrical Engineering, Stanford University, Stanford, CA, USA.
Euan AshleyDepartment of Medicine, Stanford University, Stanford, CA, USA.

Funding

POSTDOCTORAL TRAINING IN MEDICAL INFORMATION SCIENCEST15LM007033 · NLM · STANFORD UNIVERSITY · PI SYLVIA KATINA PLEVRITIS · 1985 to 2026
$25.5M
Genomic Compression: From Information Theory to Parallel AlgorithmsU01CA198943 · NCI · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI MILENKOVIC, OLGICA, WEISSMAN, TSACHY · 2015 to 2017
$1.4M
NCI NIH HHS U01 CA198943NLM NIH HHS T15 LM007033
6 · The paper itself

Abstract

Recent advancements in sequencing technology have led to a drastic reduction in genome sequencing costs. This development has generated an unprecedented amount of data that must be stored, processed, and communicated. To facilitate this effort, compression of genomic files has been proposed. Specifically, lossy compression of quality scores is emerging as a natural candidate for reducing the growing costs of storage. A main goal of performing DNA sequencing in population studies and clinical settings is to identify genetic variation. Though the field agrees that smaller files are advantageous, the cost of lossy compression, in terms of variant discovery, is unclear.Bioinformatic algorithms to identify SNPs and INDELs use base quality score information; here, we evaluate the effect of lossy compression of quality scores on SNP and INDEL detection. Specifically, we investigate how the output of the variant caller when using the original data differs from that obtained when quality scores are replaced by those generated by a lossy compressor. Using gold standard genomic datasets and simulated data, we are able to analyze how accurate the output of the variant calling is, both for the original data and that previously lossily compressed. We show that lossy compression can significantly alleviate the storage while maintaining variant calling performance comparable to that with the original data. Further, in some cases lossy compression can lead to variant calling performance that is superior to that using the original file. We envisage our findings and framework serving as a benchmark in future development and analyses of lossy genomic data compressors.

Indexed as

Databases, GeneticAlgorithmsData CompressionGenomeGenomicsHumansSequence Analysis, DNAGenomic data; lossy compression; quality scores; variant calling

Identifiers

PMID26966283
PMCPMC5862240

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.