Evidence map›Paper›PMID 28185544›Full record

ArticleBMC bioinformatics2016

PWHATSHAP: efficient haplotyping for future generation sequencing.

Andrea Bracciali, Marco Aldinucci, Murray Patterson, Tobias Marschall, Nadia Pisanti, Ivan Merelli, Massimo Torquati

Abstract read
In one paragraph

Article in BMC bioinformatics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

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3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

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4 · The record

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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

7 authors.

Andrea BraccialiComputer Science and Mathematics, School of Natural Sciences, Stirling University, Stirling, FK9 4LA, UK. abb@cs.stir.ac.uk.
Marco AldinucciDepartment of Computer Science, University of Torino, Torino, Italy.
Murray PattersonLaboratoire de Biométrie et Biologie Evolutive, University Claude Bernard, Lyon, France.
Tobias MarschallCenter for Bioinformatics, Saarland University, Saarland, Germany.
Nadia PisantiDepartment of Computer Science, University of Pisa, Pisa, Italy.
Ivan MerelliInstitute of Biomedical Technologies, National Research Council, Milan, Italy.
Massimo TorquatiDepartment of Computer Science, University of Pisa, Pisa, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHaplotype phasing is an important problem in the analysis of genomics information. Given a set of DNA fragments of an individual, it consists of determining which one of the possible alleles (alternative forms of a gene) each fragment comes from. Haplotype information is relevant to gene regulation, epigenetics, genome-wide association studies, evolutionary and population studies, and the study of mutations. Haplotyping is currently addressed as an optimisation problem aiming at solutions that minimise, for instance, error correction costs, where costs are a measure of the confidence in the accuracy of the information acquired from DNA sequencing. Solutions have typically an exponential computational complexity. WHATSHAP is a recent optimal approach which moves computational complexity from DNA fragment length to fragment overlap, i.e., coverage, and is hence of particular interest when considering sequencing technology's current trends that are producing longer fragments.

resultsGiven the potential relevance of efficient haplotyping in several analysis pipelines, we have designed and engineered PWHATSHAP, a parallel, high-performance version of WHATSHAP. PWHATSHAP is embedded in a toolkit developed in Python and supports genomics datasets in standard file formats. Building on WHATSHAP, PWHATSHAP exhibits the same complexity exploring a number of possible solutions which is exponential in the coverage of the dataset. The parallel implementation on multi-core architectures allows for a relevant reduction of the execution time for haplotyping, while the provided results enjoy the same high accuracy as that provided by WHATSHAP, which increases with coverage.

conclusionsDue to its structure and management of the large datasets, the parallelisation of WHATSHAP posed demanding technical challenges, which have been addressed exploiting a high-level parallel programming framework. The result, PWHATSHAP, is a freely available toolkit that improves the efficiency of the analysis of genomics information.

Indexed as

AlgorithmsGenome, HumanComputational BiologyGenetics, PopulationGenomicsHaplotypesHigh-Throughput Nucleotide SequencingHumansPolymorphism, Single NucleotideSequence Analysis, DNAFuture generation sequencingHaplotypingHigh-performance computing

Identifiers

PMID28185544
PMCPMC5046197

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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.