Evidence map›Paper›PMID 41100284›Full record

ArticleGigaScience2025

The enduring advantages of the SLOW5 file format for raw nanopore sequencing data.

Hasindu Gamaarachchi, Sasha Jenner, Hiruna Samarakoon, James M Ferguson, Ira W Deveson

Abstract read
In one paragraph

Article in GigaScience, 2025. 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

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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
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.

Hasindu GamaarachchiSchool of Computer Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.ORCID 0000-0002-9034-9905
Sasha JennerGenomics and Inherited Disease Program, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.
Hiruna SamarakoonSchool of Computer Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.ORCID 0000-0002-5812-1046
James M FergusonGenomics and Inherited Disease Program, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.ORCID 0000-0002-6192-6937
Ira W DevesonGenomics and Inherited Disease Program, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.ORCID 0000-0003-3861-0472

Funding

Australian Research Council DE230100178Australian Research Council DP230100651National Health and Medical Research Council 1173594National Health and Medical Research Council 2023126National Health and Medical Research Council 2035037
6 · The paper itself

Abstract

Nanopore sequencing is a widespread and important method in genomics science. The raw electrical current signal data from a typical nanopore sequencing experiment are large and complex. This can be stored in 2 alternative file formats that are presently supported: POD5 is a signal data file format used by default on instruments from Oxford Nanopore Technologies (ONT); SLOW5 is an open-source file format originally developed as an alternative to ONT's previous file format, which was known as FAST5. The choice of format may have important implications for the cost, speed, and simplicity of nanopore signal data analysis, management, and storage. To inform this choice, we present a comparative evaluation of POD5 versus SLOW5. We conducted benchmarking experiments assessing file size, analysis performance, and usability on a variety of different computer architectures. Binary SLOW5 (BLOW5) showed superior performance during sequential and nonsequential (random access) file reading on most systems, manifesting in faster, cheaper basecalling and other analysis, and we could find no instance in which POD5 file reading was significantly faster than BLOW5. We demonstrate that BLOW5 file writing is highly parallelizable, thereby meeting the demands of data acquisition on ONT instruments. Our analysis also identified differences in the complexity and stability of the software libraries for SLOW5 (slow5lib) and POD5 (pod5), including a large discrepancy in the number of underlying software dependencies, which may complicate the pod5 compilation process. In summary, many of the advantages originally conceived for SLOW5 remain relevant today, despite the replacement of FAST5 with POD5 as ONT's core file format.

Indexed as

NanoporesNanopore SequencingSoftwareGenomicsfile formatsgenomics datananoporePOD5raw signalsequencing dataSLOW5

Identifiers

PMID41100284
PMCPMC12530089

What OpenQuestion holds

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Registered trials

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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.