Developments in high throughput sequencing – July 2016 edition

This is the fifth edition of this visualisation, previous editions were in June 2015, June 2014, October2013 and December 2012.

As before, full run throughput in gigabases (billion bases) is plotted against single-end read length for the different sequencing platforms, both on a log scale. Yes, I know a certain new instrument (different from last time) seems to be missing, hang on, I’m coming back to that…

developments_in_high_throughput_sequencing

Notable changes from the June 2015 edition

  • I added the Illumina MiniSeq
  • I added the Oxford Nanopore MinION. The read length for this instrument was based on the specifications for maximal output and number of reads from the company’s website. The two data points represent ‘regular’ and ‘fast’ modes.
  • I added the IonTorrent S5 and S5XL. You may notice that the line for this instrument has a downward slope, this is due to the fact that the 400 bp reads are only available on the 520 and 530 chip, but not the higher throughput 540 chip, making the maximum throughput for this read length lower than for the 200 bp reads.

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Developments in high throughput sequencing – June 2015 edition

This is the fourth edition of this visualisation, previous editions were in June 2014, October 2013 and December 2012.

As before, full run throughput in gigabases (billion bases) is plotted against single-end read length for the different sequencing platforms, both on a log scale. Yes, I know a certain new instrument seems to be missing, hang on, I’m coming back to that…

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Developments in next generation sequencing – June 2014 edition

This is the third edition of this visualisation, previous editions were in October 2013 and December 2012.

As before, full run throughput in gigabases (billion bases) is plotted against single-end read length for the different sequencing platforms, both on a log scale:

Developments in next generation sequencing June 2014

 

 

 

 

 

 

 

 

 

 

 

 

 

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Developments in next generation sequencing – a visualisation

With this post I present a figure I’ve been working on for a while now. With it, I try to summarise the developments in (next generation) sequencing, or at least a few aspects of it. I’ve been digging around the internet to find the throughput metrics for the different platforms since their first instrument version came out. I’ve summarised my findings in the table at the end of this post. Then, I visualised the results by plotting throughput in raw bases versus read length in the graph below.

Developments in next generation sequencing. http://dx.doi.org/10.6084/m9.figshare.100940

Developments in next generation sequencing. http://dx.doi.org/10.6084/m9.figshare.100940

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How to sequence a bacterial genome at the end of 2012

A potential user (‘customer’) of our sequencing platform asked how to generate reference genomes for his 4 bacterial strains. His question inspired me to write this post. The suggestions below are not absolute, just my thoughts on how one these days could go about sequencing a bacterial genome using one or more of the sequencing platforms. I would appreciate any feedback/suggestions in the comments section!

Option 1: bits and pieces

  • Libraries: paired end or single end sequencing
  • Platform: one or more of Illumina MiSeq or HiSeq, Ion Torrent PGM, 454 GS FLX or GS Junior
  • Bioinformatics: assembly: Velvet, SOAPdenovo, Newbler, MIRA, Celera
  • Outcome: up to hundreds of short contigs (with only single-end reads) or contigs + scaffolds (with paired end reads)
  • Pros: fast and cheap, OK for presence/absence of e.g. genes
  • Cons: doesn’t give much insight into the genome
  • Remarks: due to per-run throughput, multiplexing is recommended; data can also be used for mapping against a reference genome instead

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My take on the sequencing buzz at #ASHG2012

Image from Wikimedia Commons. (Buzz was a low-cost airline based at London Stansted operating services to Europe. It was sold to Ryanair.)

I am not attending the American Society of Human Genetics meeting in San Fransisco, but can’t escape the buzz it creates on twitter (hashtag #ashg2012). Strikingly, it is almost another AGBT when it comes to announcements from companies selling sequencing instrument. All of them had something new to bring to the floor. This post summarizes what I picked up from twitter and a few websites, and I give a bit of my perspectives on the respective announcements. I am focussing on technology improvements, especially with regard to read lengths, not so much on applications such as cancer resequencing panels.

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