Offline Usage of the Go Plugin
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8 months ago
mrymkdnz • 0

I'm using VEP in offline mode. I want to add the GO terms. From what I've read, it seems like I need the --database connection. But isn't there another way to run the GO plugin offline?

ensembl go-terms vep • 1.1k views
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8 months ago
Ben_Ensembl ★ 2.4k

You will need to run the GO plugin with --database at least once in order to create the GO files for the first time. You can simply run VEP with any variant to generate the GO data, like so:

./vep --id rs699 --database --plugin GO

Afterwards, you can run your usual VEP command in the same directory and the available GO data will be automatically used by the plugin.

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As I experienced the same problem, I tried to run the command you noted down. However, I get a warning message like:

WARNING: Failed to instantiate plugin GO: Modification of a read-only value attempted at /home/tvrl/Desktop/test/.snakemake/conda/a9885697a950c8db50bdcb37d8f2cb8c_/share/ensembl-vep-108.2-0/GO.pm line 327.

I use the latest version of the package and as far as I understand, I should get .gff file as the result of this command to be used in next runs. However I got two files as:

GO.pm_homo_sapiens_110_GRCh38.gff.lock
GO.pm_homo_sapiens_110_GRCh38.gff.tmp

How to fix this situation?

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Hi tvrlisml,

Those files are only temporary files and probably mean that the first run didn't finish. Could you please delete those files and try to generate them again with the command ./vep --id rs699 --database --plugin GO

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Hi there,

Thanks for your quick response. After those files are generated, they remain empty with no lines even after the whole process is completed. I have tried removing them and running the command multiple times. However, even though I can reach the output file, .gff file is not created (nothing but these two blank temporary files). I thought there might be an issue with the perl module of GO plugin as it gives a warning message while process is in progress.

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It seems the VEP code is trying to modify a read-only variable that newer versions of Perl simply refuse to do. There is a PR to fix this (VEP_plugins#625), which will be available for next VEP release.

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Thank you for the information. I will be waiting for this to be fixed

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