# \#bugfix

**URL:** https://discuss.gnomad.broadinstitute.org/tag/bugfix/2.md

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## [Nhomalt\_grpmax and nhomalt\_grpmax\_non\_ukb sometimes overflow (~2 billion)](https://discuss.gnomad.broadinstitute.org/t/nhomalt-grpmax-and-nhomalt-grpmax-non-ukb-sometimes-overflow-2-billion/154)

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**Author:** [@gaberudy](https://discuss.gnomad.broadinstitute.org/u/gaberudy)\
**Replies:** 1\
**Last updated:** [February 1, 2024, 3:54pm UTC](https://discuss.gnomad.broadinstitute.org/t/nhomalt-grpmax-and-nhomalt-grpmax-non-ukb-sometimes-overflow-2-billion/154 "2024-02-01T15:54:52Z")

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Sometimes the nhomalt field seem to “underflow” into a number of signed int max. Here for example is the values for 1: 12,235 G/A for the fields nhomalt\_grpmax and nhomalt\_grpmax\_non\_ukb in the VCF files: nhomalt\_grpma…

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## [Invalid INFO field "vep" in gnomad v4 VCFs](https://discuss.gnomad.broadinstitute.org/t/invalid-info-field-vep-in-gnomad-v4-vcfs/95)

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**Author:** [@Christophe](https://discuss.gnomad.broadinstitute.org/u/Christophe)\
**Replies:** 4\
**Last updated:** [January 10, 2024, 12:14am UTC](https://discuss.gnomad.broadinstitute.org/t/invalid-info-field-vep-in-gnomad-v4-vcfs/95 "2024-01-10T00:14:43Z")

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Hi, There seems to be an error in the vcf files (at least in genome versions, I did not look at exome) in the INFO column, for the field vep. Files investigated: 64.64 GiB 2023-11-01T00:03:45Z gs://gcp-public-data--…

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## [Contrasting links to the chrY VCF for v4.0 exomes](https://discuss.gnomad.broadinstitute.org/t/contrasting-links-to-the-chry-vcf-for-v4-0-exomes/99)

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**Author:** [@tsol](https://discuss.gnomad.broadinstitute.org/u/tsol)\
**Replies:** 1\
**Last updated:** [December 14, 2023, 2:15pm UTC](https://discuss.gnomad.broadinstitute.org/t/contrasting-links-to-the-chry-vcf-for-v4-0-exomes/99 "2023-12-14T14:15:32Z")

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Hi, It looks like the November 16, 2023 update to the chrY VCF for v4.0 exomes was only made to the Google stored version of the file and not to the Amazon or Microsoft stored versions.

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## [Fix Gene page "export to CSV" genetic ancestry group data values](https://discuss.gnomad.broadinstitute.org/t/fix-gene-page-export-to-csv-genetic-ancestry-group-data-values/89)

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**Author:** [@rhgrant](https://discuss.gnomad.broadinstitute.org/u/rhgrant)\
**Replies:** 0\
**Last updated:** [December 5, 2023, 9:26pm UTC](https://discuss.gnomad.broadinstitute.org/t/fix-gene-page-export-to-csv-genetic-ancestry-group-data-values/89 "2023-12-05T21:26:49Z")

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On the gene page, users can download the information present in the variant table to a CSV file for local usage. With the release of v4, this CSV file contained faulty counts for AC, AN, AF, and Number of Homozygotes for…