[ensembl-dev] Disappeared Variation synonyms

Anja Thormann anja at ebi.ac.uk
Wed Jun 27 18:03:30 BST 2012

Hello John,

for release 67 we built a new rat variation database with the dbSNP import version 136 and we retired variants called with the ensembl pipeline.
I can provide you with a file that maps ENSSNP ids to the variation rs-ids from the current database.

On 27 Jun 2012, at 17:17, Ma, Man Chun John wrote:

> Hi all,
> V67's inclusion of dbSNP 136 updates for rat is clearly good news, as this bridged a gap between the two databases (many Ensembl rat SNPs were pulled from dbSNP post-130 and they were not re-included into dbSNP for the past 3 years).
> However, when I attempted to access one of those SNPs I haven't been able to locate them using the previous ENSSNP IDs. After searching for the SNPs in question by using genomic coordinates, I've noticed the v67 entry included none of the synonyms listed in v66.
> For example:
> rs105805725 in v67 (http://www.ensembl.org/Rattus_norvegicus/Variation/Summary?db=core;r=17:39585392-39585392;source=dbSNP;v=rs105805725;vdb=variation;vf=5120020) vs rs65331131 aka ENSRNOSNP971187 in v66: (http://feb2012.archive.ensembl.org/Rattus_norvegicus/Variation/Summary?r=17:39584892-39585892;source=dbSNP;v=rs65331131;vdb=variation;vf=3051002). They are essentially the same Variation (same position and alleles and even individual genotypes), yet the v67 entry did not include any synonyms seen in v66.
> Due to the issue mentioned in the beginning of the email, any rs# for these SNPs in pre-v67 are de jure invalid, and our lab relied on the ENSSNP ID for identification. I hope those ENSSNP IDs have not been retired so abruptly right?
> Cheers,
> John MC Ma
> Graduate Assistant
> Kwitek Lab
> Department of Pharmacology
> 3125E MERF
> 375 Newton Road
> Iowa City IA 52242
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