<p>Whenever you are wondering about things like this, just look up the identifier on the Ensembl web page. If you <a href="http://www.ensembl.org/Mus_musculus/Gene/Idhistory?g=ENSMUSG00000083840" rel="nofollow noreferrer">look up</a> <code>ENSMUSG00000083840</code>, you will see:</p>

<blockquote>
  <p>This identifier is not in the current EnsEMBL database</p>
</blockquote>

<p>In this case, it doesn't seem to have been replaced by anything and it wasn't a protein coding gene, so it looks like it was simply a wrong annotation which has been removed. </p>

CC BY-SA 3.0
2018-04-19T08:54:34.273Z
2018-04-20T07:35:29.153Z
2018-04-20T07:35:29.153Z
terdon
<p>I am supplying to <code>BioMart</code> <code>81</code> <code>ensemblID</code>s, but getting <code>80</code> results where <code>1</code> <code>ensembleID</code>: <code>ENSMUSG00000083840</code> is absent. What does it mean if <code>BioMart</code> can not find the gene? Does it mean that it is a non-coding one or that there is just no symbol attached to it? Here is my <code>BioMart</code> query:</p>

<pre><code>library('biomaRt')
mart &lt;- useDataset("mmusculus_gene_ensembl", useMart("ensembl"))
genes &lt;- rownames(mat)
G_list &lt;- getBM(filters= "ensembl_gene_id", attributes= 
c("ensembl_gene_id","mgi_symbol","description"),values=genes,mart= mart)
</code></pre>

<r><biomart>
BioMart does not return a result
# BioMart does not return a result

(Asked by: username_0 on 2018-04-18)

I am supplying to BioMart 81 ensemblIDs, but getting 80 results where 1 ensembleID: ENSMUSG00000083840 is absent. What does it mean if BioMart can not find the gene? Does it mean that it is a non-coding one or that there is just no symbol attached to it? Here is my BioMart query:
library('biomaRt')
mart <- useDataset("mmusculus_gene_ensembl", useMart("ensembl"))
genes <- rownames(mat)
G_list <- getBM(filters= "ensembl_gene_id", attributes= 
c("ensembl_gene_id","mgi_symbol","description"),values=genes,mart= mart)

**Tags:** r, biomart

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## 1 answers

### Answer by username_1 on 2018-04-19. Score: 9 | Accepted answer

Whenever you are wondering about things like this, just look up the identifier on the Ensembl web page. If you [look up](http://www.ensembl.org/Mus_musculus/Gene/Idhistory?g=ENSMUSG00000083840) `ENSMUSG00000083840`, you will see:

> This identifier is not in the current EnsEMBL database

In this case, it doesn't seem to have been replaced by anything and it wasn't a protein coding gene, so it looks like it was simply a wrong annotation which has been removed.


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