[Genome] snp128.txt vs web

[Pierre LINDENBAUM]

Hi UCSC,

First of all, thanks for your great genome browser !

Here is my question about a difference between your raw files and the result seen on your browser:

I just downloaded snp128.txt from your site for hg18:

    wget "http://hgdownload.cse.ucsc.edu/goldenPath/hg18/database/snp128.txt.gz";

and grep-ed the snp named rs7254880

     gunzip -c snp128.txt.gz | grep rs7254880

     655     chr19   9270274 9270275 rs7254880       0       +       C       C       C/G     genomic (...)

ok, the position is on chr9 at 9270274

but if I search now for rs7254880 via the web interface, it gives me 

http://genome.ucsc.edu/cgi-bin/hgTracks?org=Human&db=hg18&position=rs7254880

    Simple Nucleotide Polymorphisms (dbSNP build 128) (snp128)
    rs7254880 at chr19:9270025-9270525

the position is now on chr9 at9270025 (!= 9270274 )


why such a difference ?

thank you in advance for your answer

Pierre Lindenbaum







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