Hi,

I found about 3% of SNPs in hg19.snp131 table have exactly identical 
annotations (chromosome, position, observed alleles, etc) except for different 
rsIDs. An example is listed below. Is this a bug or a feature?

Thanks,
Ivan

mysql> select * from snp131 where chrom='chr1' and chromStart=12197 and 
chromEnd=12198\G
*************************** 1. row ***************************
       bin: 585
     chrom: chr1
chromStart: 12197
  chromEnd: 12198
      name: rs3871692
     score: 0
    strand: -
   refNCBI: G
   refUCSC: G
  observed: C/G
   molType: genomic
     class: single
     valid: unknown
     avHet: 0
   avHetSE: 0
      func: missense
   locType: exact
    weight: 3
*************************** 2. row ***************************
       bin: 585
     chrom: chr1
chromStart: 12197
  chromEnd: 12198
      name: rs62635282
     score: 0
    strand: +
   refNCBI: G
   refUCSC: G
  observed: C/G
   molType: genomic
     class: single
     valid: unknown
     avHet: 0
   avHetSE: 0
      func: missense
   locType: exact
    weight: 3
2 rows in set (3.52 sec)
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