Hi,

I have a question on how indel coordinates are reported in dbsnp tables.

Here is a deletion record in dbsnp 135. Is 'start' always the 1st deleted
base or is it like the vcf format which the start is always 1bp before 1st
deleted base?

E.g.
131    chr1    61341695    61341699    rs146746778    0    +    TTTA    TTTA
-/TTTA    genomic    deletion

Fo insertion, is 'start' reported as 1bp before insertion? So in this case,
I imagine there's a CA insertion between 92536832 92536833 in 0-base
coordinates.

E.g.
161    chr1    92536832    92536832    rs72159935    0    +    -    -
-/CA    genomic    insertion

Best,
Kyle


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