Variant annotations in non-coding regions refer to which exact positions on mRNA?

Question

[garimav89]

Kindly make me understand what does these annotations "1525-61A>G", "1716+77C>T" in non coding region means in SNP identification? Where are exactly these positions located?

Answer 1

[R Ravi]

Hi Garima,

These variants belongs to an interonic region, where "1525-61A>G" refers to 61 bases before 1525 which is a start point of one of the exons. Similarly "1716+77C>T" refers to a variant at 77th bases after 1716 which is an end of another of the exon.

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[garimav89]

Thanks Ravi. I got it