Understanding Mouse SNP Coordinate Discrepancies
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This Help document answers the following questions about genome coordinate discrepancy on the Mouse SNP Query Form.

What is the discrepancy?

The discrepancy occurs when genome coordinates for mouse genes and markers in MGI are derived from the current mouse reference genome build but the coordinates for mouse SNPs are derived from an earlier build (as, for example, when MGI genome coordinates are derived from the most recent Genome Reference Consortium reference assembly (GRCm39) but the SNP coordinates are from GRCm38).

Why does this discrepancy exist?

The discrepancy in genome coordinates between SNPs and MGI genes exists when the SNP data for the current reference genome assembly are not yet available or have not yet been updated in the public variation archives.

How does this discrepancy affect searches on the Mouse SNP Query Form?

Query Form SectionFieldDiscrepancy Impact
Marker range Genome coordinatesMarker Range function is disabled temporally, while a discrepancy exists in MGI between the genome build for mouse SNP coordinates and the genome build for mouse gene coordinates.
Marker rangeMarker rangeMarker Range function is disabled temporally, while a discrepancy exists in MGI between the genome build for mouse SNP coordinates and the genome build for mouse gene coordinates.
Associated genesSNPs Located Near GenesThis summary section is disabled until coordinate data for SNPs are derived from the same genome build as coordinate data for MGI genes.

How does the discrepancy show up in my query results?

When the discrepancy exists, information appears at the top of your Mouse SNPs Query Results -- Summary report, indicating that the mouse SNP genome coordinates derive from a different mouse genome build than the MGI genome coordinates.

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