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rs137854557(G;G)

From SNPedia
Miscall in Ancestry v2c data (most likely)
Is agenotype
ofrs137854557
GeneNF1
Chromosome17
Position31,214,524
mentionedby
Magnitude1
Geno Mag Summary
(A;A) 0 common in clinvar
(G;G) 1 Miscall in Ancestry v2c data (most likely)

This genotype has never been observed in public sequencing projects, and anyone with direct-to-consumer data containing it is very, very likely to simply be seeing an error by the company that produced the data. This error has been seen most commonly in Ancestry data from their "v2c" chip.