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Can KING relatedness software be set to ignore FID?

Hi all,

I'm using KING to determine relatedness and duplicated samples in a dataset. The FID column in my fam files has been used for batch IDs, and doesn't refer to family relatedness at all. Will this have an impact on KING? Can I set KING to ignore FID and work only using IID?

relationship software inference king relatedness ibd

You can just replace the FID with random non-duplicated IDs (e.g. numbers), then KING will treat each individual as if they are not from the same family

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