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Distinguish rare germline mutation from somatic mutation

For rare germline mutation (frequency < 0.05), how can we distinguish them from somatic mutation from NGS data.

Thanks for answering the question

snp

What do you mean by a rare germline mutation? Are you sequencing a mixture of genomes?

PS Are you sure that a mutation with less than 5% frequency is not a sequencing error?

Minor allele frequency (MAF) refers to the frequency at which the least common allele occurs in a given population and is unrelated to the variant allele frequency of a somatic mutation.

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