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Insert size

Definition
AI-generated

Insert size is the length of the sequenced DNA fragment between the innermost bases of a read pair in paired-end sequencing (sometimes called inner distance or fragment length depending on convention).

Why it matters in GWAS

Insert size informs library QC, structural variant sensitivity, and duplicate marking; extreme or multimodal distributions can flag batch effects or sample swaps that distort association analyses.

Example usage

"Insert size metrics were summarized per lane to detect outliers before joint genotyping."

References

  • Illumina. Understanding Illumina quality scores for sequencing data.

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