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LiftOver

Definition
AI-generated

LiftOver converts genomic coordinates between reference assemblies (for example GRCh37/hg19 to GRCh38/hg38) using alignment chain files, via UCSC's liftOver tool or equivalent APIs.

Topics

Why it matters in GWAS

Meta-analysis, annotation, and colocalization require a single build; mismatched positions cause missed overlap with LD reference panels or eQTL catalogs.

Example usage

"A replication step checks whether LiftOver assumptions remain stable across cohorts."

References

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