Genemapped

Genemapped is a term used in genetics and bioinformatics to describe datasets, maps, or analyses in which genes are assigned precise genomic coordinates on a reference genome. It may refer to the act of mapping genes to locations or to a dataset that already contains such mappings. The result is a gene map or gene annotation aligned to a genome build.

Genemapping is typically produced by gene annotation pipelines that integrate information from transcript models, sequence alignment, and curated gene databases. The output associates each gene with a chromosomal start and end position, strand, and reference assembly (for example GRCh38 for human).

Common formats include GFF3, GTF, and BED, and data can be accessed through genome browsers such as Ensembl, NCBI Gene, and the UCSC Genome Browser. Gene mapping supports downstream analyses such as variant annotation, expression profiling, and comparative genomics.

Accurate gene mapping enables cross-study comparisons and functional interpretation, but challenges include evolving genome assemblies, changing gene models, and inconsistent nomenclature. Researchers must track assembly version and update gene identifiers as annotations are revised.

See also: genome annotation, gene annotation, genome browser, coordinate system.