Map Gene Symbols to Genomic Positions Using biomaRt — map_gene_to_chrbp_using

This function queries gene symbols for their genomic positions (chromosome, start, end, strand) using Ensembl's biomaRt for the specified genome assembly ("hg19" or "hg38").

Usage

map_gene_to_chrbp_using_biomaRt(
  genes,
  gene_col = NULL,
  genome = c("hg19", "hg38")
)

Arguments

genes: A character vector of gene symbols to query, or a data frame containing gene symbols.
gene_col: The column name of gene symbols if genes is a data frame.
genome: The genome assembly to use: "hg19" or "hg38".

Value

A data frame with the original data and new columns: chr, bp_start, bp_end, strand, gene_symbol.

Details

If the input is a data frame, the function retains all existing columns and adds new columns with the mapping results.

Examples

if (FALSE) { # \dontrun{
# Query location of TP53, BRCA1, and EGFR genes
gene_symbols <- c("TP53", "BRCA1", "EGFR")
map_gene_to_chrbp_using_biomaRt(genes = gene_symbols, genome = "hg19")

# Using a data frame with gene symbols
gene_symbols_df <- data.frame(GeneName = gene_symbols, OtherInfo = c(1, 2, 3))
map_gene_to_chrbp_using_biomaRt(genes = gene_symbols_df, gene_col = "GeneName", genome = "hg19")
} # }