[R] how to remove part of the string

[Bill Hyman]

Dear all,

Does any one know how to remove part of the string?

For example, "LTA4H||Leukotriene A4 hydrolase" is a gene name plus gene description. I hope to remove "||Leukotriene A4 hydrolase". What would be the R code to do that using gsub()? Many thanks!

Bill