Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to trimethylaminuria ?
    ### Response:
    Mutations in the FMO3 gene cause trimethylaminuria. This gene provides instructions for making an enzyme that breaks down nitrogen-containing compounds from the diet, including trimethylamine. This compound is produced by bacteria in the intestine during the digestion of proteins from eggs, liver, legumes (such as soybeans and peas), certain kinds of fish, and other foods.
    