Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to trichothiodystrophy ?
    ### Response:
    Most cases of the photosensitive form of trichothiodystrophy result from mutations in one of three genes: ERCC2, ERCC3, or GTF2H5. The proteins produced from these genes work together as part of a group of proteins called the general transcription factor IIH (TFIIH) complex.
    