Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the genetic changes related to congenital cataracts, facial dysmorphism, and neuropathy ?
    ### Response:
    A mutation in the CTDP1 gene causes CCFDN. The CTDP1 gene provides instructions for making a protein called carboxy-terminal domain phosphatase 1. This protein helps regulate the process of transcription, which is a key step in using the information carried by genes to direct the production (synthesis) of proteins.
    