Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Donnai-Barrow syndrome ?
    ### Response:
    Donnai Barrow syndrome is an inherited disorder that affects many parts of the body. People with this condition generally have characteristic facial features, severe sensorineural hearing loss, vision problems and an absent or underdeveloped corpus callosum (the tissue connecting the left and right halves of the brain).
    