Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) van der Woude syndrome ?
    ### Response:
    Van der Woude syndrome is a condition that affects the development of the face. Many people with this disorder are born with a cleft lip, a cleft palate (an opening in the roof of the mouth), or both. Affected individuals usually have depressions (pits) near the center of the lower lip, which may appear moist due to the presence of salivary and mucous glands in the pits.
    