Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Chromosome 3p- syndrome ?
    ### Response:
    Chromosome 3p- syndrome is a rare chromosome abnormality that occurs when there is a missing copy of the genetic material located towards the end of the short arm (p) of chromosome 3. The severity of the condition and the signs and symptoms depend on the exact size and location of the deletion and which genes are involved.
    