Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Chromosome 4q deletion ?
    ### Response:
    What causes chromosome 4q deletion? People with chromosome 4q deletion are missing genetic material located on the long arm (q) of chromosome 4 in each cell. Scientists suspect that many of the features seen in people affected by this condition are caused by the deletion and/or disruption of certain genes found on 4q.
    