Below is an instruction from Human. Write a response.
    ### Instruction:
    Is Polycythemia vera inherited ?
    ### Response:
    Is polycythemia vera inherited? Most cases of polycythemia vera (PCV) are not inherited from a parent and are acquired during a person's lifetime. The condition is associated with genetic changes (mutations) that are somatic, which means they occur in cells of the body but not in egg and sperm cells.
    