Below is an instruction from Human. Write a response.
    ### Instruction:
    Is desmoid tumor inherited ?
    ### Response:
    Most desmoid tumors are sporadic and are not inherited. Sporadic tumors result from gene mutations that occur during a person's lifetime, called somatic mutations. A somatic mutation in one copy of the gene is sufficient to cause the disorder. Somatic mutations in either the CTNNB1 or the APC gene can cause sporadic desmoid tumors.
    