Below is an instruction from Human. Write a response.
    ### Instruction:
    Is lymphangioleiomyomatosis inherited ?
    ### Response:
    Sporadic LAM is not inherited. Instead, researchers suggest that it is caused by a random mutation in the TSC1 or TSC2 gene that occurs very early in development. As a result, some of the body's cells have a normal version of the gene, while others have the mutated version.
    