Below is an instruction from Human. Write a response.
    ### Instruction:
    Is dentatorubral-pallidoluysian atrophy inherited ?
    ### Response:
    This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition.  As the altered ATN1 gene is passed from one generation to the next, the size of the CAG trinucleotide repeat often increases in size.
    