Below is an instruction from Human. Write a response.
    ### Instruction:
    Is spinocerebellar ataxia type 1 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. An affected person usually inherits the altered gene from one affected parent. However, some people with SCA1 do not have a parent with the disorder.
    