Meta - analyses seem to indicate that the SNP is not directly associated with schizophrenia , not with Alzheimer 's Disease .
Two initial studies seem to indicate that SNP is not associated with Parkinson 's Disease .
Meta - analyses seem to indicate that the SNP is not directly associated with schizophrenia , not with Alzheimer 's Disease , and two initial studies seem to indicate that it is not associated with Parkinson 's Disease .