Compared to controls, DLB patients were significantly more likely to have a history of anxiety, depression, a family history of PD, and carry APOE4 alleles but less likely to have had cancerCompared with AD patients, DLB patients were significantly younger and more likely to be male, have a history of depression, be more educated, and have a positive family history of PD. The gene discussed is APOE; the disease is depressive symptom measurement.