Finally, a study that analyzed the transcriptome datasets from seropositive or seronegative patients for CMV, EBV, and HHV6 and PD patients showed that patients infected with these herpesviruses shared the differentially expressed genes BCL6, GYG1, RBCK1, TIMP2, and CIRBP with PD patients [90]. Here, CIRBP is linked to Parkinson disease.