Screening for FMR1 expanded alleles in patients with parkinsonism in mainland China

► Firstly evaluated the roles for expanded FMR1 alleles in parkinsonians in mainland China. ► The association between GZ alleles and parkinsonism is only found in female patients. ► The GZ alleles may not linked to POF in Chinese women. ► A parkinsonian with GZ alleles has slight wmh on MRI in the basis pontis.