Essential tremor is not associated with α‐synuclein gene haplotypes

Abstract
A specific allele of the NACP‐Rep1 polymorphism within the α‐synuclein promoter was found to be associated both with Parkinson's disease and essential tremor. We repeated the association study on a large series of Italian patients with essential tremor using a panel of polymorphisms within the α‐synuclein gene. Our results did not confirm the association reported previously and failed to identify a α‐synuclein specific haplotype as susceptibility factor for essential tremor. © 2003 Movement Disorder Society