The mean age at onset in DYT6 is 24.4 years (range, 2-62 years),4 and the most common site of onset is the upper limb (47%) followed by cranial dystonia (25%), cervical dystonia (23%), and rarely leg dystonia (17%).4,5 In more than half of DYT6 patients, dystonia spreads to become generalized or multifocal, which contrasts our DYT24 patients.2,4–8 Recently, mutations in GNAL have also been identified to cause craniocervical dystonia.9 The average age of dystonia onset in those patients was 31.3 years (range, 7-54 years). This evidence concerns the gene GNAL and Dystonia.