SGCE and myoclonus-dystonia syndrome: For instance, in a patient with a positive family history of paternally inherited myoclonus dystonia that occurs in the first decade of life and manifests predominantly in the neck and upper limbs (Weissbach et al. 2020), the SGCE gene should be sequenced as this patient is likely to suffer from SGCE-related myoclonus dystonia (MYC/DYT-SGCE).