Dystonic Tremor in Adult-onset DYT-KMT2B

KMT2B-related dystonia (DYT28, DYT-KMT2B) is an inherited dystonia that generally begins in the lower limbs during childhood and evolves into generalized dystonia. We herein report a case of adult-onset DYT28 with dystonic tremor. A 27-year-old woman initially displayed right upper limb and cervical tremors over the course of 1 year. A neurological examination also revealed cervical and lower limb dystonia. Although the disease generally develops during childhood, we diagnosed the woman with DYT28, as genetic testing re-vealed a mutation in KMT2B. Adult-onset patients with DYT28 might also show uncommon symptoms as well as DYT-TOR1A (DYT1).

Automated summary

We report a case of adult-onset DYT28 with dystonic tremor, diagnosed based on genetic testing revealing a mutation in KMT2B. Adult-onset patients with DYT28 may also exhibit uncommon symptoms similar to DYT-TOR1A (DYT1).