This site seems to hint to it.
"We reviewed the notes of patients seen between January 2010 and February 2012 in two hospitals in Greater Manchester, England, who had been tested for the presence of VGKC Abs, following presentation with ‘unexplained adult onset epilepsy.’ This was defined as focal or unclassified epilepsy, with onset in adult life in patients with no history of cerebral insults and no epileptogenic lesions identified on MRI scanning using appropriate imaging protocols."
Source:
http://www.sciencedirect.com/science/ar ... 1113001830Regards