Epilepsy is a disorder of the brain in which people have repeated seizures. Autoimmune encephalitis (AE) is a rare cause of epilepsy. It is an inflammatory disease of the brain. This means that the body's own immune system attacks healthy brain tissue, just like it would if it were infected by a virus or a bacteria, by producing an army of proteins called 'antibodies' which go on to 'attack' healthy tissues. Seizures in AE typically do not respond well to classic 'anti-seizure medications'. Instead, medications which suppress the immune system are used. These can have significant side-effects and some patients will still continue to have seizures or experience a recurrence of AE-related epilepsy despite treatment. It is difficult to accurately predict who will experience these outcomes. This study aims to find ways of predicting and monitoring which people with AE are at greatest risk of these outcomes, so we can better direct them towards appropriate treatments. We will collect clinical information and samples of blood and cerebrospinal fluid (CSF, fluid surrounding the brain and spinal cord) from people with AE and 'control' participants with other neurological illnesses. Samples will be analysed for markers which may help predict or correlate with outcomes in AE and better understand this condition.
Study Type
OBSERVATIONAL
Enrollment
50
Observational study
Seizure frequency
\>50% improvement in seizure frequency over time
Time frame: 1-3 years
Functional status
Modified Rankin score
Time frame: 1-3 years
Cognitive ability
As measured by the Addenbrooke's Cognitive Examination.
Time frame: 1-3 years
Clinical status
As measured by the Clinical Assessment of severity in Autoimmune Encephalitis.
Time frame: 1-3 years
Mood/affect
Measured by the hospital anxiety and depression index
Time frame: 1-3 years
Quality of life
EQ-5D-5L (By EuroQOL, not an abbreviation)
Time frame: 1-3 years
Pain
Patient-Reported Outcomes Measurement Information System (PROMIS) Pain interference short form A
Time frame: 1-3 years
Fatigue
Fatigue Scale for Motor and Cognitive Funcitons
Time frame: 1-3 years
Fatigue
Modified Fatigue and Impact Scale
Time frame: 1-3 years
Sleep Quality
Pittsburgh Sleep Quality Index
Time frame: 1-3 years
Impulsivity
Barratt Impulsivity Index
Time frame: 1-3 years
Neuropsychiatric symptoms
Neuropsychiatric Inventory
Time frame: 1-3 years
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