Characterization of Immune-response in Autoimmune Encephalitis and Paraneoplastic Neurological Syndromes

What this Trial Is About

Researchers are studying autoimmune encephalitis (AE) and paraneoplastic neurological syndromes (PNS), which are rare immune-related brain disorders that show a variety of symptoms and are difficult to diagnose. Although these conditions can mimic other diseases like neurodegenerative disorders or infections, identifying them is important because patients may respond well to immunotherapy. The study focuses on detecting specific autoantibodies in blood and cerebrospinal fluid that may help confirm the diagnosis and predict treatment response, but many cases lack identifiable antibodies, leading to challenges in treatment and understanding the disease mechanisms. This observational study collects clinical data and biological samples such as blood, DNA, cerebrospinal fluid, and cells from patients with suspected AE or PNS. The study groups include patients with well-known antibodies, those with unusual antibodies, and those without detectable antibodies. Samples are stored in biobanks and analyzed without changing the patients' usual diagnostic or treatment procedures. Genetic and immunology tests are performed to better understand immune responses and disease characteristics. Participants provide clinical information and biological specimens, which are used to analyze correlations between laboratory findings and clinical symptoms over about one year. The study does not alter standard care but gathers data to improve knowledge of AE and PNS. Researchers monitor results throughout the study to identify links between immune markers and patient outcomes, aiming to find better ways to predict treatment effectiveness and disease progression.

Characterization of Immune-response in Autoimmune Encephalitis and Paraneoplastic Neurological Syndromes