The Car study is being done to collect real-world evidence of how commercially available MicroVention intracranial aneurysm treatment devices function and look at safety outcomes over a year when used per standard of care. The treating physician will use the device they think is most appropriate for each patient. The study will also be used to develop a full database in an effort to inform future studies and further the understanding of the safety and performance of these devices across a wide range of patient populations and disease characteristics.

The purpose of this study is to better understand how the oral microbiome (bacteria in the mouth) may be associated with different neurologic conditions like Alzheimer's disease and Multiple Sclerosis. This will require one visit, typically less than an hour. We will collect some information about the subject's past medical history including dental history as well as collect saliva and perform a nasal swab. This will also include a measure of genetics. There will be an optional blood collection. Samples will also be stored for future research.