Microbiome Benchmarking to Identify Perturbations in Multiple Sclerosis II

Using metagenomics, as well as clinical, immunological, and radiological observations, the investigators will investigate if active relapsing-remitting multiple sclerosis patients have a more pro-inflammatory gut microbiota signature than multiple sclerosis patients with less active disease and matched healthy controls. More specifically, the investigators will investigate whether temporal variability of the gut microbiota is related to inflammatory disease activity in multiple sclerosis, whether changes in the gut microbiota are predictive of future inflammatory disease activity in multiple sclerosis, and whether gut microbiota characteristics are predictive of the disease course after 2 years.