Fulfilling the diagnosis of radiologically isolated syndrome (RIS), clinically isolated syndrome (CIS), relapsing-remitting Multiple Sclerosis (RRMS), secondary-progressive MS (SPMS), primary-progressive MS (PPMS), neuromyelitis optica spectrum disorder (NMOSD) or Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) according to established criteria
Intending to attend hospital visits every 6 months (+/- 45 days) or 12 months (+/- 45 days) (facultative cranial MRI every 12 months) over a longer period (at least 5 years)
Intending to give blood for biobanking every 6 or 12 months during hospital visit or as close as possible to the visit (+/- 8 days)
