S1P, sphingosine 1-phosphate.
Some treatments for MS (eg, interferon-beta, natalizumab, S1P receptor modulators) can exacerbate NMOSD, leading to adverse outcomes such as increased attack frequency and worsening symptoms2,3
Recurring NMOSD attacks with incomplete recovery, even after the first attack4,5
MS relapses with near complete recovery, following a progressive course4,5
S1P, sphingosine 1-phosphate.