Hot topics in MS

I was asked yesterday to list what I considered to be the "hottest" research topics in MS; the following is my list:
  1. EBV
  2. Vitamin D
  3. B cells
  4. DMTs: BG12, neuroprotectants (Fingolimod and sodium channel blockers), Alemtuzumab & Anti-CD20 therapy
  5. Cortical pathology
  6. Symptomatic therapies (cognition, fatigue and spasticity)
Please note CCSVI is not on the list!