Figure 2.

Kappa free light chain (KFLC) index in clinically isolated syndrome. (A) The KFLC index defined as (KFLC in CSF/KFLC in serum) divided by albumin quotient (albumin in CSF/albumin in serum) in patients with clinically isolated syndrome who converted to multiple sclerosis during follow-up compared between patients with positive (dots) and negative oligoclonal bands (squares). (B) The KFLC index in patients with stable clinically isolated syndrome compared between patients with positive (dots) and negative oligoclonal bands (squares).