Intrathecal Plasma Cell Activity as Measured by the Kappa Free Light Chain Index Is Associated With Retinal Layer Atrophy in Early Multiple Sclerosis.

Berek K, Schmidauer M, Föttinger F, Auer M, Berger T, Di Pauli F, Escola L V, Hofer T, Kremser B, Mangesius S, et al.

Eur J Neurol. 2026 Sep; 33(9):e70759. PMID: 42760869. Abstract