Nature Medicine, Published online: 16 September 2026; doi:10.1038/s41591-026-04665-3Increased expression of EBV reactivation genes in B cells and MS risk genes targeted by the EBV protein EBNA-2 precedes MS attacks, linking EBV reactivation and genetic risk to the development of MS relapses.

Here the authors show that endogenous or therapeutically delivered GDF-15 activates brainstem neurons that trigger splenic β-adrenergic signaling. This, in turn, suppresses autoreactive T cells and re...