The nodal/axonal binding ZIKV-GBS sera of patient A (eFigure 5D, links.lww.com/NXI/A760) showed a similar binding pattern to sera from a separate study containing anti-CNTN1 antibodies.28 Both sera maintained a similar IgG antibody binding pattern when reacted with neuronal monocultures, thereby confirming the neuronal origin of both the unknown ZIKV-GBS autoantigen and CNTN1. The gene discussed is CNTN1; the disease is Guillain-Barre syndrome.