Second, there was no relationship between NMDAR1-abs titers and day of blood sampling after the stroke (median day of blood sampling in seropositive patients with low titers = 4, [IQR = 3–6]; and in patients with high titers = 4, [ IQR = 3-5]); if antibodies were formed as a consequence of the stroke, we would have expected titers to increase over time. Here, GRIN1 is linked to stroke disorder.