NEFL and teratoma: Idiopathic/teratoma associated NMDAR-AE patients had lower CSF-NfL levels compared to both post-HSE and secondary NMDAR-AE patients (median 284 vs 12409 pg/mL (p<0.0001) and 2285 pg/mL (p<0.0001)) (Table 1 and Figure 3).