In contrast, the levels of CSF IFN-γ and TNF-α were similar to those of plasma IFN-γ and TNF-α in both GBS patients and the HC, and there was no significant difference in the levels of CSF IFN-γ and TNF-α between the GBS patients and the HC in this population. The gene discussed is IFNG; the disease is Guillain-Barre syndrome.