The present invention provides a method of treating, delaying the onset, delaying progression of, reducing the incidence of or reducing the severity of amyotrophic lateral sclerosis in a subject, the method comprising administering to a subject an agent, which interferes with IgG-A2BG2 expression, IgG-A2BG2 function or IgG-A2BG2 interaction with CD16 in said subject.