Table 3. Immunoglobulin levels (mean± standard deviation) in serum of amyotrophic lateral sclerosis patients with and without bulbar onset.

Immunoglobulins	ALS patients without bulbar onset	ALS patients with bulbar onset	P
IgG	995.2±320.4	1111±116.3	P=0.3=NS
IgA	210.9±110.3	223.5±78.87	P=0.5=NS
IgM	87.66±58.76	84.56±39.40	P=0.7=NS

ALS, amyotrophic lateral sclerosis; NS, not significant.