Table 2. Anti-P antibodies in patients with autoimmune hepatitis and systemic lupus erythematous.

Anti-P assay	AIH			SLE		%	p value
	Positive	Negative	%	Positive	Negative
CLIA	5*	137	3.5	10	50	16.7	<0.001
ELISA	0	103	0	-	-	-

* Only three of these five patients had the anti-P antibody reactivity confirmed by western blot.

AIH: autoimmune hepatitis; SLE: systemic lupus erythematosus; CLIA: chemiluminescence assay; ELISA: enzyme-linked immunosorbent assay.