Table 4. Serum levels of each factor based on disease activity at each interval and according to pre-or post-response to IFX.

		IFX trough ug/mL	IFX post infusion ug/mL	TNF trough pg/mL	TNF post-infusion pg/mL	ATI trough AU/mL	ATI post infusion AU/mL
Disease activity pre infusion	Active	6.8	158.2	92.0	54.2	45.2	11.6
	Inactive	7.5	175.5	53.8	59.3	60.1	28.7
Disease activity at infusion	Active	9.0	171	89.1	68.1	31.0	7.0
	Inactive	2.1	142	64.7	37.9	91.2	37.5
Disease activity post infusion	Active	7.9	156.8	96.2	63.1	44.9	12.0
	Inactive	5.3	173.9	57.1	49.3	56.9	23.6
Drug response pre infusion	Yes	7.9	164.9	83.2	36.9	43.6	14.3
	No	2.6	150.8	65.4	61.2	75.4	23.7
Drug response post infusion	Yes	7.5	162.8	74.3	53.7	52.8	17.5
	No	3.6	160.7	115.9	79.3	21.8	4.8