Long-term Outcomes after the Discontinuation of Anti-TumorNecrosis Factor-α Therapy in Patients with Inflammatory BowelDisease under Clinical Remission: A Korean Association for the Study of Intestinal Disease Multicenter Study
	    		
		   		
		   			
		   		
	    	
    	- Author:
	        		
		        		
		        		
			        		Joo Hye SONG
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Eun Ae KANG
			        		
			        		;
		        		
		        		
		        		
			        		Soo-Kyung PARK
			        		
			        		;
		        		
		        		
		        		
			        		Sung Noh HONG
			        		
			        		;
		        		
		        		
		        		
			        		You Sun KIM
			        		
			        		;
		        		
		        		
		        		
			        		Ki Bae BANG
			        		
			        		;
		        		
		        		
		        		
			        		Kyeong Ok KIM
			        		
			        		;
		        		
		        		
		        		
			        		Hong Sub LEE
			        		
			        		;
		        		
		        		
		        		
			        		Sang-Bum KANG
			        		
			        		;
		        		
		        		
		        		
			        		Seung Yong SHIN
			        		
			        		;
		        		
		        		
		        		
			        		Eun Mi SONG
			        		
			        		;
		        		
		        		
		        		
			        		Jong Pil IM
			        		
			        		;
		        		
		        		
		        		
			        		Chang Hwan CHOI
			        		
			        		;
		        		
		        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Original Article
 - From:Gut and Liver 2021;15(5):752-762
 - CountryRepublic of Korea
 - Language:English
 - 
		        	Abstract:
			       	
			       		
				        
				        	Background/Aims:Our study aimed to evaluate the long-term outcomes and risk factors forrelapse after anti-tumor necrosis factor (TNF)-α cessation in inflammatory bowel disease (IBD) patients because they are not well established. 
				        	
Methods:A retrospective multicenter cohort study was conducted involving patients with Crohn’s disease (CD) or ulcerative colitis (UC) from 10 referral hospitals in Korea who discontinued firstline anti-TNF therapy after achieving clinical remission.
Results:A total of 109 IBD patients (71 CD and 38 UC) with a median follow-up duration of 56months were analyzed. The cumulative relapse rates at 1, 3, and 5 years were 11.3%, 46.7%, and 62.5% for CD patients and 28.9%, 45.3%, and 60.9% for UC patients. Multivariable Coxanalysis revealed that discontinuation owing to the clinician’s decision was associated with lower risk of relapse (vs patient’s preference: hazard ratio [HR], 0.13; 95% confidence interval [CI], 0.04 to 0.48; p=0.002) and adalimumab use was associated with higher risk of relapse (vs infliximab: HR, 4.42; 95% CI, 1.24 to 17.74; p=0.022) in CD patients. Mucosal healing was associated with lower risk of relapse (vs nonmucosal healing: HR, 0.12; 95% CI, 0.02 to 0.83; p=0.031) in UC patients. Anti-TNF re-induction was provided to 52 patients, and a response was obtained in 50 patients. However, 25 of them discontinued retreatment owing to a loss of response (n=15), the patient’s preference (n=6), and other factors (n=4).
Conclusions:More than 60% of IBD patients in remission under anti-TNF therapy relapsed within 5 years of treatment cessation. Anti-TNF re-induction was effective. However, half of the patients discontinued anti-TNF therapy, and 50% of these patients discontinued treatment owing to loss of response. 
            