Article
作者: Lee, Sunhee  ; Gonciarz, Maciej  ; Lee, Seulgi  ; Kłopocka, Maria  ; Lee, Sang Joon  ; Lee, Joon Ho  ; Hanauer, Stephen B  ; Kowalski, Maciej  ; Saenko, Daria  ; Schreiber, Stefan  ; Lee, Juhyun  ; Colombel, Jean-Frederic  ; Kim, Jong Min  ; Sardinov, Ruslan  ; Borzan, Vladimir  ; Park, Gahee  ; Osipenko, Marina  ; Smoliński, Patryk  ; Bae, Yunju  ; Sands, Bruce E  ; Kulynych, Roman  ; Lahat, Adi  ; Srećković, Slobodan  ; Kim, Sunghyun  ; Sandborn, William J  ; Gasbarrini, Antonio  ; Horyński, Marek  ; Ryu, Jae Yeoul  ; Kierkuś, Jarosław  ; Danese, Silvio  ; Valuyskikh, Ekaterina  ; Sołtysiak, Artur  ; Lee, Jimin 
Background and Aims:In the LIBERTY phase 3 studies in Crohn’s disease (CD) or ulcerative colitis (UC), maintenance CT-P13 subcutaneous (SC) 120 mg was more effective than placebo after 1 year. Here we report 2-year data from the LIBERTY open-label extensions.
 Methods:Two randomized, placebo-controlled, double-blind studies evaluated the efficacy and safety of CT-P13 SC maintenance in moderate-to-severe CD or UC. Responders to CT-P13 intravenous induction were randomized at week (W) 10 to CT-P13 SC 120 mg or placebo biweekly, until W54. From W22, dose adjustment to CT-P13 SC 240 mg was permitted for loss of response. At W56, patients could enter an open-label extension, receiving CT-P13 SC 120 mg (or 240 mg if dose-adjusted), biweekly, until W102.
 Results:The extension comprised 278/343 (81.0%) and 348/438 (79.5%) patients in the CD and UC studies, respectively. In those continuing on-study, efficacy (non-responder imputation) was well maintained in the CT-P13 SC group at W102: 63.5% (as-observed: 70.5%) and 49.0% (as-observed: 58.8%) of CD patients (N = 192) achieved clinical remission and endoscopic response, respectively; 45.1% (as-observed: 60.1%) and 41.4% (as-observed: 52.4%) of UC patients (N = 237) achieved clinical remission and endoscopic-histologic mucosal improvement, respectively. No new safety signals were identified from longer-term CT-P13 SC treatment or starting CT-P13 SC 120 mg after placebo, with similar adverse event rates for patients undergoing dose adjustment to CT-P13 SC 240 mg from CT-P13 SC 120 mg or placebo.
 Conclusion:CT-P13 SC is an effective and well-tolerated long-term maintenance treatment in moderate-to-severe CD and UC.
 ClinicalTrials.gov identifiers:NCT03945019 (CD) and NCT04205643 (UC).