Loftus, E

Abstract Background Health-related quality of life (HRQoL) is impaired in patients with Crohn’s disease (CD). Upadacitinib (UPA), a Janus kinase inhibitor, demonstrated efficacy and safety in the phase 3 U-EXCEED (NCT03345836) and U-EXCEL (NCT03345849) induction, and U-ENDURE (NCT03345823) maintenance trials in patients with moderately to severely active CD. We assessed the effect of UPA maintenance treatment on HRQoL in patients with moderately to severely active CD from the U-ENDURE long-term extension (LTE) study. Methods Patients who completed the 52-week U-ENDURE maintenance study were eligible to participate in the LTE study, continuing their previously assigned maintenance treatment. Of the 337 patients receiving UPA (168, UPA 30 mg; 169, UPA 15 mg) in the U-ENDURE maintenance trial, a total of 244 patients (137, UPA 30 mg; 107, UPA 15 mg) were included in this analysis. All 244 patients completed week 96 of the LTE. Endpoints included percentage of patients who achieved Inflammatory Bowel Disease Questionnaire (IBDQ) response (≥16-point increase from induction baseline), IBDQ remission (total score ≥170 points), a meaningful within-person change (MWPC) of ≥ 9point increase from baseline in the Functional Assessment of Chronic Illness Therapy – Fatigue Scale (FACIT-F) and a MWPC of ≥ 4.1- and ≥3.9-point increase from baseline on the 36-item Short Form Health Survey (SF-36) physical (PCS) and mental (MCS) component summary score, respectively, at maintenance week 52 and LTE week 96. We also assessed MWPC in Work Productivity and Activity Impairment in CD (WPAI-CD) domains defined as a decrease of ≥ 6.1% in presenteeism, ≥6.5% in absenteeism, ≥7.3% in overall work impairment and ≥8.5% in activity impairment. Data were reported using nonresponder imputation. Results The proportion of patients in the UPA 30 mg group achieving HRQoL outcomes was maintained from maintenance week 52 to LTE week 96, including achievement of IBDQ response (61.3% vs 57.7%), IBDQ remission (53.3% vs 53.3%), MWPC improvement in FACIT-F (50.4% vs 40.9%), SF-36 PCS (56.9% vs 56.2%), SF-36 MCS (47.4% vs 40.9%) and MWPC improvements in WPAI-CD domains presenteeism (45.6% vs 48.1%), overall work impairment (49.4% vs 51.9%) and daily activity impairment (57.7% vs 56.9%). Patients in the UPA 15 mg group also maintained achievement of these HRQoL outcomes over time (Table). Conclusion UPA (15 and 30 mg) maintenance treatment over a 3-year period was associated with sustained and clinically meaningful disease-specific and generic HRQoL improvement in patients with moderately to severely active CD. Despite the overall trend favouring UPA 30 mg, differences in patient-reported outcomes between the 2 dose groups were small. Conflict of interest: Panés, Julián: Personal Fees: J. Panés received consultancy fees/honorarium from AbbVie, Alimentiv, Boehringer Ingelheim, Ferring, Galapagos, Genentech/Roche, GlaxoSmithKline, Janssen, Mirum, Nimbus, Pfizer, Progenity, Prometheus, Protagonist, Revolo, Sanofi, Sorriso, Spyre Therapeutics, Surrozen, Takeda, and Wasserman, and has served on data safety monitoring boards for Alimentiv, Mirum, Roche, Sorriso, Sanofi, and Surrozen Louis, Edouard: Education and Reserach Grants for my department: Abbvie, Takeda, Johnson and Johnson, Pfizer, Fresenius-Kabi, Celltrion, EG pharma, Sandoz, Falk Personal Fees for conferences, advisory boards and consultancy: Abbvie, Takeda, Ferring, Pfizer, Johnson and Johnson, Lilly, Galapagos, Celltrion, Arena, BMS, Falk, Biokuris, Fresenius-Kabi, Thabor Bossuyt, Peter: Grant support for research from AbbVie, EG Consulting fee from AbbVie, Bristol Meyers Squibb, CIRC, Galapagos, Janssen, Jeito capital, Lilly, Pentax, Pfizer, PSI-CRO, Roche, Takeda, Tetrameros Speakers fee from AbbVie, AMC ICP, Amgen, Bristol Myers Squibb, Celltrion, Dr Falk Benelux, EG, Galapagos, Globalport, Lilly, Medtalks, Materia Prima, Pentax, Springer Media Joshi, Namita: Namita Joshi is a full-time employees/contractor of AbbVie and may own AbbVie stock or options. Xuan, Si: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Shukla, Nidhi: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Dubcenco, Elena: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Aponte, Fernando: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Perkovic, Ashley: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Loftus, Jr, Edward: Grant: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, Genentech, Gilead, Janssen, Pfizer, Receptos, Robarts Clinical Trials, Takeda, Theravance, UCB. Personal Fees: AbbVie, Allergan, Amgen, Arena, Boehringer Ingelheim, Bristol-Myers Squibb, Calibr, Celgene, Celltrion, Eli Lilly, Genentech, Gilead, Iterative Scopes, Janssen, Ono Pharma, Pfizer, Sun Pharma, Takeda, UCB.

Abstract Background Global data demonstrate an inverse relationship between hospital ileoanal pouch volume and adverse outcomes, highlighting the need for quality metrics for this technically demanding procedure.1-4 Currently, there are no standardised quality indicators to define high-quality pouch surgery. This study aimed to establish international consensus on key performance indicators (KPIs) in pouch surgery. Methods A modified Delphi process was conducted among an international, multidisciplinary panel of experts. Participants were identified through professional networks, literature review, and direct email invitation; additional participants recruited via a snowball sampling approach over one month. Candidate KPIs were generated from literature review and expert input across 5 domains. Each item was rated on a 9-point Likert scale (1 = not important, 9 = critically important); consensus was predefined as ≥ 80% of respondents rating an item 7–9. Items not reaching consensus were re-rated in a second round following anonymized group feedback. Results Round 1 included 312 participants from 37 countries. Demographics (Table 1): 53% were age 45 years, 35.2% were female, and included surgeons (68.6%) and gastroenterologists (31.1%). Most (76.6%) practice at academic or university hospitals, with a median of 11 (5–17) years in practise; 78.9% perform >1 pouchoscopy per month, and 39.5% of surgeons perform 5 pouches/year. Respondents’ regions included North America (51%), Europe (26%), Oceania (9%), Asia (6%), Latin America (4%), and the Middle East/Africa (4%). Seven (18%) countries (Denmark, Lithuania, Malaysia, Norway, United Arab Emirates, Sweden, and Switzerland) reported pouch surgery is already centralised, while 70.6% agreed pouch centralisation should be implemented. Cost/logistics and professional autonomy were the most important barriers to centralisation, whereas capacity and training exposure were least important. Overall, 37/59 (62.7%) candidate KPIs reached consensus after Round 1. The Round 2 response rate was 61%, and 2 additional KPIs reached consensus (preop ileitis and long-term risk of pouchitis). Additionally, 14 of 25 (56%) informed consent items reached consensus, and 64% of respondents felt informed consent for pouch surgery requires 2 or more office visits. Consensus items were used to populate a KPIPS Checklist (Figure 1). Conclusion Through an international Delphi process, the KPIPS study identified a consensus-derived set of key performance indicators to measure quality in pouch surgery. These quality metrics provide a foundation for benchmarking outcomes and represent a critical step towards centralization and the development of designated pouch centres of excellence to improve global standards of care for pouch patients. References: 1. Worley GHT, Fearnhead NS, Brown SR, et al. Review of current practice and outcomes following ileoanal pouch surgery: Lessons learned from the ileoanal pouch registry and the 2017 ileoanal pouch report. Colorectal Dis 2018;20:913–22. 2. Giddings HL, Yang PF, Steffens D, Solomon MJ, Ng KS. Influence of hospital-level and surgeon factors on the outcomes after ileo-anal pouch surgery for inflammatory bowel disease: Systematic review. Br J Surg 2024;111. 3. Hoang CM, Maykel JA, Davids JS, et al. Distribution of elective ileal pouch-anal anastomosis cases for ulcerative colitis: A study utilizing the university health system consortium database. J Gastrointest Surg 2020;24:2613–9. 4. Moojen TB, Visser E, Reijntjes MA, et al. One-year stoma-free survival of ileoanal pouches for uc in european centers: The miracle project. Ann Surg Open 2025;6:e596. Conflict of interest: Prof. Holubar, Stefan: No conflict of interest Soop, Mattias: No conflict of interest Poskus, Tomas: No conflict of interest Neary, Peter: No conflict of interest Uchino, Tairin: No conflict of interest Yang, Song-soo: No conflict of interest Adamina, Michel: No conflict of interest Avellaneda, Nicolas Luis: No conflict of interest Barnes, Edward: No conflict of interest Brouquet, Antoine: No conflict of interest Brown, Steven Ross: No conflict of interest De Buck Van Overstraeten, Anthony: No conflict of interest Buskens, Christianne J.: No conflict of interest Chiorean, Michael: No conflict of interest Clark, David: No conflict of interest Cohen, Benjamin: No conflict of interest El Ouali, Sara: No conflict of interest Faiz, Omar Darius: No conflict of interest Fichera, Alessandro: No conflict of interest Hahnloser, Dieter: No conflict of interest Hancock, Laura: No conflict of interest Herfarth, Hans: No conflict of interest Johnston, Michael: No conflict of interest Kayal, Maia: No conflict of interest Laharie, David: No conflict of interest Liberman, Sender: No conflict of interest Loftus, Jr, Edward: No conflict of interest Moeslein, Gabriela: No conflict of interest Myrelid, Pär: No conflict of interest Poylin, Vitaliy: No conflict of interest Qazi, Taha: No conflict of interest Raffals, Laura: No conflict of interest Rubin, David T.: No conflict of interest Spinelli, Antonino: No conflict of interest Steinhagen, Emily: No conflict of interest Tozer, Philip: No conflict of interest Verstockt, Bram: No conflict of interest Warusavitarne, Janindra: No conflict of interest Wexner, Steven: No conflict of interest Winter, Desmond: No conflict of interest

Abstract Background Endoscopic healing is an important treatment goal in Crohn’s disease (CD), in line with European Crohn’s and Colitis Organisation CD guidelines, as it is associated with improved long-term disease outcomes. We assessed the relationship between endoscopic healing and long-term clinical outcomes, patient-reported outcomes (PROs) and hospitalisations in patients (pts) with moderately to severely active CD receiving upadacitinib (UPA) maintenance treatment in the U-ENDURE long-term extension (LTE) study. Methods Pts completing the 52-week U-ENDURE maintenance study were eligible to participate in the LTE study, continuing their previously assigned maintenance treatment. Pts receiving UPA 15 mg or 30 mg once daily in LTE were included in this analysis. Clinical remission based on CD activity index (CDAI <150), CDAI response (≥100-point decrease in CDAI from induction baseline), clinical remission based on stool frequency/abdominal pain (SF/AP) score (average daily soft or liquid SF ≤ 2.8 and average daily AP ≤ 1.0, and neither greater than induction baseline), Inflammatory Bowel Disease Questionnaire (IBDQ) response (≥16-point increase in total IBDQ score from induction baseline) and remission (IBDQ total score ≥170 points), Functional Assessment of Chronic Illness Therapy – Fatigue Scale (FACIT-F) response (≥9-point increase from induction baseline), and economic outcomes (CD-related hospitalisations or surgeries) were evaluated at LTE week 96. Outcomes were compared between pts who achieved vs those who did not achieve endoscopic response, endoscopic remission, or ulcer-free endoscopy (endoscopic outcomes defined in Table footnote) at maintenance week 52 using chi-square testing (nominal P values). Pts with missing outcomes at LTE week 96 were imputed as nonresponders. Results Of 244 pts, 153/244 (62.7%), 112/244 (45.9%) and 89/242 (36.8%) achieved endoscopic response, endoscopic remission, and ulcer-free endoscopy, respectively, at LTE week 0. Significantly (all nominal P≤0.05) more pts who achieved endoscopic response, endoscopic remission or had an ulcer-free endoscopy at LTE Week 0 achieved CDAI response, CDAI remission, SF/AP clinical remission, IBDQ response, IBDQ remission and FACIT-F response at LTE week 96 (Table). CD-related hospitalisations or surgeries at LTE week 96, were significantly (nominal P≤0.05) lower in pts with endoscopic remission and ulcer-free endoscopy at LTE week 0, and numerically lower in pts with endoscopic response. Conclusion A significantly higher proportion of pts who achieved endoscopic outcomes at 52 weeks and received up to 3 years of UPA maintenance treatment achieved long-term improvements in clinical and PROs and reduced CD-related hospitalisations or surgeries. Conflict of interest: Loftus, Jr, Edward: Edward V. Loftus, Jr. has received consulting fees from AbbVie, Abivax, Astellas, Avalo Therapeutics, Biocon, BMS, Celltrion Healthcare, Eli Lilly, Fresenius Kabi, Genentech, Gilead, Iota Biosciences, Iterative Health, Janssen, Merck, Morphic Therapeutics, Ono Pharma, Spyre Therapeutics, Takeda, and TR1X Bio has received research support from AbbVie, Genentech, Gilead, Janssen, Merck, and Takeda and holds stock in Exact Sciences and Moderna. Louis, Edouard: Education and Reserach Grants for my department: Abbvie, Takeda, Johnson and Johnson, Pfizer, Fresenius-Kabi, Celltrion, EG pharma, Sandoz, Falk Personal Fees for conferences, advisory boards and consultancy: Abbvie, Takeda, Ferring, Pfizer, Johnson and Johnson, Lilly, Galapagos, Celltrion, Arena, BMS, Falk, Biokuris, Fresenius-Kabi, Thabor Bossuyt, Peter: Grant support for research from AbbVie, EG Consulting fee from AbbVie, Bristol Meyers Squibb, CIRC, Galapagos, Janssen, Jeito capital, Lilly, Pentax, Pfizer, PSI-CRO, Roche, Takeda, Tetrameros Speakers fee from AbbVie, AMC ICP, Amgen, Bristol Myers Squibb, Celltrion, Dr Falk Benelux, EG, Galapagos, Globalport, Lilly, Medtalks, Materia Prima, Pentax, Springer Media Joshi, Namita: Namita Joshi is a full-time employees/contractor of AbbVie and may own AbbVie stock or options. Shukla, Nidhi: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Dubcenco, Elena: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Aponte, Fernando: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Perkovic, Ashley: Full-time employee/contractor of AbbVie and may own AbbVie stock or options. Panés, Julián: Personal Fees: J. Panés received consultancy fees/honorarium from AbbVie, Alimentiv, Boehringer Ingelheim, Ferring, Galapagos, Genentech/Roche, GlaxoSmithKline, Janssen, Mirum, Nimbus, Pfizer, Progenity, Prometheus, Protagonist, Revolo, Sanofi, Sorriso, Spyre Therapeutics, Surrozen, Takeda, and Wasserman, and has served on data safety monitoring boards for Alimentiv, Mirum, Roche, Sorriso, Sanofi, and Surrozen

Abstract Background A subset of risankizumab (RZB)-treated patients experience suboptimal or secondary loss of response to standard dosing. We explored factors associated with future RZB dose-optimization, and outcomes of optimization in a multicenter consortium of adults with Crohn’s Disease (CD). Methods Baseline characteristics at time of RZB initiation and subsequent clinical, endoscopic, and biochemical outcomes were collected in a multi-center cohort. Outcomes for dose-optimized RZB were reported as clinical response and remission (based on HBI or PGA when HBI unavailable), endoscopic remission (based on SEMA-CD or absence of ulcers when SEMA-CD not available), and biochemical response. Characteristics were compared between standard and dose-optimized groups using chi-square and two-sample t-tests. Additional models adjusting for age and sex assessed predictors of dose optimization. Results We identified 309 patients treated with standard dose and 58 for whom dose-optimized RZB was recommended. Of the 58, 29 were excluded from outcomes analysis due to lack of follow-up (n = 19) or insurance denial of dose optimization (n = 10). Demographic information is outlined in Table 1. Baseline characteristics associated with future dose optimization included number of prior advanced therapies (ATs) (OR, 1.29, p < 0.001), prior anti-TNF (OR,4.06; p = 0.022), and prior ustekinumab (UST) use (OR,1.82; p = 0.053) (Table 2). The 29 patients included in the outcome analysis received dose-optimized RZB for primary non-response (n = 2), partial response (n = 23), or secondary loss of response (n = 4) after a median of 321 days (IQR, 234-440) from index RZB start. Median follow-up after dose optimization was 217 days (IQR, 147-331). All patients were AT-exposed (Table 1). Baseline clinical symptoms were present in 27 patients (93.1%), with median HBI of 6.5 (IQR, 6.0-8.0). Active endoscopic disease was observed in 11/12 patients (91.7%) who had baseline endoscopy. Dosing was every 4 weeks in 19 (65.5%), every 6 weeks in 9 (31.0%), and combined IV re-induction plus every 4-weeks in 1 (3.4%) patient. Clinical response and remission was seen in 16 (55.2%) and 12 (41.4%) patients, respectively. A ≥ 50% CRP reduction was seen in 5/12 (41.7%) patients with baseline elevated CRP. Among 7 patients with baseline active endoscopic disease with available follow-up, 3 (42.9%) achieved endoscopic remission. No adverse events were reported. Conclusion In this multi-center retrospective cohort, prior AT-exposure (especially anti-TNF) was associated with need for RZB dose-optimization. Dose optimization successfully captured clinical response in a significant proportion of patients who experienced partial response or loss of response to RZB. Conflict of interest: Johnson, Amanda: Research grant: Abbvie, Spyre Therapeutics Ramesh, Prajith Raj: None Said, Hyder: No conflict of interest Huang, Katherine: No conflict of interest Devi, Jalpa: none Pekow, Joel R.: CVS Health - Consulting Abbvie, Eli Lilly, Pfizer, Johnson and Johnson - Stocks Alhobayb, Tamara: No conflict of interest Bassmeyer, Blake: No conflict of interest Mohamed, Mouhand: No conflict of interest Shivashankar, Raina: Abbvie and BMS - speaker bureau Janssen and Celltrion - grant for IBD fellowship funding Pfizer - consultant Rathi, Jaya: No conflict of interest Luu, Bryan: No conflict of interest Khan, Abdul: No conflict of interest Loftus, Jr, Edward: Grant: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, Genentech, Gilead, Janssen, Pfizer, Receptos, Robarts Clinical Trials, Takeda, Theravance, UCB. Personal Fees: AbbVie, Allergan, Amgen, Arena, Boehringer Ingelheim, Bristol-Myers Squibb, Calibr, Celgene, Celltrion, Eli Lilly, Genentech, Gilead, Iterative Scopes, Janssen, Ono Pharma, Pfizer, Sun Pharma, Takeda, UCB. Bishu, Shrinivas: None Patel, Anish: speaker: abbvie, J & J, Lilly, BMS, Pfizer, Phathom, Takeda consultant: abbvie Shukla, Richa: Speakers bureau - Abbvie and Lilly Yarur, Andres: Personal Fees: Consultant for Takeda, Pfizer, Roche, Merck, Abbvie, Eli Lilly. Bristol Myers Squibb, Celltrion, Johnson and Johnson. Ungaro, Ryan: Personal Fees: AbbVie, Bristol Myers Squibb, Genentech, Lilly, Pfizer, Janssen, Takeda Deepak, Parakkal: Parakkal Deepak has received research support under a sponsored research agreement unrelated to the data in the abstract from AbbVie, Johnson and Johnson, Sanofi, Merck, Teva, Direct Biologics, Tr1x, Boehringer Ingelheim, Bristol Myers Squibb, Pfizer, Prometheus Biosciences, Takeda Pharmaceuticals, Roche Genentech, Eli Lilly, AstraZeneca, Spyre and Agomab, has received consulting fees from Johnson and Johnson, Abbvie, Merck, Sobi, Celltrion, Fresenius Kabi, Asahi Kasei Pharma, Sandoz and CorEvitas, LLC and has served on the board of the Srategic Alliance for Intercultural Advocacy in GI.

Abstract Background Risankizumab (RZB), a high-affinity humanised IgG1 monoclonal antibody targeting interleukin-23 p19, has demonstrated sustained efficacy, with a consistent safety profile supporting long-term use for patients (pts) with ulcerative colitis (UC).1-3 This interim analysis reports efficacy and safety through open-label extension (OLE) week (wks) 96 (3 years [yrs] of total maintenance) from the COMMAND OLE. Methods The OLE enrolled RZB-treated pts who completed the 52-wk maintenance substudies and/or responded to 12/24-wk induction therapy.1 All pts received subcutaneous RZB 180 mg (RZB180) starting at OLE wk 0, except those who received prior OLE RZB rescue therapy (1 RZB 1200 mg intravenous dose then RZB 360 mg [RZB360] every 8 wk) and continued RZB360 for 96 wks. Efficacy endpoints (clinical remission [CR] per Adapted Mayo Score [AMS], CR per Partial AMS [PAMS], corticosteroid-free CR per PAMS, clinical response per AMS, clinical response per PAMS, endoscopic improvement, and endoscopic remission) were assessed at OLE wks 0 and 96 and reported as observed (AO) prior to OLE RZB rescue therapy and nonresponder imputation (NRI), among the overall population and by inadequate response to advanced therapy (AT-IR vs non-AT-IR; data cutoff: 25Aug2025). The safety analysis included pts who received at least 1 dose of OLE RZB, with data presented as events/100 pt-yrs. Results At OLE wk 0, approximately 90% pts (N = 1003) completed the study visit; some differences were observed in the clinical characteristics of RZB180 and RZB360-treated pts, including mean AMS (2.0, 3.4); a numerically higher proportion of RZB360-pts were AT-IR (63.1%, 76.8%), and had an endoscopic score of ≥ 3 (12.1%, 31.1%). A lower proportion of RZB360-treated pts achieved CR per AMS (54.8%, 25.2%) at OLE wk 0, while a higher proportion of RZB360-treated pts received OLE rescue therapy (RZB180, 22.1%; RZB360, 34.5%). Efficacy rates remained stable at OLE wks 0 and 96 for CR per AMS; similar results were observed within each subgroup, AT-IR and non-AT-IR (Table 1). Numerically lower efficacy rates were observed in the AT-IR vs non-AT-IR pts at wk 96; efficacy was sustained through OLE wk 96 for all endpoints (AO, NRI; Table 1). Similar rates were observed for any adverse event (AE), severe AE, and serious AE in RZB180 and RZB360-treated pts. No new safety risks were identified in either treatment group (Table 2). Conclusion In the ongoing COMMAND OLE, sustained clinical and endoscopic benefit was observed in pts receiving up to 3 yrs of long-term RZB maintenance therapy, with numerically lower efficacy rates observed for AT-IR vs non-AT-IR vs pts. The long-term safety of RZB remains consistent with a favorable benefit-risk profile, supporting its long-term use in UC. References: 1.Louis E et al. JAMA. 2024;332:881-97. 2.Atreya R et al. J Crohn’s Colitis. 2025;19(S1):i108-i110. [Abstract]. 3.Panaccione R et. al. J Crohn’s and Colitis. 2025, 19(1):jjaf005. Conflict of interest: Atreya, Raja: RA has served as a speaker, or consultant, or received research grants from AbbVie, Abivax, AlfaSigma, Arena Pharmaceuticals, Astra-Zeneca, Biogen, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Celltrion Healthcare, Dr Falk Pharma, Galapagos, Gilead, GlaxoSmithKline, InDex Pharmaceuticals, Johnson & Johnson, Lilly, Materia Prima, Merck Sharpe & Dohme, Pfizer, Roche Pharma, Takeda Pharma, Viatris. Louis, Edouard: Education and Reserach Grants for my department: Abbvie, Takeda, Johnson and Johnson, Pfizer, Fresenius-Kabi, Celltrion, EG pharma, Sandoz, Falk Personal Fees for conferences, advisory boards and consultancy: Abbvie, Takeda, Ferring, Pfizer, Johnson and Johnson, Lilly, Galapagos, Celltrion, Arena, BMS, Falk, Biokuris, Fresenius-Kabi, Thabor Loftus, Jr, Edward: Grant: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, Genentech, Gilead, Janssen, Pfizer, Receptos, Robarts Clinical Trials, Takeda, Theravance, UCB. Personal Fees: AbbVie, Allergan, Amgen, Arena, Boehringer Ingelheim, Bristol-Myers Squibb, Calibr, Celgene, Celltrion, Eli Lilly, Genentech, Gilead, Iterative Scopes, Janssen, Ono Pharma, Pfizer, Sun Pharma, Takeda, UCB. Rubin, David T.: Grant support: Takeda Pharmaceuticals Consultant: Abbvie, Abivax SA, Altrubio, Athos Therapeutics, Inc, Bristol-Myers Squibb, Celltrion, Connect BioPharma, Eli Lilly & Co., Genentech (Roche) Inc., Iterative Health, Janssen Pharmaceuticals, Johnson & Johnson, Merck & Co., Mirador, Odyssey Therapeutics, Pfizer, Sanofi, Spyre, Takeda Pharmaceuticals, Vedanta Biosciences, and Ventyx. Dubinsky, Marla C: Personal Fees: Consultant or Advisory Board: Abbvie, Abivax, Astra Zeneca, BMS, Celltrion, Gilead, Genentech, Janssen, Johnson and Johnson, Lilly, Merck, Pfizer, Prometheus Biosciences, Sanofi, Spyre, Target RWE, Takeda Other: Shareholder, Co-founder, Board of Directors of Trellus Health Co-Founder Mi Test Health Hisamatsu, Tadakazu: Grant support: Mitsubishi Tanabe Pharma Corporation, EA pharma Co. Ltd., AbbVie, JIMRO Co. Ltd., Zeria Pharmaceutical Co. Ltd., Kyorin Pharmaceutical Co. Ltd., Takeda, Pfizer., Mochida, Boston Scientific Corporation, Kissei Pharmaceutical Co. Ltd. Consulting: Mitsubishi Tanabe Pharma Corporation, EA pharma Co. Ltd., AbbVie GK, Janssen Pharmaceutical K.K., Pfizer, Eli Lilly, Gilead Sciences, Bristol Myers Squibb, Abivax, MSD, Chugai. Lecture fee: Mitsubishi Tanabe Pharma Corporation, AbbVie GK, EA pharma Co. Ltd., Kyorin Pharmaceutical Co. Ltd., JIMRO Co., Janssen Pharmaceutical K.K., Mochida Pharmaceutical Co., Ltd., Takeda, Pfizer, Kissei Mambetsariev, Nurbek: Employee of AbbVie and may own stock and/or stock options. Kalabic, Jasmina: Employee of AbbVie and may own stock and/or stock options. Cheng, Peiyao: Employee of AbbVie and may own stock and/or stock options. Chen, Su: Employee of AbbVie and may own stock and/or stock options. O’Brien, Dan: Employee of AbbVie and may own stock and/or options. Morisset, Pierre: Employee of AbbVie and may own stock and/or stock options. Duan, W. Rachel: Employee of AbbVie and may own stock and/or stock options. Panaccione, Remo: Grant: Abbvie, Janssen, Pfizer, Takeda. Other: Consultant for: Abbott, AbbVie, Abbivax, Alimentiv (formerly Robarts), Amgen, AnaptysBio, Arena Pharmaceuticals, AstraZeneca, Biogen, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Celltrion, Cosmos Pharmaceuticals, Eisai, Elan, Eli Lilly, Ferring, Galapagos, Fresenius Kabi, Genentech, Gilead Sciences, Glaxo-Smith Kline, JAMP Bio, Janssen, Merck, Mylan, Novartis, Oppilan Pharma, Organon, Pandion Pharma, Pendopharm, Pfizer, Progenity, Prometheus Biosciences, Protagonist Therapeutics, Roche, Sandoz, Satisfai Health, Shire, Sublimity Therapeutics, Spyre Therapeutics, Takeda Pharmaceuticals, Theravance Biopharma, Trellus, Union Biopharma, Viatris, Ventyx, UCB Speaker’s Fees for: AbbVie, Amgen, Arena Pharmaceuticals, Bristol-Myers Squibb, Celgene, Eli Lilly, Ferring, Fresenius Kabi, Gilead Sciences, Janssen, Merck, Organon, Pfizer, Roche, Sandoz, Shire, Takeda Pharmaceuticals Advisory Boards for: AbbVie, Alimentiv (formerly Robarts), Amgen, Arena Pharmaceuticals, AstraZeneca, Biogen, Boehringer Ingelheim, Bristol-Myers Squibb, Celgene, Eli Lilly, Ferring, Fresenius Kabi, Genentech, Gilead Sciences, Glaxo-Smith Kline, JAMP Bio, Janssen, Merck, Mylan, Novartis, Oppilan Pharma, Organon, Pandion Pharma, Pfizer, Progenity, Protagonist Therapeutics, Roche, SandozShire, Sublimity Therapeutics, Takeda Pharmaceuticals, Ventyx.

Abstract Background Icotrokinra is the first targeted oral peptide that selectively blocks the IL-23 receptor (IL-23R) and precisely inhibits the IL-23 pathway. In ANTHEM-UC—a Phase 2b, randomised, double-blind, placebo (PBO)-controlled, dose-ranging study in adults with moderately to severely active ulcerative colitis (UC)—all doses of icotrokinra achieved the primary endpoint of clinical response and delivered clinically meaningful improvements across key secondary endpoints at Week (W)12,1 which were maintained or improved at W28.2 Here we report the impact of icotrokinra on systemic and tissue biomarkers of inflammatory burden in UC. Methods Participants were randomised (1:1:1:1) to receive once-daily icotrokinra 100 mg, 200 mg, 400 mg, or PBO. Clinical inflammatory biomarkers, C-reactive protein (CRP) and faecal calprotectin (FCP), along with serum IL-23 pathway biomarkers (IL-22, IL-17A, and IL-17F) were used to determine the impact of icotrokinra on systemic inflammation. Gene expression changes in colonic biopsies were used to confirm tissue IL-23 pathway engagement and dampening of tissue inflammation with icotrokinra. Results At the W12 primary timepoint, all doses of icotrokinra attenuated levels of serum CRP and FCP (Figure 1). All doses of icotrokinra, but not PBO, markedly reduced serum levels of IL-22, IL-17A, and IL-17F at W12 relative to baseline. Greater reductions in these serum biomarkers of IL-23 pathway activation were observed with the 200 mg and 400 mg doses relative to the 100 mg dose (Figure 1, nominal p < 0.05). All doses of icotrokinra, but not PBO, markedly reduced expression of gene sets associated with the IL-23–driven inflammation in tissue at W12 relative to baseline (Figure 2, nominal p < 0.0001). With icotrokinra treatment, the tissue transcriptome more closely resembled that of healthy individuals, with decreased expression of gene sets associated with UC-relevant inflammatory cell types and increased expression of genes characteristic of healthy epithelial cells. Importantly, dampening of systemic and tissue inflammation with icotrokinra was sustained at W28 (Figures 1 & 2). Conclusion We show for the first time that blocking the IL-23R can inhibit IL-23-mediated inflammatory signaling in UC patients. Icotrokinra treatment induced a sustained (W28) reduction in systemic and tissue biomarkers of inflammatory burden in UC. Furthermore, icotrokinra induced transcriptional changes that are consistent with dampening of IL-23–driven inflammation and normalization of the tissue transcriptome. While all once-daily doses of icotrokinra attenuated systemic and tissue inflammation, greater reduction of systemic inflammatory burden was observed with the 200 mg and 400 mg doses of icotrokinra. References: 1. Abreu MT, et al. United European Gastroenterol J. 2025 10;13(suppl 8):172-3. 2. Jairath V, et al. Am J Gastroenterol. 2025 120;10(suppl 2):S312. Conflict of interest: Louis, Edouard: Education and Research Grants for my department: Abbvie, Takeda, Janssen, Pfizer, Fresenius-Kabi, Celltrion, EG pharma, Sandoz, Falk Personal Fees for conferences, advisory boards and consultancy: Abbvie, Takeda, Ferring, Pfizer, Janssen, Lilly, Galapagos, Celltrion, Arena, BMS, Falk, Biokuris, Fresenius-Kabi, Thabor Jairath, Vipul: Consulting fees from AbbVie, Alimentiv, Amgen, Anaptys Bio, Asahi Kasei, Asieris, Astra Zeneca, Attovia, Blackbird Labs, Bristol Myers Squibb, Boehringer Ingleheim, Biomebank, Caldera, Calluna, Catalytic Health, Celltrion, Ensho, Enthera, Exeliome Biosciences, Ferring, Fresenius Kabi, Gilead, Granite Bio, GSK, Johnson & Johnson, Lilly, Merck, Mountainfield, MRM Health, Nxera, Organon, OSE Immunotherapeutics, Pendopharm, Pioneering Medicine, Pfizer, Prometheus, Roche/Genentech, Sanofi, SCOPE, Shattuck Labs, Sorriso, Spyre, Synedgen, Takeda, Teva, Tillotts, Union Therapeutics, Ventus, Ventyx, Vividion, Xencor, Zealand Pharma. Siegmund, Britta: Consultant for AbbVie, Abivax, Boehringer Ingelheim, Bristol Myers Squibb, Dr. Falk Pharma, Eli Lilly, Endpoint Health, Galapagos, Johnson & Johnson, Materia Prima, MSD, Pfizer, Takeda, Wedbush Securities speaker for AbbVie, AlfaSigma, Bristol Myers Squibb, CED Service GmbH, Dr. Falk Pharma, Eli Lilly, Ferring, Galapagos, Johnson & Johnson, MD Education, MSD, Pfizer, Tr1xBio grant from Pfizer. Kannan, Arun K: Employee and shareholder of Johnson & Johnson Zeeman, Martha: Employee and shareholder of Johnson & Johnson Hart, Amy: Employee and shareholder of Johnson & Johnson Strawn, David: Employee and shareholder of Johnson & Johnson Venkat, Swati: Employee and shareholder of Johnson & Johnson Tomsho, Lynn: Employee and shareholder of Johnson & Johnson Mcrae, Bradford: Employee and shareholder of Johnson & Johnson Ruane, Darren: Employee and shareholder of Johnson & Johnson Surace, Lindsey: Employee and shareholder of Johnson & Johnson Erondu, Ngozi: Employee and shareholder of Johnson & Johnson Zhan, Joyce: Employee and shareholder of Johnson & Johnson Chen, Minhu: I have received speaker honoraria from Takeda China, Xian Janssen, and AbbVie China, as well as research funding from Takeda (China). Chachu, Karen: Advisory board for Johnson & Johnson consultant for OptumRx Matsuoka, Katsuyoshi: Grant: Abbvie Inc., Mochida Pharmaceutical Co., Ltd., ZERIA Pharmaceutical Co., Ltd., Nippon Kayaku Co., Ltd., JIMRO Co., Ltd. Personal Fees: Mitsubishi Tanabe Pharma, Janssen Pharmaceutical K.K., Abbvie Inc., EA Pharma Co., Ltd., Takeda Pharmaceutical Co., Ltd., Mochida Pharmaceutical Co., Ltd., ZERIA Pharmaceutical Co., Ltd., Nippon Kayaku Co., Ltd., Pfizer Inc., Kyorin Pharmaceutical Co., Ltd., Eli Lilly Japan K.K., Kissei Pharmaceutical Co., Ltd., Gilead Sciences, Celltrion Healthcare, Bristol-Myers Squibb Limdi, Jimmy: Speaker/consultancy fees from AbbVie, Abivax, Arena, BioHit, Bristol Myers Squibb, Celltrion, Eli Lilly, Ferring, Galapagos, Johnson & Johnson, MSD, Pfizer, Takeda research support from Galapagos, Takeda Rydzewska, Grazyna: Speaker and consultant fees from AbbVie, AlfaSigma, AstraZeneca, Bayer, Biocodex, Bristol Myers Squibb, Ferring, Johnson & Johnson, Lilly, PRO.MED.Pl, Recordati, Sanprobi, SOBI, Takeda travel/accommodation meeting expenses from AbbVie, Ferring, Takeda Abreu, Maria Teresa: Grant/Research Support: Janssen, Prometheus Bioscience, Takeda Consultant: Janssen, Prometheus Bioscience, Takeda Gilead, Eli Lilly, AbbVie Inc., Bristol Myers, Imedex, Loftus Jr, Edward V: Consultant/advisory board member for AbbVie, Amgen, Bristol Myers Squibb, Eli Lilly and Company, Genentech, Gilead Sciences, Johnson & Johnson, Pfizer, Takeda, UCB.