Icahn School of Medicine at Mount Sinai New York, NY
Bruce E. Sands, MD, MS, FACG1, David T. Rubin, MD, FACG2, Gary Lichtenstein, MD3, Nicole Shipitofsky, PharmD4, Kuan-Hsiang Huang, MD, PhD4, Matthew Germinaro, MD5, Rebbecca Wilson, DPH4, Hongyan Zhang, PhD4, Aaron DuVall, MD6, Qian Cao, PhD7, Jessica R. Allegretti, MD, MPH8, Brian G. Feagan, MD9, Laurent Peyrin-Biroulet, MD, PhD10, Tadakazu Hisamatsu, MD, PhD11, Julian Panés, MD12, Axel Dignass, MD, PhD13, Brian Bressler, MD, MS14 1Icahn School of Medicine at Mount Sinai, New York, NY; 2University of Chicago Medicine Inflammatory Bowel Disease Center, Chicago, IL; 3University of Pennsylvania, Philadelphia, PA; 4Janssen Research & Development, LLC, Spring House, PA; 5Janssen Research & Development, LLC., Spring House, PA; 6Tyler Research Institute, LLC, Tyler, TX; 7Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; 8Brigham and Women’s Hospital Crohn’s and Colitis Center, Boston, MA; 9Alimentiv, Inc.; Western University, London, ON, Canada; 10University of Lorraine, Nancy, Lorraine, France; 11Kyorin University School of Medicine, Tokyo, Tokyo, Japan; 12Hospital Clínic de Barcelona, IDIBAPS, CIBERehd, Barcelona, Catalonia, Spain; 13Agaplesion Markus Hospital / Goethe University, Frankfurt, Hessen, Germany; 14University of British Columbia, Vancouver, BC, Canada
Introduction: Guselkumab (GUS), an IL-23p19 antagonist, had greater efficacy than placebo (PBO) in achieving clinical response and clinical remission at Week (Wk) 12 in the randomized, controlled Phase 2b QUASAR Induction Study 1 (NCT04033445) in patients with moderately to severely active ulcerative colitis (UC).1 Patients who were not in clinical response at Wk 12 received GUS treatment through Wk 24. Here, we report GUS cumulative efficacy and safety results for Induction Study 1.
Methods: Eligible patients had moderately to severely active UC (modified Mayo score of 5 to 9 with a Mayo endoscopy subscore ≥2) at baseline. Patients were randomized 1:1:1 to IV GUS 200mg, 400mg, or PBO at Wks 0, 4, and 8. Patients who were not in clinical response to IV induction at Wk 12 received GUS treatment (PBO IV→GUS 200mg IV; GUS 200mg IV→GUS 200mg SC; GUS 400mg IV→GUS 200mg SC) at Wks 12, 16, and 20 and were evaluated at Wk 24 (Figure 1). Matching IV or SC PBO was administered to maintain the blind.
Results: Three hundred thirteen patients were randomized and treated at baseline. Demographic and disease characteristics at baseline were similar among the treatment groups, and approximately 50% had a prior inadequate response or intolerance to advanced UC therapy.
At Wk 12, clinical response was achieved by 61.4% (62/101) and 60.7% (65/107) of patients randomized to GUS 200mg and GUS 400mg IV vs 27.6 % (29/105) of patients randomized to PBO IV (both p< 0.001). Of the patients in the GUS groups who were not in clinical response at Wk 12, 54.3% (19/35) in the GUS 200mg IV→200mg SC group and 50.0% (19/38) in the GUS 400mg IV→200mg SC group achieved clinical response at Wk 24. Clinical response at Wk 12 or 24 was achieved by 80.2% of patients who were randomized to GUS 200mg IV and 78.5% of patients who were randomized to GUS 400mg IV. For patients who received PBO IV→GUS 200mg IV, clinical response at Wk 24 (65.2%) was similar to Wk 12 clinical response following GUS 200mg IV induction (61.4%). The most frequent adverse events among all GUS-treated pts (n=274) were anemia (7.7%), headache (5.1%), worsening UC (4.4%), COVID-19 (3.6%), arthralgia (2.9%) and abdominal pain (2.6%) which are consistent with Wk 12 results.
Discussion: Overall, approximately 80% of patients randomized to receive GUS achieved clinical response at Wk 12 or 24. Continued treatment with SC GUS allowed 50-54.3% of IV GUS Wk 12 clinical nonresponders to achieve clinical response at Wk 24. No new safety concerns for GUS were identified.
Figure: Figure 1. QUASAR Induction Study 1: Study Design
Julian Panés: Abbott – payment for the development of educational presentations, Speakers Bureau. AbbVie – Consultant, Grant/Research Support, support for travel to meetings, during the conduct of the study; payment for development of educational presentations. Arena – Consultant. Athos – Consultant. Boehringer Ingelheim – Consultant. Celgene – Consultant. Celltrion – Consultant. Ferring – Consultant. Galapagos – Consultant. Genentech-Roche – Consultant. GSK – Consultant. Janssen – Consultant, Payment for development of educational presentations, Speakers Bureau. Mirum – Consultant. Morphic – Consultant. MSD – Consultant. Nestlé – Consultant. Origo – Consultant. Pandion – Consultant. Pfizer – Consultant, Grant/Research Support, Payment for development of educational presentations, Speakers Bureau. Progenity – Consultant. Protagonist – Consultant. Revolo – Consultant. Robarts – Consultant. Roche – Payment for development of educational presentations. Takeda – Consultant, Support for travel to meetings during the conduct of the study, Speakers Bureau. Theravance – Consultant, Speakers Bureau. Wassermann – Consultant.
Brian Bressler: Abbvie – Advisor or Review Panel Member, Grant/Research Support, Speakers Bureau. Allergan – Advisor or Review Panel Member. Alvine – Grant/Research Support. Amgen – Advisor or Review Panel Member, Grant/Research Support. Boehringer Ingelheim – Grant/Research Support. Bristol Myers Squibb – Advisor or Review Panel Member, Grant/Research Support. Celgene – Advisor or Review Panel Member, Grant/Research Support. Ferring – Advisor or Review Panel Member, Speakers Bureau. Genentech – Advisor or Review Panel Member, Grant/Research Support. GSK – Grant/Research Support. Janssen – Advisor or Review Panel Member, Grant/Research Support, Speakers Bureau. Merck – Advisor or Review Panel Member, Grant/Research Support, Speakers Bureau. Microbiome Insights – Advisor or Review Panel Member. Novartis – Advisor or Review Panel Member, Speakers Bureau. Pendopharm – Advisor or Review Panel Member. Pfizer – Advisor or Review Panel Member, Speakers Bureau. Protagonist – Advisor or Review Panel Member. Qu Biologic – Grant/Research Support, Stock Options. Robarts Clinical Trials – Advisor or Review Panel Member. Takeda – Advisor or Review Panel Member, Speakers Bureau.
Bruce E. Sands, MD, MS, FACG1, David T. Rubin, MD, FACG2, Gary Lichtenstein, MD3, Nicole Shipitofsky, PharmD4, Kuan-Hsiang Huang, MD, PhD4, Matthew Germinaro, MD5, Rebbecca Wilson, DPH4, Hongyan Zhang, PhD4, Aaron DuVall, MD6, Qian Cao, PhD7, Jessica R. Allegretti, MD, MPH8, Brian G. Feagan, MD9, Laurent Peyrin-Biroulet, MD, PhD10, Tadakazu Hisamatsu, MD, PhD11, Julian Panés, MD12, Axel Dignass, MD, PhD13, Brian Bressler, MD, MS14. A0395 - QUASAR Induction Study 1 Cumulative Response to Guselkumab in Patients With Moderately to Severely Active Ulcerative Colitis, ACG 2022 Annual Scientific Meeting Abstracts. Charlotte, NC: American College of Gastroenterology.