Celltrion presents post hoc analysis of LIBERTY studies of ZYMFENTRA® at the American College of Gastroenterology 2024 Annual Scientific Meeting

• Pivotal LIBERTY studies (LIBERTY-CD and LIBERTY-UC) previously demonstrated superior efficacy of subcutaneous (SC) infliximab over placebo for maintenance therapy in patients with Crohn's disease (CD) and ulcerative colitis (UC)^{[1], [2]}
• ZYMFENTRA^® is the first and only FDA-approved subcutaneous infliximab
• Late-breaking post hoc analysis of the LIBERTY studies suggests no meaningful differences in efficacy and safety outcomes at week 54 and 102 weeks between monotherapy and combination therapy of SC infliximab with immunosuppressants^[3]

JERSEY CITY, N.J., Oct. 30, 2024 /PRNewswire/ -- Celltrion USA today announced a late-breaking post hoc analysis of the pivotal LIBERTY studies (LIBERTY-CD and LIBERTY-UC) of ZYMFENTRA^® (infliximab-dyyb), during the American College of Gastroenterology (ACG) 2024 Annual Scientific Meeting. The data demonstrate that clinical outcomes for patients treated with ZYMFENTRA monotherapy were comparable to those for patients on combination therapy with immunosuppressants (IS), suggesting that monotherapy could be a potential treatment option for patients with inflammatory bowel disease (IBD).^[3] One-year data for the LIBERTY studies were originally published in the journal Gastroenterology.^[4]

ZYMFENTRA, the first and only FDA-approved subcutaneous infliximab, had previously shown superior efficacy over placebo for maintenance therapy in patients with Crohn's disease (CD) and ulcerative colitis (UC) in the randomized LIBERTY-CD and LIBERTY-UC studies.^{[1], [2]} The new post hoc analysis explored the impact of baseline IS use by comparing outcomes between monotherapy and combination therapy.^[3]

The analysis included 429 patients from the CD and UC cohorts across the LIBERTY studies (192 patients with CD [monotherapy, n=126; combination therapy, n=66] and 237 patients with UC [monotherapy, n=180; combination therapy, n=57]). In both studies, there were no meaningful differences in efficacy outcomes between monotherapy and combination therapy at Week 54 or Week 102, despite combination therapy generally showing higher mean trough levels of infliximab after Week 10. Additionally, the overall safety profile was comparable between monotherapy and combination therapy throughout the pooled maintenance and extension phase.^[3]

"The new data strengthens the case for ZYMFENTRA monotherapy as a potential treatment option for patients with Crohn's disease and ulcerative colitis," said Hetal Patel, PharmD MBA, Head of Medical Affairs at Celltrion USA. "At Celltrion, we are committed to offering therapies that help patients and healthcare providers make informed, personalized treatment decisions. These findings suggest that ZYMFENTRA could offer flexibility in treatment approaches, providing confidence in monotherapy as an alternative to combination therapy, while maintaining effective disease control."

For more information, please visit: www.celltrionusa.com.