• Data from the Phase 3 BE VIVID and BE READY studies show that bimekizumab-treated patients with psoriasis achieved significant skin clearance at week 16, rapid response after one dose, and durability of response up to a year
• Results support the importance of selectively inhibiting IL-17F, in addition to IL-17A, with bimekizumab

Brussels, Belgium – 12 June 2020 – UCB, a global biopharmaceutical company, today announced the first presentations of data from the Phase 3 clinical development program of bimekizumab, its investigational IL-17A and IL-17F inhibitor, as part of a virtual session for the American Academy of Dermatology (AAD) 2020 Annual Meeting. Patients treated with bimekizumab achieved superior skin clearance in both the BE VIVID and BE READY Phase 3 studies, compared to those who received placebo or Stelara^® (ustekinumab).^1,2 The majority of bimekizumab-treated patients in both studies achieved total skin clearance at week 16 and maintained their response for a year, as measured by the Psoriasis Area and Severity Index (PASI) 100 and Investigator Global Assessment (IGA) response of 0.^1,2

Both studies evaluated the efficacy and safety of bimekizumab in adults with moderate-to-severe plaque psoriasis and met their co-primary superiority endpoints of at least a 90 percent improvement in the Psoriasis Area and Severity Index (PASI 90) and IGA response of clear or almost clear skin (IGA 0/1) at week 16, versus placebo.^1,2 The safety and efficacy of bimekizumab have not been established and it is not approved by any regulatory authority worldwide.

“We are delighted to share detailed results from the two bimekizumab Phase 3 studies, BE VIVID and BE READY. The majority of patients in these studies achieved rapid and lasting skin clearance. These positive results support the selective inhibition of IL-17F in addition to IL-17A, which suppresses inflammation to a greater extent than IL-17A inhibition alone. UCB is proud to lead the way in connecting science to unmet patient needs and developing bimekizumab. It is our ambition to provide a transformative experience for psoriasis patients,” said Emmanuel Caeymaex, Executive Vice President Immunology Solutions and Head of US, UCB.

BE VIVID RESULTS

In BE VIVID, the pivotal Phase 3 study with active comparator ustekinumab, patients treated with bimekizumab 320 mg every four weeks (Q4W) achieved significantly superior skin clearance than those receiving placebo or ustekinumab at week 16, as measured by PASI 90 and IGA 0/1.¹ At the same time point, 58.6 percent of bimekizumab-treated patients achieved PASI 100 compared to 20.9 percent of ustekinumab-treated patients.¹ PASI 90 rates (all comparisons p<0.001) were – bimekizumab: 85.0 percent; ustekinumab: 49.7 percent; placebo: 4.8 percent; IGA 0/1 rates were – bimekizumab: 84.1 percent; ustekinumab: 53.4 percent; placebo:
4.8 percent.¹  Among patients who received one dose of bimekizumab, 76.9 percent achieved PASI 75 by week 4, versus 15.3 percent of ustekinumab-treated patients and 2.4 percent of patients who received placebo.¹

BE VIVID results at week 52 show that bimekizumab sustained skin clearance, demonstrating superiority to ustekinumab.¹ PASI 100 was achieved by 64.2 percent of patients who received bimekizumab compared with 38 percent of those who received ustekinumab (nominal p<0.001).¹ A significantly greater proportion of bimekizumab-treated patients also achieved IGA 0/1 and PASI 90 at week 52 compared with ustekinumab- treated patients (77.9 percent versus 60.7 percent, and 81.6 percent versus 55.8 percent, respectively; p<0.001).¹ In the bimekizumab treatment arm, 38.9 percent of patients had received prior biologic therapy with an anti-TNF, anti-IL-17, or anti-IL-23 versus 38.7 percent in the ustekinumab treatment arm.¹

The most frequently reported adverse events with bimekizumab through week 52 in BE VIVID were nasopharyngitis (21.8 percent), oral candidiasis (15.2 percent), and upper respiratory tract infections (9.1 percent).¹ The majority of adverse events were mild to moderate in intensity.¹ The vast majority of patients (94.7 percent) did not discontinue treatment.¹ The incidence of serious treatment-emergent adverse events (TEAEs) was 6.1 percent with bimekizumab versus 7.4 percent with ustekinumab at week 52.¹
 
“The BE VIVID pivotal study results presented at AAD showcase bimekizumab’s impressive speed and durability of response. The complete skin clearance results at week 16, as measured by PASI 100, further strengthen our belief in bimekizumab’s potential to raise the bar for achieving long-lasting clear skin for people living with psoriasis,” said Prof. Kristian Reich, M.D., Ph.D., Translational Research in Inflammatory Skin Diseases, Institute for Health Services Research in Dermatology and Nursing, University Medical Center Hamburg-Eppendorf and Skinflammation^® Center, Hamburg, Germany, and BE VIVID Study Investigator.

BE READY RESULTS

In BE READY, the pivotal Phase 3 randomized withdrawal study, bimekizumab was superior to placebo in achieving PASI 90 and IGA 0/1 at week 16; over 90 percent of participants receiving bimekizumab achieved PASI 90 or IGA 0/1, while 68.2 percent achieved complete skin clearance (all p<0.001): PASI 90 (bimekizumab: 90.8 percent; placebo: 1.2 percent); IGA 0/1 (bimekizumab: 92.6 percent; placebo: 1.2 percent); PASI 100 (bimekizumab: 68.2 percent; placebo: 1.2 percent).²

In the second phase of the study, patients who had achieved at least a PASI 90 response were re-randomized to receive continuous bimekizumab at two different dosing regimens (320 mg every four weeks or 320 mg every eight weeks) or to be withdrawn from treatment (placebo Q4W).² Evaluating the effects of continuous therapy with bimekizumab at two different dosing regimens (Q4W and Q8W) versus randomized withdrawal found that maintenance of response was similar in the two bimekizumab treatment arms, with 86.8 percent of patients who received continuous bimekizumab 320 mg Q4W maintaining PASI 90 at week 56, compared to 91 percent who were switched to bimekizumab 320 mg Q8W and 16.2 percent of patients who were withdrawn.²

In BE READY, the most frequently reported adverse events with bimekizumab between week 16 and week 56 were nasopharyngitis (10.4 percent for the Q4W group; 23 percent for the Q8W group), oral candidiasis (11.3 percent Q4W; 9.0 percent Q8W), and upper respiratory tract infections (11.3 percent Q4W; 8.0 percent Q8W).² The majority of adverse events were mild to moderate in intensity.² The vast majority of patients (100 percent Q4W; 98 percent Q8W) did not discontinue treatment.² The incidence of serious TEAEs with bimekizumab was 4.7 percent for the Q4W group and 3.0 percent for the Q8W group versus 3.8 percent with placebo at week 56.²

“As a serious chronic condition that requires long-term management, psoriasis can pose complex treatment challenges. Today’s results demonstrate that bimekizumab may offer rapid and consistent skin clearance results over the course of 12 months, which represents a profound and meaningful evolution for many people living with psoriasis,” said Dr. Kenneth Gordon, Professor and Thomas R Russell Family Chair of Dermatology, Medical College of Wisconsin, Milwaukee, WI.

Phase 2b data from the BE ABLE 2 psoriasis study will also be presented virtually for AAD 2020. These findings demonstrate bimekizumab’s durability of response from week 12 to week 60, further supporting the results of the bimekizumab Phase 3 psoriasis clinical program.³

UCB has a robust clinical program for bimekizumab across multiple disease states. Top-line positive results from the comprehensive Phase 3 clinical program of bimekizumab in psoriasis were announced in Q4 2019. Full results from the placebo and adalimumab comparator BE SURE study will be presented at a future scientific congress. Phase 3 trials of bimekizumab in psoriatic arthritis, axial spondyloarthritis and hidradenitis suppurativa are also underway.

Stelara^® is a registered trademark of Johnson & Johnson.

The two late-breaking presentations cited in this release are:

Efficacy and safety of bimekizumab in patients with moderate-to-severe plaque psoriasis: results from BE VIVID, a 52-week Phase 3, randomized, double-blinded, ustekinumab- and placebo-controlled study, Kristian Reich, Kim A. Papp, Andrew Blauvelt, Richard Langley, April Armstrong, Richard B. Warren, Kenneth Gordon, Joseph F. Merola, Cynthia Madden, Maggie Wang, Veerle Vanvoorden, Mark Lebwohl
 
Efficacy and safety of bimekizumab in patients with moderate-to-severe plaque psoriasis: results from BE READY, a 56-week Phase 3, randomized, double-blinded, placebo-controlled study with randomized withdrawal, Kenneth Gordon, Peter Foley, James Krueger, Andreas Pinter, Kristian Reich, Ronald Vender, Veerle Vanvoorden, Cynthia Madden, Luke Peterson, Andrew Blauvelt


About BE VIVID
BE VIVID is a randomized, 52-week, double-blind, placebo- and active-controlled study designed to assess the efficacy and safety of bimekizumab in patients with moderate-to-severe chronic plaque psoriasis.⁴ BE VIVID enrolled 570 participants with chronic plaque psoriasis for at least six months prior to screening and with an affected body surface area of at least 10 percent and PASI of at least 12 and IGA score >=3 on a 5-point scale.⁴

The co-primary endpoints of the study were PASI 90 response (defined as a patient who achieves 90 percent improvement from baseline in the PASI score) at week 16, and IGA 0 or 1 response (defined as clear or almost clear with at least a 2-category improvement relative to baseline) at week 16.4 For additional details on the study, visit BE VIVID on clinicaltrials.gov.⁴

About BE READY
BE READY is a Phase 3, randomized, 56-week, double-blind, placebo-controlled study, with an initial treatment period followed by a randomized-withdrawal period, designed to assess the efficacy and safety of bimekizumab in adult patients with moderate-to-severe chronic plaque psoriasis.⁵ BE READY enrolled 435 participants with chronic plaque psoriasis for at least six months prior to screening and with an affected body surface area of at least 10 percent and PASI of at least 12 and IGA score >=3 on a 5-point scale.⁵

The co-primary endpoints of the study were PASI 90 response (defined as a patient who achieves at least a 90 percent improvement in PASI) and IGA response (defined as clear or almost clear with at least a two-category improvement relative to baseline) at week 16.5 For additional details on the study, visit BE READY on clinicaltrials.gov.⁵

Randomized withdrawal protocols are recommended by regulatory authorities as an enrichment strategy for clinical trials.⁶ In this type of study, participants receive a test treatment for a specified time, and then are randomly assigned to continued treatment with the test drug or to placebo (i.e. withdrawal of active therapy).⁶ Any difference between the two groups can demonstrate the effect of the active treatment.⁶ The advantage of this design is that it is more ethical, as subjects receiving the experimental drug only do so if they respond to it, while subjects receiving placebo only do so until their symptoms return.⁶

About Bimekizumab
Bimekizumab is an investigational humanized monoclonal IgG1 antibody that selectively inhibits both IL-17A and IL-17F, two key cytokines driving inflammatory processes.⁷ IL-17F has overlapping biology with IL-17A and drives inflammation independently to IL-17A.^8,9,10,11,12 Selective inhibition of IL-17F in addition to IL-17A suppresses inflammation to a greater extent than IL-17A inhibition alone.^11,12 The safety and efficacy of bimekizumab are being evaluated across multiple disease states as part of a robust clinical program. UCB plans to submit applications to regulatory authorities for approval of bimekizumab to treat adults with moderate- to-severe plaque psoriasis in 2020.

About Psoriasis
Psoriasis is a common, chronic inflammatory disease with primary involvement of the skin. This skin condition affects men and women of all ages and ethnicities. Psoriasis signs and symptoms can vary but may include red patches of skin covered with silvery scales; dry, cracked skin that may bleed; and thickened, pitted or ridged nails.¹³

Psoriasis affects nearly three percent of the population, or about 125 million people worldwide.¹⁴ Unmet needs remain in the treatment of psoriasis. A population-based survey identified that approximately 30 percent of psoriasis patients reported that their primary goals of therapy, including keeping symptoms under control, reducing itching and decreasing flaking, were not met with their current treatment.¹⁵ Failure to achieve or retain complete and lasting skin clearance negatively impacts disease progression and quality of life.¹⁶

UCB Response to COVID-19
UCB is committed to helping those impacted by the novel coronavirus, COVID-19. This includes helping patients maintain access to and answering any questions about UCB medicines. We are also working closely with regulatory authorities to ensure the safety of all clinical trial participants and investigators, maintain compliance with good clinical practice, and minimize risks to trial integrity. The evolving COVID-19 pandemic has placed tremendous strain on medical healthcare systems worldwide as they focus on the ongoing extraordinary medical emergency. Taking this into consideration, UCB has taken measures to protect patients, healthcare providers, our employees, and the communities we serve around the world.

About UCB
UCB, Brussels, Belgium (www.ucb.com) is a global biopharmaceutical company focused on the discovery and development of innovative medicines and solutions to transform the lives of people living with severe diseases of the immune system or of the central nervous system. With more than 7 600 people in approximately 40 countries, the company generated revenue of € 4.9 billion in 2019. UCB is listed on Euronext Brussels (symbol: UCB). Follow us on Twitter: @UCBUSA.

Forward looking statements UCB
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Given these uncertainties, you should not place undue reliance on any of such forward-looking statements. There can be no guarantee that the investigational or approved products described in this press release will be submitted or approved for sale or for any additional indications or labelling in any market, or at any particular time, nor can there be any guarantee that such products will be or will continue to be commercially successful in the future.

UCB is providing this information, including forward-looking statements, only as of the date of this press release and it does not reflect any potential impact from the evolving COVID-19 pandemic, unless indicated otherwise. UCB is following the worldwide developments diligently to assess the financial significance of this pandemic to UCB. UCB expressly disclaims any duty to update any information contained in this press release, either to confirm the actual results or to report or reflect any change in its forward-looking statements with regard thereto or any change in events, conditions or circumstances on which any such statement is based, unless such statement is required pursuant to applicable laws and regulations.

Additionally, information contained in this document shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any offer, solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of such jurisdiction.

For further information, UCB:

Corporate Communications

Laurent Schots, Media Relations, UCB

T+32.2.559.92.64,

laurent.schots@ucb.com

Investor Relations

Antje Witte, Investor Relations, UCB

T +32.2.559.94.14,

antje.witte@ucb.com

Isabelle Ghellynck, Investor Relations, UCB

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Immunology Communications

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1 Reich K, Papp KA, Blauvelt A, et al. Efficacy and safety of bimekizumab in patients with moderate-to-severe plaque psoriasis: results from BE VIVID, a 52-week Phase 3, randomized, double-blinded, ustekinumab- and placebo-controlled study. Late-breaking virtual presentation for AAD 2020.
2 Gordon K, Foley P, Krueger J, et al. Efficacy and safety of bimekizumab in patients with moderate-to-severe plaque psoriasis: results from BE READY, a 56-week Phase 3, randomized, double-blinded, placebo-controlled study with randomized withdrawal. Late-breaking virtual presentation for AAD 2020.
3 Blauvelt A, Merola JF, Papp KA, et al. Durability of responses with bimekizumab, a selective dual inhibitor of interleukin (IL)-17A and -17F, in moderate-to-severe chronic plaque psoriasis in a 60-week randomized, double-blinded, Phase 2b study (BE ABLE 2). Abstract presented virtually for AAD 2020.
4 ClinicalTrials.gov. A Study to Evaluate the Efficacy and Safety of Bimekizumab Compared to Placebo and an Active Comparator in Adult Subjects With Moderate to Severe Chronic Plaque Psoriasis (BE VIVID). Available at: https://clinicaltrials.gov/ct2/show/NCT03370133. Last accessed: May 2020.
5 ClinicalTrials.gov. A Study With a Initial Treatment Period Followed by a Randomized-withdrawal Period to Evaluate the Efficacy and Safety of Bimekizumab in Adult Subjects With Moderate to Severe Chronic Plaque Psoriasis (BE READY). Available at: https://clinicaltrials.gov/ct2/show/NCT03410992. Last accessed: May 2020.
6 U.S. Food and Drug Administration (FDA). Enrichment Strategies for Clinical Trials to Support Determination of Effectiveness of Human Drugs and Biological Products Guidance for Industry. 2019. Available at: https://www.fda.gov/media/121320/download. Last accessed: May 2020.
7 Glatt S, Helmer E, Haier B, et al. First-in-human randomized study of bimekizumab, a humanized monoclonal antibody and selective dual inhibitor of IL-17A and IL-17F, in mild psoriasis. Br J Clin Pharmacol. 2017;83(5):991-1001.

8 Yang XO, Chang SH, Park H, et al. Regulation of inflammatory responses by IL-17F. J Exp Med. 2008;205(5):1063–1075.

9 Hymowitz SG, Filvaroff EH, Yin JP, et al. IL-17s adopt a cystine knot fold: structure and activity of a novel cytokine, IL-17F, and implications for receptor binding. Embo J. 2001;20(19):5332–5341.

10 van Baarsen LG, Lebre MC, van der Coelen D, et al. Heterogeneous expression pattern of interleukin 17A (IL-17A), IL- 17F and their receptors in synovium of rheumatoid arthritis, psoriatic arthritis and osteoarthritis: possible explanation for nonresponse to anti-IL-17 therapy? Arthritis Res Ther. 2014;16(4):426.
11 Maroof A, Okoye R, Smallie T, et al. Bimekizumab dual inhibition of IL-17A and IL-17F provides evidence of IL-17F contribution to chronic inflammation in disease-relevant cells. Ann Rheum Dis. 2017;76(2):213.
12 Glatt S, Baeten D, Baker T, et al. Dual IL-17A and IL-17F neutralisation by bimekizumab in psoriatic arthritis: evidence from preclinical experiments and a randomised placebo-controlled clinical trial that IL-17F contributes to human chronic tissue inflammation. Ann Rheum Dis. 2018;77(4):523-532.
13 International Federation of Psoriasis Associations. Available at: https://ifpa-pso.com/our-cause/. Last accessed: May 2020.
14 National Psoriasis Foundation. Statistics. Available at: https://www.psoriasis.org/content/statistics. Last accessed: May 2020.
15 Lebwohl MG, Kavanaugh A, Armstrong AW et al. US Perspectives in the Management of Psoriasis and Psoriatic Arthritis: Patient and Physician Results from the Population-Based Multinational Assessment of Psoriasis and Psoriatic Arthritis (MAPP) Survey. Am J Clin Dermatol. 2016;17(1):87-97.
16 Moon HS, Mizara A, McBride SR. Psoriasis and psycho-dermatology. Dermatol Ther (Heidelb). 2013;3(2):117-130.

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