UCB Announces U.S. FDA Approvals for BIMZELX® (bimekizumab-bkzx) for the Treatment of Psoriatic Arthritis, Non-Radiographic Axial Spondyloarthritis, and Ankylosing Spondylitis

September 23, 2024 |

22 min read

With three new indications, BIMZELX^®(bimekizumab-bkzx) is the first and only IL-17A and IL-17F inhibitor approved in the U.S. for the treatment of four chronic immune-mediated inflammatory diseases
Approval in active PsA is supported by two Phase 3 studies in which BIMZELX showed statistically significant improvements vs. placebo at Week 16 in both joint and skin symptoms, across biologic-naïve and TNF inhibitor-inadequate responder populations, which were sustained to Week 52
Approvals in active nr-axSpA and active AS are supported by two Phase 3 studies, in which BIMZELX showed statistically significant improvements vs. placebo in signs and symptoms at Week 16, which were sustained to Week 52

ATLANTA, Sept. 23, 2024 /PRNewswire/ -- UCB, a global biopharmaceutical company, announced today that the U.S. Food and Drug Administration (FDA) has approved BIMZELX^® (bimekizumab-bkzx) for the treatment of adults with active psoriatic arthritis (PsA), adults with active non-radiographic axial spondyloarthritis (nr-axSpA) with objective signs of inflammation, and adults with active ankylosing spondylitis (AS).¹ BIMZELX is the first approved treatment for these three indications that is designed to selectively inhibit two key cytokines driving inflammatory processes – interleukin 17A (IL-17A) and interleukin 17F (IL-17F).¹ These newly approved indications follow the first U.S. approval for BIMZELX in October 2023 for the treatment of moderate-to-severe plaque psoriasis in adults who are candidates for systemic therapy or phototherapy.¹

“The approval of BIMZELX in the U.S. across three new indications – active psoriatic arthritis, active non-radiographic axSpA with objective signs of inflammation, and active ankylosing spondylitis – highlights the clinical benefit of dual inhibition of both IL-17A and IL-17F for patients, and provides an opportunity for more people living with chronic inflammatory diseases to achieve meaningful outcomes,” said Emmanuel Caeymaex, Executive Vice President, Head of Patient Impact and Chief Commercial Officer, UCB. “In psoriatic arthritis and across the spectrum of axSpA, clinical study results and real-world experience outside the U.S. have highlighted that BIMZELX can help patients achieve high thresholds of clinical response that are rapid in onset and sustained up to two years.”

The FDA recommended dosage of BIMZELX for adult patients with active PsA, active nr-axSpA with objective signs of inflammation, and active AS is 160 mg by subcutaneous injection every four weeks.¹ For PsA patients with coexistent moderate-to-severe plaque psoriasis, the dosage and administration is the same as for patients with moderate-to-severe plaque psoriasis.¹ BIMZELX is currently available for eligible patients.

BIMZELX for the treatment of adults with active psoriatic arthritis
“In Phase 3 clinical studies, the clinically meaningful and consistent clinical response in patients who had a previous inadequate response to TNF inhibitors, and in patients who were new to biologics, suggest that bimekizumab-bkzx has the potential to be an important new treatment option in our armamentarium for adults with psoriatic arthritis,” said Joseph F. Merola, MD, MMSc, Professor, Dermatologist, Rheumatologist, and Investigator, BE OPTIMAL and BE COMPLETE. “The approval of bimekizumab-bkzx for the treatment of active psoriatic arthritis provides a new, differentiated treatment option for the rheumatology and dermatology communities.”

The approval of BIMZELX for adult patients with active PsA is supported by data from the Phase 3 BE OPTIMAL and BE COMPLETE studies, in which BIMZELX met the primary endpoint of American College of Rheumatology 50 (ACR50) response at Week 16 versus placebo, and all ranked secondary endpoints.^2,3 Consistent results were seen across both biologic-naïve and TNF inhibitor‑inadequate responder (TNFi-IR) populations.²^,³ Clinical responses achieved at Week 16 were sustained to Week 52 in BE OPTIMAL and in BE COMPLETE, and its open-label extension, as assessed by ACR50 (primary endpoint), Psoriasis Area and Severity Index 90 (PASI90; ranked secondary endpoint), minimal disease activity (MDA; ranked secondary endpoint) and PASI100, i.e., complete skin clearance (other endpoint).^4,5

“Psoriatic arthritis can severely impact a person’s quality of life. With joint pain and stiffness, daily activities can become burdensome. New treatment options are always a welcome addition, and they offer some renewed hope for relief from the symptoms and health impacts of PsA,” said Leah M. Howard, J.D., the President and CEO of the National Psoriasis Foundation, U.S.

BIMZELX for the treatment of adults with active nr-axSpA and active AS
“In the Phase 3 clinical studies, patients treated with bimekizumab-bkzx saw improvements in signs and symptoms and key measures of disease activity at Week 16 which were sustained to one year and consistent across patients with non-radiographic axial spondyloarthritis and ankylosing spondylitis,” said Atul Deodhar, MD, Professor of Medicine and Medical Director of Rheumatology Clinics at the Division of Arthritis & Rheumatic Diseases, Oregon Health & Science University, Portland, Oregon, U.S. “The U.S. rheumatology community welcomes the approval of bimekizumab-bkzx for use across the entire spectrum of axial spondyloarthritis, especially given that there are few options approved currently to treat both non-radiographic axial spondyloarthritis and ankylosing spondylitis.”

The approvals of BIMZELX for adult patients with active nr-axSpA with objective signs of inflammation, and active AS are supported by data from the Phase 3 BE MOBILE 1 and BE MOBILE 2 studies, respectively.^6,7 In both studies, BIMZELX met the primary endpoint of Assessment of SpondyloArthritis international Society 40 (ASAS40) response at Week 16 compared with placebo, and all ranked secondary endpoints.⁶^,⁷ ASAS40 responses were consistent across TNFi-naïve and TNFi-inadequate responder patients.⁶^,⁷ Clinical responses achieved at Week 16 were sustained in both patients with nr-axSpA and AS to Week 52 as assessed by ASAS40, ranked secondary and other endpoints.⁶^,⁷

“People living with non-radiographic axial spondyloarthritis and ankylosing spondylitis experience pain, stiffness and fatigue that can limit their daily activities, ability to work, and quality of life,” said Seth Ginsberg, Co-Founder and President, Global Health Living Foundation and CreakyJoints, U.S. “A new treatment option offers the opportunity for more patients to reach their treatment goals.”

Additional information about BIMZELX, including the full prescribing information, is available at UCB-USA.com/Innovation/Products/BIMZELX. For additional medical information, patient assistance or any other information, please call UCBCares^® at 1-844-599-CARE (2273) or visit askucbcares.com. UCB’s goal is to enable affordable access to our medicines for all people who need them, in a way which is sustainable for patients, society and UCB. Full affordability information can be found at UCB-USA.com/Affordability and www.BIMZELX.com.

Notes to Editors:

About Psoriatic Arthritis
Psoriatic arthritis (PsA) is a serious, highly heterogeneous, chronic, systemic inflammatory condition affecting both the joints and skin, with a prevalence of 0.02 percent to 0.25 percent of the population.⁸ PsA affects approximately 30 percent of people living with psoriasis.⁹ Symptoms include joint pain and stiffness, skin plaques, swollen toes and fingers (dactylitis), inflammation of the sites where tendons or ligaments insert into the bone (enthesitis), and inflammatory axial involvement.¹⁰

About BE OPTIMAL and BE COMPLETE²^,³^,⁴^,⁵

BIMZELX (160 mg every four weeks) was evaluated in adult patients with active psoriatic arthritis (PsA) in two Phase 3 multicenter, randomized, double-blind, placebo-controlled studies (BE OPTIMAL and BE COMPLETE). The BE OPTIMAL study evaluated 852 patients not previously exposed to any biologic disease-modifying anti-rheumatic drug (bDMARD-naïve) for the treatment of PsA. The BE COMPLETE study evaluated 400 patients with an inadequate response or intolerance to treatment with one or two tumor necrosis factor alpha inhibitors (TNFi-IR) for the treatment of PsA.

Key findings from the Phase 3 Clinical Development Program:

Joint Symptoms, ACR50: In bDMARD-naïve and TNFi-IR patients, 44 percent (n=189/431) and 43 percent (n=116/267) receiving BIMZELX achieved ACR50 response (primary endpoint) at Week 16, respectively, versus 10 percent (n=28/281) and 7 percent (n=9/133) receiving placebo (p<0.0001).²^,³ Clinical responses were generally sustained to Week 52.⁴^,⁵
Minimal Disease Activity (MDA): In bDMARD-naïve and TNFi-IR populations, 45 percent (n=194/431) and 44 percent (n=118/267) of patients receiving BIMZELX achieved MDA (key ranked secondary endpoint) at Week 16, respectively, versus 13 percent (n=37/281) and 6 percent (n=8/133) receiving placebo (p<0.0001).²^,³ Clinical responses were generally sustained to Week 52.⁴^,⁵
Skin Symptoms, Complete Skin Clearance (PASI100): In bDMARD-naïve and TNFi-IR populations, 47 percent (n=103/217) and 59 percent (n=103/176) of patients with baseline psoriasis affecting ≥3 percent of surface area receiving BIMZELX achieved complete skin clearance (PASI100; other endpoint) at Week 16, respectively, versus 2 percent (n=3/140) and 5 percent (n=4/88) receiving placebo.²^,³ Clinical responses were generally sustained to Week 52.⁴^,⁵

In PsA, the most common (≥ 2 percent) adverse reactions with bimekizumab-bkzx are upper respiratory tract infections, oral candidiasis, headache, diarrhea and urinary tract infection.¹

About Axial Spondyloarthritis
Axial spondyloarthritis (axSpA), which includes both non-radiographic axSpA (nr-axSpA) and ankylosing spondylitis (AS), also known as radiographic axial spondyloarthritis (r-axSpA), is a chronic, immune-mediated, inflammatory disease.¹¹ Non-radiographic-axSpA (nr-axSpA) is defined clinically by the absence of definitive x-ray evidence of structural damage to the sacroiliac joints.¹¹ axSpA is a painful condition that primarily affects the spine and the joints linking the pelvis and lower spine (sacroiliac joints).¹¹ The leading symptom of axSpA in a majority of patients is inflammatory back pain that improves with exercise, but not with rest.¹¹ Other common clinical features frequently include anterior uveitis, enthesitis, peripheral arthritis, psoriasis, inflammatory bowel disease, and dactylitis.¹¹ The overall prevalence of axSpA is up to 1.4 percent of adults.^12,13 Approximately half of all patients with axSpA are patients with nr-axSpA.¹¹ Axial spondyloarthritis onset usually occurs before the age of 45.¹¹ Approximately 10 to 40 percent of patients with nr-axSpA progress to ankylosing spondylitis over 2 to 10 years.¹¹

About BE MOBILE 1 and BE MOBILE 2⁶^,⁷

The efficacy and safety of BIMZELX, 160 mg every four weeks, were evaluated in two Phase 3 multicenter, randomized, double-blind, placebo-controlled studies, one in non-radiographic axSpA (nr-axSpA; BE MOBILE 1) and one in ankylosing spondylitis (AS; BE MOBILE 2). The BE MOBILE 1 and BE MOBILE 2 studies evaluated 254 and 332 patients, respectively.

Key findings from the Phase 3 BE MOBILE 1 and BE MOBILE 2 studies:

ASAS40: In nr-axSpA and AS populations, 47.7 percent (n=61/128) and 44.8 percent (n=99/221), respectively, of patients receiving BIMZELX achieved the primary endpoint of ASAS40 response at Week 16, versus 21.4 percent (n=27/126) and 22.5 percent (n=25/111) receiving placebo (p<0.001).⁶ Clinical responses were sustained to Week 52, with consistent outcomes across both TNFi-naïve and TNFi-inadequate responder populations.⁷
Low Disease Activity: Low disease activity (Ankylosing Spondylitis Disease Activity Score (ASDAS) <2.1, an exploratory endpoint) was achieved at Week 16 by 46.2 percent of patients with nr-axSpA and 44.9 percent of patients with AS versus 20.6 percent and 17.5 percent in the placebo group.⁶ In the two studies, approximately 6 out of 10 patients treated with BIMZELX achieved ASDAS<2.1 by Week 52.⁷
Inflammation: Sustained reduction of objective inflammatory signs in both sacroiliac joints and the spine was observed in patients with nr-axSpA and patients with AS treated with BIMZELX versus placebo as assessed by magnetic resonance imaging at Week 16 and Week 52, an exploratory endpoint.⁶^,⁷

In nr-axSpA, the most common (≥ 2 percent) adverse reactions with bimekizumab-bkzx are upper respiratory tract infections, oral candidiasis, headache, diarrhea, cough, fatigue, musculoskeletal pain, myalgia, tonsilitis, transaminase increase and urinary tract infection.¹

In AS, the most common (≥ 2 percent) adverse reactions with bimekizumab-bkzx are upper respiratory tract infections, oral candidiasis, headache, diarrhea, injection site pain, rash and vulvovaginal mycotic infection.¹

About BIMZELX (bimekizumab-bkzx)
BIMZELX is a humanized IgG1 monoclonal antibody that selectively binds to IL-17A, IL-17F and IL-17AF cytokines, blocking their interaction with the IL-17RA/IL-17RC receptor complex.¹ Elevated levels of IL-17A and IL-17F are found in lesional psoriatic skin.¹

Please see Important Safety Information below and full U.S. Prescribing Information at www.UCB-USA.com/Innovation/Products/BIMZELX and www.BIMZELX.com.

BIMZELX U.S. IMPORTANT SAFETY INFORMATION

Suicidal Ideation and Behavior
BIMZELX^®(bimekizumab-bkzx) may increase the risk of suicidal ideation and behavior (SI/B). A causal association between treatment with BIMZELX and increased risk of SI/B has not been established. Prescribers should weigh the potential risks and benefits before using BIMZELX in patients with a history of severe depression or SI/B. Advise monitoring for the emergence or worsening of depression, suicidal ideation, or other mood changes. If such changes occur, advise to promptly seek medical attention, refer to a mental health professional as appropriate, and re-evaluate the risks and benefits of continuing treatment. Infections
BIMZELX may increase the risk of infections. Do not initiate treatment with BIMZELX in patients with any clinically important active infection until the infection resolves or is adequately treated. In patients with a chronic infection or a history of recurrent infection, consider the risks and benefits prior to prescribing BIMZELX. Instruct patients to seek medical advice if signs or symptoms suggestive of clinically important infection occur. If a patient develops such an infection or is not responding to standard therapy, monitor the patient closely and do not administer BIMZELX until the infection resolves. Tuberculosis
Evaluate patients for tuberculosis (TB) infection prior to initiating treatment with BIMZELX. Avoid the use of BIMZELX in patients with active TB infection. Initiate treatment of latent TB prior to administering BIMZELX. Consider anti-TB therapy prior to initiation of BIMZELX in patients with a past history of latent or active TB in whom an adequate course of treatment cannot be confirmed. Closely monitor patients for signs and symptoms of active TB during and after treatment. Liver Biochemical Abnormalities
Elevated serum transaminases were reported in clinical trials with BIMZELX. Test liver enzymes, alkaline phosphatase, and bilirubin at baseline, periodically during treatment with BIMZELX, and according to routine patient management. If treatment-related increases in liver enzymes occur and drug-induced liver injury is suspected, interrupt BIMZELX until a diagnosis of liver injury is excluded. Permanently discontinue use of BIMZELX in patients with causally associated combined elevations of transaminases and bilirubin. Avoid use of BIMZELX in patients with acute liver disease or cirrhosis. Inflammatory Bowel Disease
Cases of inflammatory bowel disease (IBD) have been reported in patients treated with IL-17 inhibitors, including BIMZELX. Avoid use of BIMZELX in patients with active IBD. During BIMZELX treatment, monitor patients for signs and symptoms of IBD and discontinue treatment if new onset or worsening of signs and symptoms occurs. Immunizations
Prior to initiating therapy with BIMZELX, complete all age-appropriate vaccinations according to current immunization guidelines. Avoid the use of live vaccines in patients treated with BIMZELX. MOST COMMON ADVERSE REACTIONS
Most common (≥ 1%) adverse reactions in plaque psoriasis include upper respiratory tract infections, oral candidiasis, headache, injection site reactions, tinea infections, gastroenteritis, Herpes Simplex infections, acne, folliculitis, other candida infections, and fatigue.

Most common (≥ 2%) adverse reactions in psoriatic arthritis include upper respiratory tract infections, oral candidiasis, headache, diarrhea, and urinary tract infection.

Most common (≥ 2%) adverse reactions in non-radiographic axial spondyloarthritis include upper respiratory tract infections, oral candidiasis, headache, diarrhea, cough, fatigue, musculoskeletal pain, myalgia, tonsilitis, transaminase increase, and urinary tract infection.

Most common (≥ 2%) adverse reactions in ankylosing spondylitis include upper respiratory tract infections, oral candidiasis, headache, diarrhea, injection site pain, rash, and vulvovaginal mycotic infection.

For further information, contact UCB:

Investor Relations
Antje Witte
T +32.2.559.94.14
email antje.witte@ucb.com Brand Communications
Nicole Herga
T +1.773.960.5349
email nicole.herga@ucb.com

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 approximately 9,000 people in approximately 40 countries, the company generated revenue of €5.3 billion in 2023. UCB is listed on Euronext Brussels (symbol: UCB). Follow us on Twitter: @UCBUSA.

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References

BIMZELX^® (bimekizumab-bkzx) U.S. Prescribing Information. https://www.ucb-usa.com/Innovation/Products/BIMZELX. Accessed September 2024.
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Merola JF, Landewé R, McInnes IB, et al. Bimekizumab in patients with active psoriatic arthritis and previous inadequate response or intolerance to tumour necrosis factor-α inhibitors: a randomised, double-blind, placebo-controlled, phase 3 trial (BE COMPLETE). Lancet. 2023;401(10370):38–48.
Ritchlin CT, Coates LC, McInnes IB, et al. Bimekizumab treatment in biologic DMARD-naïve patients with active psoriatic arthritis: 52-week efficacy and safety results from the phase III, randomised, placebo-controlled, active reference BE OPTIMAL study. Ann Rheum Dis. 2023;82:1404–14.
Coates LC, Landewé R, McInnes IB, et al. Bimekizumab treatment in patients with active psoriatic arthritis and prior inadequate response to tumour necrosis factor inhibitors: 52-week safety and efficacy from the phase III BE COMPLETE study and its open-label extension BE VITAL. RMD Open. 2024;10:e003855.
van der Heijde D, Deodhar A, Baraliakos X, et al. Efficacy and safety of bimekizumab in axial spondyloarthritis: results of two parallel phase 3 randomized controlled trials. Ann Rheum Dis. 2023;82:515–26.
Baraliakos X, Deodhar A, van der Heijde D, et al. Bimekizumab treatment in patients with active axial spondyloarthritis: 52-week efficacy and safety from the randomised parallel phase 3 BE MOBILE 1 and BE MOBILE 2 studies. Ann Rheum Dis. 2024;83(2):199–213.
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Mease PJ, Gladman DD, Papp KA, et al. Prevalence of rheumatologist-diagnosed psoriatic arthritis in patients with psoriasis in European/North American dermatology clinics. J Am Acad Dermatol. 2013;69(5):729-735. doi: 10.1016/j.jaad.2013.07.023.
Mease PJ, Armstrong AW. Managing patients with psoriatic disease: the diagnosis and pharmacologic treatment of psoriatic arthritis in patients with psoriasis. Drugs. 2014;74:423–41.
Deodhar A. Understanding Axial Spondyloarthritis: A Primer for Managed Care. Am J Manag Care. 2019;25:S319-30.
Reveille J, Witter J, Weisman M. Prevalence of axial spondylarthritis in the United States: estimates from a cross-sectional survey. Arthritis Care Res. 2012;64(6):905–10.
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US-BK-2401151

Date of preparation: September 2024

BIMZELX^® and UCBCares^® are registered trademarks of the UCB Group of Companies.

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