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the official website of the antibody society

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Bimekizumab authorized for marketing in the EU

August 24, 2021 by Janice Reichert

On August 20, 2021, the European Commission authorized marketing of Bimzelx (bimekizumab) in the EU for the treatment of moderate to severe plaque psoriasis in adults who are candidates for systemic therapy. Bimekizumab is a humanized IgG1 kappa antibody that selectively inhibits IL-17A and IL-17F by binding regions that are common to these pro-inflammatory cytokines, which share ~50% sequence identity and are expressed as homodimers and IL-17A/F heterodimers. Bimekizumab is approved at a recommended dose of 320 mg, administered by two subcutaneous injections every four weeks to week 16 and every eight weeks thereafter. [1]

The decision to grant a marketing approval was supported by results from 3 Phase 3 studies that included an active comparator arm, ustekinumab (Stellara®; BE VIVID study; NCT03370133), adalimumab (Humira®; BE SURE study; NCT03412747), or secukinumab (Cosentyx®; BE RADIANT study; NCT03536884). All three pivotal studies met their co-primary endpoints at Week 16, demonstrating superiority of bimekizumab over the active comparator in certain defined measures (e.g., Psoriasis Area and Severity Index). Clinical responses achieved with bimekizumab at Week 16 were maintained up to one year. [2-4] Coprimary endpoints were also met in the Phase 3 BE READY study (NCT03410992), which investigated the efficacy and safety of bimekizumab in patients with moderate to severe plaque psoriasis compared to placebo. [5]

Bimzelx is the 8th antibody therapeutic to be first approved for marketing in the EU or US in 2021.

  1. European Medicines Agency. Bimzelx public assessment report.
  2. Reich K, Papp KA, Blauvelt A, et al. Bimekizumab versus ustekinumab for the treatment of moderate to severe plaque psoriasis (BE VIVID): efficacy and safety from a 52-week, multicentre, double-blind, active comparator and placebo-controlled phase 3 trial. Lancet. 2021;397(10273):487-498.
  3. Warren RB, Blauvelt A, Bagel J, et al. Bimekizumab versus Adalimumab in Plaque Psoriasis. N Engl J Med. 2021;385(2):130-141.
  4. Reich K, Warren RB, Lebwohl M, Gooderham M, Strober B, Langley RG, Paul C, De Cuyper D, Vanvoorden V, Madden C, Cioffi C, Peterson L, Blauvelt A. Bimekizumab versus Secukinumab in Plaque Psoriasis. N Engl J Med. 2021 Jul 8;385(2):142-152.
  5. Gordon KB, Foley P, Krueger JG, et al. Bimekizumab efficacy and safety in moderate to severe plaque psoriasis (BE READY): a multicentre, double-blind, placebo-controlled, randomised withdrawal phase 3 trial. Lancet. 2021;397(10273):475-486.

Filed Under: Antibody therapeutic, European Medicines Agency, Immune-medited disorders Tagged With: approved antibodies, bimekizumab, European Medicines Agency, psoriasis

FDA approves anifrolumab for systemic lupus erythematosus

August 3, 2021 by Janice Reichert

On July 30, 2021, the US Food and Drug Administration approved AstraZeneca’s Saphnelo (anifrolumab-fnia) for the treatment of adult patients with moderate to severe systemic lupus erythematosus (SLE) who are receiving standard therapy. The recommended dosage is 300 mg administered as an intravenous infusion over a 30-minute period every 4 weeks. Saphnelo is undergoing regulatory review for SLE in the EU and Japan.

Anifrolumab (MEDI-546) is an interferon (IFN) alpha receptor 1 (IFNAR1)-specific human IgG1κ antibody. It binds to subunit 1 of IFNAR1, thereby blocking the action of different type I IFNs (IFN-α, IFN-β and IFN-ω). The heavy chain of the antibody incorporates 3 mutations, L234F, L235E, and P331S, to decrease effector functions. Type I IFNs are involved in the pathogenesis of SLE, and ~ 60-80% of adult patients with active SLE express elevated levels of type I IFN-inducible genes.

FDA’s approval was based in part on efficacy and safety data from two TULIP Phase 3 trials and the MUSE Phase 2 trial. In these trials, more patients treated with Saphnelo experienced a reduction in overall disease activity across organ systems, including skin and joints, and achieved sustained reduction in oral corticosteroid use compared to placebo, with both groups receiving standard therapy. Clinical study results from the Phase 3 TULIP-2 and TULIP-1 trials were published in The New England Journal of Medicine and in The Lancet Rheumatology, respectively,  while results from the MUSE Phase 2 trial were published in Arthritis & Rheumatology.

Need help keeping up to date on US and EU approvals?

The Antibody Society maintains a comprehensive table of approved monoclonal antibody therapeutics and those in regulatory review in the EU or US in the Web Resources section of our website.

Filed Under: Antibody therapeutic, Food and Drug Administration Tagged With: anifrolumab, antibody therapeutics, approved antibodies, Food and Drug Administration

Needs and challenges of biological controls for AIRR-sequencing standardization: an AIRR-C review published in eLife

July 31, 2021 by Pam Borghardt

Announcing the latest AIRR Community publication!

Adaptive Immune Receptor Repertoire (AIRR) can be deeply analyzed to study its complexity thanks to AIRR-sequencing (AIRR-seq) based on high throughput sequencing. However, like many high-throughput technologies, AIRR-seq comes with several technical challenges, notably the lack of established controls and standards, a necessity when considering current available and envisioned AIRR-seq applications. The Biological Resources Working Group within the AIRR Community, established in 2017, aims at studying, prioritizing and developing biological controls and standardization reagents for AIRR-seq studies. In this article, they review current practices, resources and considerations for using and developing AIRR-seq standards and controls.

Filed Under: Adaptive immune receptor repertoire, AIRR Community, Biological controls Tagged With: Adaptive Immune Receptor Repertoire Community

FDA issues a complete response letter for retifanlimab’s BLA

July 25, 2021 by Janice Reichert

On July 23, 2021, Incyte Corporation announced that the U.S. Food and Drug Administration (FDA) issued a Complete Response letter regarding its Biologics License Application (BLA) for retifanlimab (formerly INCMGA00012, MGA012) for the treatment of adult patients with locally advanced or metastatic squamous cell carcinoma of the anal canal (SCAC) who have progressed on, or who are intolerant of, platinum-based chemotherapy. Retifanlimab, which is a humanized, hinge-stabilized IgG4κ monoclonal antibody targeting programmed cell death protein 1 (PD-1), was granted FDA’s Fast track and Orphan Drug designations for the treatment of anal cancer.

The BLA submission was based on data from the Phase 2 POD1UM-202 trial (NCT03597295) evaluating retifanlimab in previously treated patients with locally advanced or metastatic SCAC who have progressed on, or were ineligible for or intolerant of, platinum-based chemotherapy. The objective response rate was 13.8% (95% confidence interval [Cl]: 7.6, 22.5) based on confirmed tumor responses by independent central radiographic review. Twelve patients (12.8%) had partial responses, 1 patient (1.1 %) had a complete response and 33 (35.1%) had stable disease. On June 24, 2021, FDA’s Oncologic Drug Advisory Committee had voted 13 to 4 for the deferral of the FDA approval of retifanlimab. FDA’s letter indicates that the application cannot be approved in its present form and additional data are needed to demonstrate the clinical benefit of retifanlimab for the treatment of patients with advanced or metastatic SCAC.

In addition to SCAC, retifanlimab is also currently under evaluation as a monotherapy for patients with microsatellite instability-high endometrial cancer, and Merkel cell carcinoma; and in combination with platinum-based chemotherapy for patients with non-small cell lung cancer. Incyte has an exclusive collaboration and license agreement with MacroGenics, Inc. for global rights to retifanlimab and a collaboration and license agreement with Zai Lab for the development and commercialization of retifanlimab in Greater China.

Need help keeping up to date on US and EU approvals?

The Antibody Society maintains a comprehensive table of approved monoclonal antibody therapeutics and those in regulatory review in the EU or US in the Web Resources section of our website.

Filed Under: Food and Drug Administration, Regulatory review Tagged With: cancer, Food and Drug Administration, retifanlimab

2021 Science Writing Competition winners announced

July 11, 2021 by Janice Reichert

Congratulations to our winners!

To make science accessible, clear, concise communication is essential. The Antibody Society thus offers our student and post-doctoral fellow members a chance to grow this skill through a Science Writing Competition. Entrants submitted essays of 1200 – 1500 words on a topic related to antibody research that were evaluated by our panel of judges. Our two winners are:

Dr. Monica Fernández-Quintero, University of Innsbruck, Austria

Essay title: Antibody’s Next Top Model – CDR loop ensembles from molecular dynamics simulations guiding antibody design and docking.

Matthew Thomas, Trinity College Dublin, Ireland

Essay title: Saint Peregrine and the programmable bacilli: Nanobodies and the bacteria that make them.

We also selected one entrant for honorable mention, in recognition of their creative writing and bold use of a literary style:

Dr. Finn Wolfreys, University of California, San Francisco, USA

Essay title: A Short Biography of Antibodies

Their essays can be accessed via the links above. Winners will be offered an opportunity to give a short talk on their essay topic in a Society webinar, and they also receive free registration to one meeting we co-promote, as listed on our Upcoming Meetings page, or a meeting that we organize.

Thanks to everyone who participated!

Filed Under: Writing competition Tagged With: Science Writing, writing competition

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