New Biologic Therapy Available for Broad Population of Severe Asthma Patients Without Phenotype or Biomarker Limitations

AstraZeneca and Amgen today announced TEZSPIRE™ (tezepelumab-ekko) is now available for shipment to wholesalers in the US. TEZSPIRE was approved by the US Food and Drug Administration (FDA) on December 17, 2021 for the add-on maintenance treatment of adult and pediatric patients aged 12 years and older with severe asthma.¹

Mina Makar, Senior Vice President, US Respiratory & Immunology, AstraZeneca, said: “Due to the complexity of severe asthma, many patients living with the disease continue to experience frequent exacerbations, an increased risk of hospitalization and a reduced quality of life. With TEZSPIRE now available, this important new treatment has the potential to transform care for a broad population of patients living with severe asthma.”

TEZSPIRE is a first-in-class biologic for severe asthma that acts at the top of the inflammatory cascade by targeting thymic stromal lymphopoietin (TSLP), an epithelial cytokine.² TEZSPIRE is the first and only biologic approved for severe asthma with no phenotype (e.g. eosinophilic or allergic) or biomarker limitation within its approved label.^1,3-8 TEZSPIRE consistently and significantly reduced asthma exacerbations across Phase II and III clinical trials which included a broad population of severe asthma patients irrespective of key biomarkers, including blood eosinophil counts, allergic status and fractional exhaled nitric oxide (FeNO).^2,9

In clinical studies, the most common adverse reactions in patients who received TEZSPIRE were pharyngitis, arthralgia and back pain.¹

AstraZeneca and Amgen are committed to providing appropriate patients who are prescribed TEZSPIRE with affordable access to the medicine. The Tezspire Together Program offers provider and patient product resources and support, including information related to coverage, reimbursement and distribution. For more information about the Tezspire Together Program, call 1-888-TZSPIRE (1-888-897-7473) or visit Tezspire.com.

AstraZeneca and Amgen also provide patient assistance for TEZSPIRE for qualifying individuals with no or limited drug coverage by providing free medicines through the Tezspire Patient Assistance Program. For additional information, patients and caregivers may contact Tezspire Together.

TEZSPIRE™ (tezepelumab-ekko) US Indication

TEZSPIRE is indicated for the add-on maintenance treatment of adult and pediatric patients aged 12 years and older with severe asthma.

TEZSPIRE is not indicated for the relief of acute bronchospasm or status asthmaticus.

TEZSPIRE™ (tezepelumab-ekko) Important Safety Information

CONTRAINDICATIONS

Known hypersensitivity to tezepelumab-ekko or excipients.

WARNINGS AND PRECAUTIONS

Hypersensitivity Reactions

Hypersensitivity reactions (e.g., rash and allergic conjunctivitis) can occur following administration of TEZSPIRE. These reactions can occur within hours of administration, but in some instances have a delayed onset (i.e., days). In the event of a hypersensitivity reaction, initiate appropriate treatment as clinically indicated and then consider the benefits and risks for the individual patient to determine whether to continue or discontinue treatment with TEZSPIRE.

Acute Asthma Symptoms or Deteriorating Disease

TEZSPIRE should not be used to treat acute asthma symptoms, acute exacerbations, acute bronchospasm, or status asthmaticus.

Abrupt Reduction of Corticosteroid Dosage

Do not discontinue systemic or inhaled corticosteroids abruptly upon initiation of therapy with TEZSPIRE. Reductions in corticosteroid dose, if appropriate, should be gradual and performed under the direct supervision of a physician. Reduction in corticosteroid dose may be associated with systemic withdrawal symptoms and/or unmask conditions previously suppressed by systemic corticosteroid therapy.

Parasitic (Helminth) Infection

It is unknown if TEZSPIRE will influence a patient’s response against helminth infections. Treat patients with pre-existing helminth infections before initiating therapy with TEZSPIRE. If patients become infected while receiving TEZSPIRE and do not respond to anti-helminth treatment, discontinue TEZSPIRE until infection resolves.

Live Attenuated Vaccines

The concomitant use of TEZSPIRE and live attenuated vaccines has not been evaluated. The use of live attenuated vaccines should be avoided in patients receiving TEZSPIRE.

ADVERSE REACTIONS

The most common adverse reactions (incidence ≥3%) are pharyngitis, arthralgia, and back pain.

USE IN SPECIFIC POPULATIONS

There are no available data on TEZSPIRE use in pregnant women to evaluate for any drug-associated risk of major birth defects, miscarriage, or other adverse maternal or fetal outcomes. Placental transfer of monoclonal antibodies such as Tezepelumab-ekko is greater during the third trimester of pregnancy; therefore, potential effects on a fetus are likely to be greater during the third trimester of pregnancy.

Please see the TEZSPIRE full Prescribing Information.

You may report side effects related to AstraZeneca products by clicking here.

Notes

Severe asthma

Asthma is a heterogeneous disease affecting an estimated 339 million people worldwide.¹⁰ Approximately 10% of asthma patients have severe asthma.^11,12 Despite the use of inhaled asthma controller medicine, currently available biologic therapies and oral corticosteroids (OCS), many severe asthma patients remain uncontrolled.^11-13 Due to the complexity of severe asthma, many patients have unclear or multiple drivers of inflammation and may not qualify for or respond well to a current biologic medicine.^12-15

Severe, uncontrolled asthma is debilitating with patients experiencing frequent exacerbations, significant limitations on lung function and a reduced quality of life.^11,12 Patients with severe asthma are at an increased risk of mortality and compared to patients with persistent asthma have twice the risk of asthma-related hospitalizations.^16-19 There is also a significant socio-economic burden, with these patients accounting for approximately 50% of asthma-related costs.²⁰

Clinical trials

In addition to the Phase IIb PATHWAY trial, the PATHFINDER program included two Phase III trials, NAVIGATOR^9,21 and SOURCE.^22,23 The program also includes additional mechanistic and long-term safety trials.^24,25

NAVIGATOR is a Phase III, randomized, double-blinded, placebo-controlled trial in adults (18–80 years old) and adolescents (12–17 years old) with severe, uncontrolled asthma, who were receiving standard of care (SoC). SoC was treatment with medium- or high-dose inhaled corticosteroids plus at least one additional controller medication with or without daily OCS treatment. The trial population included approximately equal proportions of patients with high (≥300 cells per microliter) and low (<300 cells per microliter) blood eosinophil counts. The trial comprised a five-to-six-week screening period, a 52-week treatment period and a 12-week post-treatment follow-up period. All patients received their prescribed controller medications without change throughout the trial.⁹

The primary efficacy endpoint was the annualized asthma exacerbation rate (AAER) during the 52-week treatment period. Key secondary endpoints included the effect of TEZSPIRE on lung function, asthma control and health-related quality of life.⁹

As part of prespecified analyses, the AAER over 52 weeks was also assessed in patients grouped by baseline blood eosinophil count, FeNO level and serum specific immunoglobin E (IgE) status (perennial aeroallergen sensitivity positive or negative).⁹ These are inflammatory biomarkers used by clinicians to inform treatment options and involve tests analyzing a patient’s blood (eosinophils/IgE) and exhaled air (FeNO).

There were no clinically meaningful differences in safety results between the TEZSPIRE and placebo groups in the NAVIGATOR trial.⁹ The most frequently reported adverse events for TEZSPIRE were nasopharyngitis, upper respiratory tract infection and headache.⁹

NAVIGATOR is the first Phase III trial to show benefit in severe asthma irrespective of eosinophils by targeting TSLP.⁹ These results support the FDA Breakthrough Therapy Designation granted to TEZSPIRE in September 2018 for patients with severe asthma, without an eosinophilic phenotype. In July 2021, TEZSPIRE was the first and only biologic to be granted Priority Review in the US for the treatment of asthma by the FDA.

Patients who participated in our Phase III trials were eligible to continue in DESTINATION, a Phase III extension trial assessing long-term safety and efficacy.²⁴

TEZSPIRE

TEZSPIRE™ (tezepelumab) is being developed by AstraZeneca in collaboration with Amgen as a first-in-class human monoclonal antibody that inhibits the action of TSLP, a key epithelial cytokine that sits at the top of multiple inflammatory cascades and is critical in the initiation and persistence of allergic, eosinophilic and other types of airway inflammation associated with severe asthma, including airway hyperresponsiveness.^2,26 TSLP is released in response to multiple triggers associated with asthma exacerbations, including allergens, viruses and other airborne particles.^2,26 Expression of TSLP is increased in the airways of patients with asthma and has been correlated with disease severity.^2,27 Blocking TSLP may prevent the release of pro-inflammatory cytokines by immune cells, resulting in the prevention of asthma exacerbations and improved asthma control.^1,2,9,27 TEZSPIRE acts at the top of the inflammation cascade and has the potential to help address a broad population of severe asthma patients irrespective of biomarker levels.^2,9

TEZSPIRE is also in development for other potential indications including chronic obstructive pulmonary disease, chronic rhinosinusitis with nasal polyps, chronic spontaneous urticaria and eosinophilic esophagitis (EoE). In October 2021, tezepelumab was granted Orphan Drug Designation by the FDA for the treatment of EoE.

Amgen collaboration

In 2020, AstraZeneca and Amgen updated a 2012 collaboration agreement for TEZSPIRE. Both companies will continue to share costs and profits equally after payment by AstraZeneca of a mid single-digit inventor royalty to Amgen. AstraZeneca continues to lead development and Amgen continues to lead manufacturing. All aspects of the collaboration are under the oversight of joint governing bodies. Under the amended agreement, AstraZeneca and Amgen will jointly commercialize TEZSPIRE in North America. Amgen will record product sales in the US, with AZ recording its share of US profits as Collaboration Revenue. Outside of the US, AstraZeneca will record product sales, with Amgen recording profit share as Other/Collaboration revenue.

AstraZeneca in Respiratory & Immunology

Respiratory & Immunology, part of BioPharmaceuticals, is one of AstraZeneca’s main disease areas and is a key growth driver for the Company.

AstraZeneca is an established leader in respiratory care with a 50-year heritage. The Company aims to transform the treatment of asthma and chronic obstructive pulmonary disease (COPD) by focusing on earlier biology-led treatment, eliminating preventable asthma attacks, and removing COPD as a top-three leading cause of death. The Company’s early respiratory research is focused on emerging science involving immune mechanisms, lung damage and abnormal cell-repair processes in disease and neuronal dysfunction.

With common pathways and underlying disease drivers across respiratory and immunology, AstraZeneca is following the science from chronic lung diseases to immunology-driven disease areas. The Company’s growing presence in immunology is focused on five mid- to late-stage franchises with multi-disease potential, in areas including rheumatology (including systemic lupus erythematosus), dermatology, gastroenterology, and systemic eosinophilic-driven diseases. AstraZeneca’s ambition in Respiratory & Immunology is to achieve disease modification and durable remission for millions of patients worldwide.

About AstraZeneca

AstraZeneca is a global, science-led biopharmaceutical company that focuses on the discovery, development and commercialization of prescription medicines in Oncology, Rare Diseases and BioPharmaceuticals, including Cardiovascular, Renal & Metabolism, and Respiratory & Immunology. Based in Cambridge, UK, AstraZeneca operates in over 100 countries, and its innovative medicines are used by millions of patients worldwide. For more information, please visit www.astrazeneca-us.com and follow us on Twitter @AstraZenecaUS.

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