AstraZeneca and Heptares Therapeutics enter agreement to develop novel immuno-oncology treatments

AstraZeneca and Heptares Therapeutics, the wholly-owned subsidiary of Sosei Group Corporation, today announced that they have entered into a licensing agreement under which AstraZeneca will acquire exclusive global rights to develop, manufacture and commercialise the adenosine A_2A receptor antagonist, HTL-1071, a small molecule immuno-oncology candidate,andpotential additional A_2A receptor-blocking compounds. AstraZeneca will explore the assets across a range of cancers, including in combination with its existing portfolio of immunotherapies.

Tumour cells have developed mechanisms to evade the immune system, including through the production of a natural molecule called adenosine. By stimulating A_2A receptors, adenosine stops T-cells within the immune system from proliferating and reduces their ability to destroy cancer cells. Blocking A_2A receptors can therefore promote the anti-cancer response of T-cells within in the tumour microenvironment.

Under the terms of the agreement, Heptares will grant AstraZeneca an exclusive license to research, develop, manufacture and commercialise HTL-1071. The companies will also collaborate to discover further A_2A receptor-blocking compounds for development in cancer immunotherapy.

Heptares will receive an upfront payment of $10 million and is eligible to receive additional, significant near term milestone payments based on agreed pre-clinical and/or clinical events. Subject to successful completion of development and commercialisation milestones, Heptares is also eligible to receive more than $500 million, as well as up to double-digit tiered royalties on net sales.

Susan Galbraith, Vice President, Head of Oncology in AstraZeneca’s Innovative Medicines and Early Development Unit, said: “We are pleased to expand our successful collaboration with Heptares into the exciting area of immuno-oncology. By combining the pioneering A_2A receptor programme with the strength of AstraZeneca’s oncology portfolio, we hope to develop novel treatments with the potential to transform the lives of patients.”

Malcolm Weir, Chief Executive Officer of Heptares, said: “The A_2A receptor programme at Heptares has been an outstanding example of our Structure Based Drug Design approach in action, resulting in a novel clinical candidate, HTL-1071, with a highly attractive profile. Heptares is targeting G-protein-coupled receptors that play a key role in cancer biology through the identification of both antibody and small molecule therapeutics.We are delighted to be entering this expanding field by partnering with AstraZeneca, an innovative leader in the field of cancer immunotherapy. This agreement further builds on our successful existing research collaboration.”

The transaction is subject to customary clearances under the Hart-Scott-Rodino Antitrust Improvements Act.

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NOTES TO EDITORS

About Heptares Therapeutics

Heptares is a clinical-stage company creating transformative medicines targeting G protein-coupled receptors (GPCRs), a superfamily of 375 receptors linked to a wide range of human diseases. Heptares’ proprietary structure-based drug design technology enables us to engineer drugs for highly validated, yet historically undruggable or challenging, GPCRs. Using this approach, we have built an exciting pipeline of new medicines with the potential to transform the treatment of Alzheimer’s disease, schizophrenia ADHD, migraine, addiction, metabolic disease,and other indications. Our pharmaceutical partners include AstraZeneca, MedImmune, Cubist, MorphoSys and Takeda. Heptares is a wholly owned subsidiary of Sosei Group Corporation. For more information, please visit www.heptares.com and www.sosei.com.

About AstraZeneca in Oncology

Oncology is a therapeutic area in which AstraZeneca has a deep-rooted heritage. It will be potentially transformational for the company’s future, becoming the sixth growth platform. Our vision is to help patients by redefining the cancer treatment paradigm and one day eliminate cancer as a cause of death. By 2020, we are aiming to bring six new cancer medicines to patients.

Our broad pipeline of next-generation medicines is focused on four main disease areas - ovarian, lung, breast and haematological cancers. These are being targeted through four key platforms – immuno-oncology, the genetic drivers of cancer and resistance, DNA damage repair and antibody drug conjugates.

About AstraZeneca

AstraZeneca is a global, innovation-driven biopharmaceutical business that focuses on the discovery, development and commercialisation of prescription medicines, primarily for the treatment of cardiovascular, metabolic, respiratory, inflammation, autoimmune, oncology, infection and neuroscience diseases. AstraZeneca operates in over 100 countries and its innovative medicines are used by millions of patients worldwide. For more information please visit: www.astrazeneca.com.

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Key: RIA - Respiratory, Inflammation and Autoimmunity, CVMD - Cardiovascular and Metabolic Disease, ING - Infection, Neuroscience and Gastrointestinal