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Aduro Biotech Announces Four Abstracts Accepted for Presentation at the 2018 Society for Immunotherapy of Cancer (SITC) Annual Meeting

October 1, 2018

BERKELEY, Calif., Oct. 01, 2018 (GLOBE NEWSWIRE) -- Aduro Biotech, Inc. (NASDAQ: ADRO) today announced that four separate abstracts from its research and development portfolio will be presented at the upcoming Society for Immunotherapy of Cancer (SITC) annual meeting in Washington, D.C. from November 7-11, 2018. Preliminary clinical data from the ongoing Phase 1 dose-finding study evaluating ADU-S100 (MIW815), an intratumoral STING agonist in patients with advanced solid tumors or lymphomas, were accepted for presentation on November 9, 2018.

“We look forward to sharing preliminary clinical data from the dose escalation portion of the monotherapy trial which provides an initial understanding of the potential role of ADU-S100 in the treatment of cancer and which contribute to the broader scientific understanding of the STING pathway,” said Stephen T. Isaacs, chairman, president and chief executive officer of Aduro Biotech. “In collaboration with our partner Novartis, our objective is to characterize the safety and mechanism of action of ADU-S100 across a wide array of solid tumors and lymphomas and provide a basis for continued development of ADU-S100 in combination with checkpoint inhibitors targeting PD-1 and CTLA-4.”

Researchers will present additional preclinical data for ADU-S100 in combination with immune checkpoint inhibitors. They will also present the results of early research to identify and characterize an anti-SIRPa antibody ADU-1805.

Details of the poster and oral presentations are as follows:

Abstract 10763: Phase I dose-finding study of MIW815 (ADU-S100), an intratumoral STING agonist, in patients with advanced solid tumors or lymphomas Date: November 9-10, 2018 Location: Poster Hall E, Walter E. Washington Convention Center Abstract 10938: ADU-S100 (MIW815) Synergizes with Checkpoint Inhibition to Elicit an Anti-Tumor CD8+ T Cell Response to Control Distal Tumors Date: November 9-10, 2018 Location: Poster Hall E, Walter E. Washington Convention Center Abstract 10923: SIRPα blockade increases the activity of multiple myeloid lineage cells, enhances dendritic cell cross-presentation, and aids in remodeling the tumor microenvironment Session: Rapid Oral Abstracts Date/Time: November 9, 2018, 1:00 – 2:00 p.m. ET Location: Poster Hall E, Walter E. Washington Convention Center Abstract 10960: Pan-allele anti-SIRPα antibodies that block the SIRPα–CD47 innate immune checkpoint Date: November 9-10, 2018 Location: Poster Hall E, Walter E. Washington Convention Center

About STING Pathway Activator PlatformThe Aduro-proprietary STING pathway activator product candidates, including ADU-S100 (MIW815), are synthetic small molecule immune modulators that are designed to target and activate human STING. STING is generally expressed at high levels in immune cells, including dendritic cells. Natural activation of STING is not always sufficient to prevent the growth and spread of cancer cells. In preclinical models, ADU-S100 directly activates STING to further amplify the natural anti-tumor response. Once activated, the STING receptor initiates a profound innate immune response through multiple pathways, inducing the expression of a broad profile of cytokines, including interferons and chemokines. This subsequently leads to the development of a systemic tumor antigen-specific T cell adaptive immune response.

Aduro’s lead molecule, ADU-S100, is the first therapeutic in development specifically targeting STING. In collaboration with Novartis, it is being tested in a Phase 1 clinical trial as a single agent and in combination with ipilimumab, and in a Phase 1b combination trial with spartalizumab (PDR001), an investigational anti-PD-1 compound. These studies are enrolling patients with cutaneously accessible, advanced/metastatic solid tumors or lymphomas. The trials are evaluating the ability of ADU-S100 to activate the immune system and recruit specialized immune cells to attack the injected tumor, leading to a broad immune response that seeks out and kills distant metastases.

About Aduro Aduro Biotech, Inc. is an immunotherapy company focused on the discovery, development and commercialization of therapies that are intended to transform the treatment of challenging diseases. Aduro’s technology platforms, which are designed to harness the body’s natural immune system, are being investigated in cancer indications and have the potential to expand into autoimmune and infectious diseases. Aduro’s STING pathway activator platform is designed to activate the STING receptor in immune cells, which may result in a potent tumor-specific immune response. ADU-S100 (MIW815) is the first STING pathway activator compound to enter the clinic and is currently being evaluated in a Phase 1 clinical trial as a single agent and in combination with ipilimumab and in a Phase 1b combination trial with spartalizumab (PDR001), an investigational anti-PD1 immune checkpoint inhibitor. Aduro’s B-select monoclonal antibody platform, including BION-1301, an anti-APRIL antibody, is comprised of a number of immune modulating assets in research and development. Aduro is collaborating with leading global pharmaceutical companies to expand its products and technologies. For more information, please visit www.aduro.com.

Cautionary Note on Forward-Looking Statements This press release contains forward-looking statements for purposes of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements regarding our intentions or current expectations concerning, among other things, the potential for ADU-S100 alone or in combination, the timing of clinical data, and our ability to advance our drug development programs on our own or with our collaborators. In some cases you can identify these statements by forward-looking words such as “may,” “will,” “continue,” “anticipate,” “intend,” “could,” “project,” “expect” or the negative or plural of these words or similar expressions. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that could cause actual results and events to differ materially from those anticipated, including, but not limited to, our history of net operating losses and uncertainty regarding our ability to achieve profitability, our ability to develop and commercialize our product candidates, our ability to use and expand our technology platforms to build a pipeline of product candidates, our ability to obtain and maintain regulatory approval of our product candidates, our ability to operate in a competitive industry and compete successfully against competitors that have greater resources than we do, our reliance on third parties, and our ability to obtain and adequately protect intellectual property rights for our product candidates. We discuss many of these risks in greater detail under the heading “Risk Factors” contained in our quarterly report on Form 10-Q for the quarter ended June 30, 2018, which is on file with the Securities and Exchange Commission. Forward-looking statements are not guarantees of future performance, and our actual results of operations, financial condition and liquidity, and the development of the industry in which we operate, may differ materially from the forward-looking statements contained in this press release. Any forward-looking statements that we make in this press release speak only as of the date of this press release. We assume no obligation to update our forward-looking statements whether as a result of new information, future events or otherwise, after the date of this press release.

Contact: Media Contact: Jennifer Lew Aljanae Reynolds Chief Financial Officer 510-809-2452 510-809-4816 press@aduro.com

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