STAT4

Preclinical data highlights ciforadenant’s mechanism of action and synergy with immune checkpoint inhibitors Enrollment continues in Phase 1b/2 clinical trial evaluating ciforadenant as a potential first line therapy for metastatic RCC in combination with anti-CTLA-4 and anti-PD-1 therapies BURLINGAME, Calif., June 29, 2023 (GLOBE NEWSWIRE) -- Corvus Pharmaceuticals, Inc. (Nasdaq: CRVS), a clinical-stage biopharmaceutical company, today announced new preclinical data for ciforadenant, the Company’s adenosine 2A receptor inhibitor, highlighting its mechanism of action and synergy with immune checkpoint inhibitors via combination with anti-CTLA-4 and anti-PD-1 therapies. The data is being presented in a poster at the 2nd Japanese Cancer Association and American Association for Cancer Research (JCA-AACR) Precision Cancer Medicine International Conference, which is taking place June 28-30, 2023 in Kyoto, Japan. “Our presentation at the JCA-AACR conference further supports the rationale for the synergistic combination of ciforadenant with checkpoint inhibitors to leverage multiple components of the immune response to cancer,” said Richard A. Miller, M.D., co-founder, president and chief executive officer of Corvus. “We are exploring this combination in a Phase 1b/2 clinical trial that is being led by the Kidney Cancer Research Consortium. The clinical trial is exploring the potential of ciforadenant as a first line therapy for metastatic renal cell cancer in combination with anti-CTLA-4 and anti-PD-1 therapies, and is based on preclinical research published in 2018 demonstrating synergy when ciforadenant was combined with anti-CTLA-4 and anti-PD-1 therapies1. Enrollment in the clinical trial is ongoing and we plan to share initial data before the end of 2023.” Ciforadenant Data Presented at JCA-AACR ConferenceThe new ciforadenant preclinical data was presented by Dan Li, Ph.D., Senior Scientist at Corvus, in a poster session (abstract #12-1) today at the JCA-AACR conference. The poster is available to JCA-AACR attendees in the poster session and is also available on the Publications and Presentations page of the Corvus website. The poster presentation highlights preclinical data supporting the synergy between ciforadenant and immune checkpoint blockade (ICB), leading to a proinflammatory response: Depletion of myeloid cells abolished the synergy of ciforadenant and ICB in a murine melanoma model.The combination of ciforadenant with ICB upregulated the genes involved in the IL-12/STAT4 signaling axis, which leads to the development of CXCR3+ IFNγ-producing Th1 helper cells.Ciforadenant treatment increased production of chemokine CXCL10, a ligand for recruitment of CXCR3+ Th1 helper cells into the tumor.Ciforadenant modulated antitumor responses by turning the tumor microenvironment into the proinflammatory state.The combination of ciforadenant with ICB promoted the production of several proinflammatory cytokines such as IL-6, TNFa, and IFNg. About Corvus PharmaceuticalsCorvus Pharmaceuticals is a clinical-stage biopharmaceutical company pioneering the development of ITK inhibition as a new approach to immunotherapy for a broad range of cancer and immune diseases. The Company’s lead product candidate is CPI-818, an investigational, oral, small molecule drug that selectively inhibits ITK and is in a mid-stage clinical trial for patients with T cell lymphoma. Its other clinical-stage candidates are being developed for a variety of cancer indications. For more information, visit www.corvuspharma.com. About CiforadenantCiforadenant (CPI-444) is an investigational small molecule, oral, checkpoint inhibitor designed to disable a tumor’s ability to subvert attack by the immune system by blocking the binding of adenosine in the tumor microenvironment to the A2A receptor. Adenosine, a metabolite of ATP (adenosine tri-phosphate), is produced within the tumor microenvironment where it may bind to the adenosine A2A receptor present on immune cells and block their activity. Forward-Looking StatementsThis press release contains forward-looking statements, including statements related to the potential safety and efficacy of the Company’s product candidates including ciforadenant; the potential synergy between ciforadenant and immune checkpoint blockade; the Company’s ability and its partners’ ability, as well as the timing thereof, to develop and advance product candidates into and successfully complete preclinical studies and clinical trials, including the Phase 1b/2 clinical trial of ciforadenant; and the timing of the availability and announcement of clinical data and certain other product development milestones including the initial release of data for the Phase 1b/2 clinical trial for ciforadenant. All statements other than statements of historical fact contained in this press release are forward-looking statements. These statements often include words such as “believe,” “expect,” “anticipate,” “intend,” “plan,” “estimate,” “seek,” “will,” “may” or similar expressions. Forward-looking statements are subject to a number of risks and uncertainties, many of which involve factors or circumstances that are beyond the Company’s control. The Company’s actual results could differ materially from those stated or implied in forward-looking statements due to a number of factors, including but not limited to, risks detailed in the Company’s Quarterly Report on Form 10-Q for the three months ended March 31, 2023, filed with the Securities and Exchange Commission on May 8, 2023, as well as other documents that may be filed by the Company from time to time with the Securities and Exchange Commission. In particular, the following factors, among others, could cause results to differ materially from those expressed or implied by such forward-looking statements: the Company’s ability to demonstrate sufficient evidence of efficacy and safety in its clinical trials of ciforadenant, CPI-818 and its other product candidates; the accuracy of the Company’s estimates relating to its ability to initiate and/or complete preclinical studies and clinical trials; the results of preclinical studies and interim data from clinical trials not being predictive of future results; the unpredictability of the regulatory process; regulatory developments in the United States, and other foreign countries; the costs of clinical trials may exceed expectations; and the Company’s ability to raise additional capital. Although the Company believes that the expectations reflected in the forward-looking statements are reasonable, it cannot guarantee that the events and circumstances reflected in the forward-looking statements will be achieved or occur, and the timing of events and circumstances and actual results could differ materially from those projected in the forward-looking statements. Accordingly, you should not place undue reliance on these forward-looking statements. All such statements speak only as of the date made, and the Company undertakes no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise. INVESTOR CONTACT:Leiv LeaChief Financial OfficerCorvus Pharmaceuticals, Inc.+1-650-900-4522llea@corvuspharma.com MEDIA CONTACT:Sheryl SeapyReal Chemistry+1-949-903-4750sseapy@realchemistry.com 1Cancer Immunol Research 6:1136, 2018

May 31, 2023 -- Researchers at the National Institutes of Health and their colleagues have identified genomic variants that cause a rare and severe inflammatory skin disorder, known as disabling pansclerotic morphea, and have found a potential treatment. Scientists discovered that people with the disorder have an overactive version of a protein called STAT4, which regulates inflammation and wound healing. The work also identified a drug that targets an important feedback loop controlled by the STAT4 protein and significantly improves symptoms in these patients. The results were published in the New England Journal of Medicine . The study was led by researchers at the National Human Genome Research Institute (NHGRI), part of NIH, in collaboration with researchers from the University of California, San Diego (UCSD) and the University of Pittsburgh. Researchers from the National Institute of Arthritis and Musculoskeletal and Skin Diseases and the National Institute of Allergy and Infectious Diseases, both part of NIH, also participated in the study. Only a handful of patients have been diagnosed with disabling pansclerotic morphea, a disorder first described in the medical literature around 100 years ago. The disorder causes severe skin lesions and poor wound healing, leading to deep scarring of all layers of the skin and muscles. The muscles eventually harden and break down while the joints stiffen, leading to reduced mobility. Because the disorder is so rare, its genetic cause had not been identified until now. “Researchers previously thought that this disorder was caused by the immune system attacking the skin,” said Sarah Blackstone, a predoctoral fellow within NHGRI's Inflammatory Disease Section, a medical student at the University of South Dakota and co-first author of the study. “However, we found that this is an oversimplification, and that both skin and the immune system play an active role in disabling pansclerotic morphea.” The researchers used genome sequencing to study four individuals with disabling pansclerotic morphea and found that all four have genomic variants in the STAT4 gene. The STAT4 gene encodes a type of protein that helps turn genes on and off, known as a transcription factor. The STAT4 protein not only plays a role in fighting infections but also controls important aspects of wound-healing in the skin. The scientists found that the STAT4 genomic variants result in an overactive STAT4 protein in these four patients, creating a positive feedback loop of inflammation and impaired wound-healing that worsens over time. To stop this harmful feedback loop, they targeted another protein in the inflammatory pathway that interacts with the STAT4 molecule and is called Janus kinase, also known as JAK. When the researchers treated the patients with a JAK-inhibiting drug called ruxolitinib, the patients’ rashes and ulcers dramatically improved. “So far, there has not been a standard treatment for this disorder because it’s so rare and not well-understood. However, our study gives an important new treatment option for these patients,” said Blackstone. Existing treatments for disabling pansclerotic morphea are designed to halt the progression of the disorder, but previous therapies have been mostly ineffective, often with severe side effects. People with the disorder typically don’t live more than 10 years after their diagnosis. The study suggests that ruxolitinib could be an effective treatment for patients with this disorder. Ruxolitinib is part of a broader class of drugs called JAK inhibitors, which are commonly used to treat arthritis, eczema, ulcerative colitis and other chronic inflammatory diseases. “The findings of this study open doors for JAK inhibitors to be a potential treatment for other inflammatory skin disorders or disorders related to tissue scarring, whether it is scarring of the lungs, liver or bone marrow,” said Dan Kastner, M.D., Ph.D., an NIH distinguished investigator, head of NHGRI’s Inflammatory Disease Section and a senior author of the paper. “We hope to continue studying other molecules in this pathway and how they are altered in patients with disabling pansclerotic morphea and related conditions to find clues to understanding a broader array of more common diseases,” said Lori Broderick, M.D., Ph.D., a senior author of the paper and an associate professor at UCSD. The National Human Genome Research Institute (NHGRI) is one of the 27 institutes and centers at the NIH, an agency of the Department of Health and Human Services. The NHGRI Division of Intramural Research develops and implements technology to understand, diagnose and treat genomic and genetic diseases. Additional information about NHGRI can be found at: https://www.genome.gov. About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov . NIH…Turning Discovery Into Health ® References Baghdassarian et al (2023). Variant STAT4 and Response to Ruxolitinib in an Autoinflammatory Syndrome. New England Journal of Medicine. DOI: 10.1056/NEJMoa2202318 Source: NIH Posted: May 2023