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Corvus Hosting R&D Symposium on November 12 to Highlight COVID-19 Program and Updated Study Data Presented at SITC Annual Meeting

Data shows CPI-006 provided enhanced and prolonged polyclonal humoral immunity to SARS-CoV-2

Plans to initiate pivotal, randomized, double blind trial in December with results expected mid-2021

BURLINGAME, Calif., Nov. 11, 2020 (GLOBE NEWSWIRE) -- Corvus Pharmaceuticals, Inc. (NASDAQ: CRVS), a clinical-stage biopharmaceutical company, today announced that it is hosting an R&D Symposium on November 12, 2020 from 11:00 am - 1:00 pm ET (8:00 - 10:00 am PT) to highlight its COVID-19 program data, including updated data being presented this week in a poster presentation and an oral presentation at the 2020 Society for Immunotherapy of Cancer (SITC) Annual Meeting. The R&D Symposium will be hosted by Richard A. Miller, M.D., president and chief executive officer of Corvus, and other members of the Corvus team. The agenda includes the following guest speakers:

  • Tullia C. Bruno, PhD, Assistant Professor, Department of Immunology at UPMC Hillman Cancer Center. Dr. Bruno will provide an overview of B cell biology and antibodies.
  • Gerard J. Criner, M.D., Chair and Professor, lead investigator of the CPI-006 COVID-19 Phase 1 study, and Chair and Professor, Thoracic Medicine and Surgery at the Lewis Katz School of Medicine at Temple University. Dr. Criner will provide an overview of current COVID-19 therapies.

Members of the Corvus team will provide an overview of the preclinical biology and data on CPI-006, plans for the CPI-006 pivotal study for patients with COVID-19, and a general pipeline update covering the Company’s cancer programs. The speakers will be available for questions and answers during the program.

Corvus’ COVID-19 program includes its fully enrolled Phase 1 study investigating the potential for CPI-006 to provide a novel immunotherapy approach for hospitalized patients with COVID-19. This novel immunotherapy may provide a therapeutic benefit from the activation of a polyclonal antibody response to the SARS-CoV-2 virus and the induction of long term immunity through active immunization. Based on the study data to-date, the Company plans to initiate a pivotal, randomized, double blind study of CPI-006 in hospitalized COVID-19 patients in December with results expected around mid-2021.

Separate from the R&D Symposium, the updated data from the CPI-006 COVID-19 Phase 1 study is being presented in a poster presentation and separate oral presentation at SITC on Friday, November 13 at 12:15 pm ET as part of Session 301, which is titled “Hot Topic Symposium: COVID-19 and Cancer.” The oral presentation, entitled “Immunotherapy with B cell activating antibody CPI-006 in patients with mild to moderate COVID-19 stimulates anti-SARS-CoV-2 antibody response, memory B cells, and memory/effector T cells,” will be delivered by Dr. Criner. The SITC poster presentation is available on Corvus’ website on the COVID-19 page and the oral presentation slides will be available in the same location after the session concludes.

The data presented at SITC include results from 22 patients enrolled in the Phase 1 study utilizing a cut-off date of November 4, 2020. This includes enrollment in all four dosing cohorts of the study (0.3, 1.0, 3.0 and 5.0 mg/kg). All patients received a single dose of CPI-006 administered via a 5-10 minute intravenous (IV) infusion. The median age of the patients was 58 years (range 23-76 years). All of the patients had comorbidities that increased their COVID-19 risk including diabetes, coronary disease, hypertension, obesity, chronic kidney disease, chronic lung disease and/or cancer. 95% of patients were from minority populations that are at high risk of COVID-19 complications. The results from the study support the immune enhancing role of CPI-006 in COVID-19:

  • All patients had relatively low titers of anti-SARS-CoV-2 antibodies at the time of hospitalization despite having varying durations of prior COVID-19 symptoms from 1-21 days (median 5 days); all patients had a confirmed COVID-19 diagnosis by positive PCR nasal swab testing.
  • All evaluable patients had prompt anti-SARS-CoV-2 antibody responses within 7 days of administration of CPI-006 at all dose levels.
  • All patients recovered and were discharged from the hospital at a median of 4 (range 2-23) days.
  • As of the November 4, 2020 cut-off date, there were no drug-related toxicity or safety issues reported.

The results presented at SITC build on the initial data from the first two cohorts (0.3 mg and 1.0 mg doses) of the study that was published online at medRxiv.org in September 2020. In addition to detailing the initial results, the medRxiv manuscript provided additional details on the unique properties of CPI-006 and on the study rationale and design, along with context on the broad potential for CPI-006 for the treatment and prevention of COVID-19.

Background Information on CPI-006 for the Treatment of COVID-19
Corvus is studying an immunostimulatory humanized monoclonal antibody, designated as CPI-006, which the Company believes has demonstrated a potential new approach to immunotherapy of infectious diseases and cancer. In both in vitro and in vivo studies in cancer patients, CPI-006 has demonstrated binding to various immune cells and the inducement of a humoral adaptive immune response – B cell activation and lymphocyte trafficking leading to the production of antigen-specific immunoglobulin (IgM and IgG) antibodies. Administration of CPI-006 has also led to increased levels of memory B cells, and increased levels of both memory CD4+ and CD8+ cells, which are the cells responsible for long-term immunity. The similar production of antibodies and memory cells to pathogens such as SARS-CoV-2 may provide immediate and long-term clinical benefits for patients including shortened recovery time and improved long-term protective immunity.

To date, over 90 cancer patients have been treated with CPI-006 in the Corvus Phase 1/1b study, with dosing as high as 24 mg/kg every three weeks. The study design is evaluating CPI-006 monotherapy and in combination with ciforadenant and combination with pembrolizumab. Another cohort of the study is evaluating the triplet of CPI-006, ciforadenant and pembrolizumab. As of the November 4, 2020 cut-off date, CPI-006 had been well tolerated in these patients and evidence of B-cell activation and lymphocyte trafficking was observed in patients that received single doses as low as 1 mg/kg.   Corvus’ Phase 1/1b study demonstrated that the administration of CPI-006 was associated with increased memory B cells, the emergence of new B cell clones and, in some patients, the production of novel anti-tumor antibodies. These results have been previously reported in presentations at the Society of Immunotherapy of Cancer annual meeting in 2018 and 2019 and in a presentation at the American Society of Clinical Oncology annual meeting in 2019. CPI-006 was designed to bind to an epitope on an antigen known as CD73. This antigen is known to be involved in lymphocyte migration and activation. CPI-006 is designed to bind to a distinct region of CD73 and behaves as an agonist that serves as a signal to activate certain immune cells in preclinical studies. As previously reported, binding of CPI-006 affects B cells, T cells and antigen presenting cells. The collection of observed changes were consistent with enhanced antigen recognition and induction of an adaptive immune response.

R&D Symposium Conference Call, Webcast and Presentation Slides
The R&D Symposium conference call can be accessed by dialing 1-877-423-9813 (toll-free domestic) or 1-201-689-8573 (international) and using the conference ID 13712583. The live webcast, which will include presentation slides, may be accessed via the investor relations section of the Corvus website. A replay of the webcast will be available on Corvus' website for 90 days.

About Corvus Pharmaceuticals
Corvus Pharmaceuticals is a clinical-stage biopharmaceutical company. Corvus’ lead product candidates are ciforadenant (CPI-444), a small molecule inhibitor of the A2A receptor, and CPI-006, a humanized monoclonal antibody directed against CD73 that has exhibited immunomodulatory activity and activation of immune cells in preclinical studies. These product candidates are being studied in ongoing Phase 1b/2 and Phase 1/1b clinical trials in patients with a wide range of advanced solid tumors. Ciforadenant is being evaluated in a successive expansion cohort Phase 1b/2 trial examining its activity both as a single agent and in combination with an anti-PD-L1 antibody. CPI-006 is being evaluated in a multicenter Phase 1/1b clinical trial as a single agent, in combination with ciforadenant and pembrolizumab. The Company’s third cancer clinical program, CPI-818, is an investigational, oral, small molecule drug that selectively inhibited ITK in preclinical studies, is in a multicenter Phase 1/1b clinical trial in patients with several types of T-cell lymphomas. The Company is also evaluating CPI-006 as a treatment for COVID-19 patients. For more information, visit www.corvuspharma.com.

About CPI-006
CPI-006 is an investigational, potent humanized monoclonal antibody that is designed to react with a specific site on CD73. In preclinical studies, it has demonstrated immunomodulatory activity resulting in activation of lymphocytes, induction of antibody production from B cells and effects on lymphocyte trafficking. While there are other anti-CD73 antibodies in development for treatment of cancer, such antibodies have been reported to react with a different region of CD73 and are designed to block production of adenosine, which is not involved in the immunomodulatory processes seen with CPI-006.

About Ciforadenant
Ciforadenant (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. CD39 and CD73 are enzymes on the surface of tumor cells and immune cells. These enzymes work in concert to convert ATP to adenosine.

Adenosine Gene Signature
The adenosine gene signature is a biomarker that reflects adenosine induced immunosuppression in the tumor. These genes express chemokines that recruit myeloid cells including immunosuppressive tumor associated CD68+ myeloid cells, which are thought to mediate resistance to anti-PD-(L)1 treatment.

Forward-Looking Statements
This press release contains forward-looking statements, including statements related to the potential safety and efficacy of ciforadenant, CPI-006, and CPI-818, the Company’s ability to develop and advance product candidates into and successfully complete preclinical studies and clinical trials, including the Company’s Phase 1/1b clinical trial of CPI-006 for certain cancers, as well as the Company’s Phase 1 trial of CPI-006 for COVID-19, the timing of the availability and announcement of clinical data and certain other product development milestones, and the sufficiency of the Company’s cash resources. 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 quarter ended September 30, 2020, filed with the Securities and Exchange Commission on October 29, 2020, 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-006 and CPI-818; 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 may not be predictive of future results; the unpredictability of the regulatory process; regulatory developments in the United States, and other foreign countries; whether the FDA accepts data from trials conducted in foreign locations; the costs of clinical trials may exceed expectations; the Company’s ability to raise additional capital; the effects of COVID-19 on the Company’s clinical programs and business operations. 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 Lea
Chief Financial Officer
Corvus Pharmaceuticals, Inc.
+1-650-900-4522
llea@corvuspharma.com

MEDIA CONTACT:
Sheryl Seapy
W2O pure
+1-949-903-4750
sseapy@purecommunications.com

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