Tizona Announces Publication in Cancer Discovery Highlighting the Important Role of CD39 and Extracellular ATP in Inflammasome-driven Anti-Tumor Immunity

On November 7, 2019 Tizona Therapeutics, Inc., a clinical stage, privately held company developing first-in-class cancer immunotherapies, reported the online publication of an article in Cancer Discovery describing novel mechanisms to more potently modulate the adenosine pathway and activate anti-tumor immune responses using antibodies that block CD39 (Press release, Tizona Therapeutics, NOV 7, 2019, View Source [SID1234550672]).

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The paper, "Targeting CD39 in Cancer Reveals an Extracellular ATP and Inflammasome-driven Tumor Immunity", found that blocking CD39 enzymatic activity with an anti-CD39 antibody facilitated immune cell infiltration into T cell-poor tumors and rescued anti-PD-1 resistance. This activity was shown to be mediated by ATP’s signaling of the P2X7 receptor and consequent stimulation of the inflammasome. Stimulating inflammasome-driven anti-tumor immunity through the preservation of ATP coupled with preventing the production of immune suppressive adenosine is only achieved through targeting CD39.

TTX-030, a first-in-class anti-CD39 antibody discovered at Tizona, is currently being evaluated in collaboration with AbbVie in a Phase 1/1b clinical study as a monotherapy and in combination with an approved anti-PD-1 agent and standard chemotherapy in adults with advanced cancer (NCT03884556).

"Targeting CD39 is a promising approach to modulate the adenosine pathway within the tumor microenvironment to both stimulate the immune system and counter immune suppression," said Scott Clarke, CEO of Tizona. "This paper provides additional evidence that CD39 is a key immune regulatory switch in the TME, and we are excited to develop TTX-030, our first-in-class anti-CD39 antibody, with the potential to transform outcomes for people with cancer."

About TTX-030, the Adenosine Axis, and the Tumor Microenvironment

TTX-030 is a monoclonal antibody that inhibits the activity of CD39, a cell surface enzyme upregulated on tumors, exhausted T cells, as well as many suppressive cell types. It catalyzes the conversion of ATP to AMP, the first step in the generation of adenosine. By blocking the action of CD39, TTX-030 prevents the formation of immune suppressive extracellular adenosine, which would otherwise inhibit effector cells in the TME. In addition to preventing the formation of suppressive adenosine, TTX-030 also prevents the degradation of ATP, preserving ATP’s ability to stimulate dendritic and myeloid-derived cells responsible for innate immunity and the immune cell priming necessary for adaptive immunity.

Targos and Ultivue Partner to Incorporate Highly Standardized UltiMapper™ Tissue Multiplex Phenotypic Assays in Support of Clinical Research Services

On November 7, 2019 Targos Molecular Pathology GmbH, a market leader in clinical biomarker services reported a technology partnership with Ultivue, the innovation leader in multiplex tissue biomarker assays, to offer the biopharmaceutical industry new capabilities to improve the characterization of cancer patients’ samples selected for clinical research programs (Press release, Targos Molecular Pathology, NOV 7, 2019, View Source [SID1234550671]). UltiMapper multiplex immuno-histochemistry assays enable the precise identification of cellular phenotypes that can be associated to drug efficacy and further used to develop a companion diagnostic assay.

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"UltiMapper assays are very modular by design, allowing for various levels of multiplexing and throughput, and supporting same day staining-to-data workflows," stated Dr. Thomas Henkel, CEO of Targos. "The adoption of highly standardized multiplex tissue biomarker assays is a strategic fit with our mission to continuously improve the success of clinical trials and deliver exceptional value to our biopharma partners."

Ultivue technologies and UltiMapper assays are widely used in tumor immune-profiling research strategies by the biomedical community to demonstrate the clinical utility of panels of markers. "Through our collaboration with Targos, the same panels can seamlessly be used in their existing setup to create a very effective continuum of translational and clinical research," said Philippe Mourere, SVP Commercial Operations at Ultivue. "Targos also offers highly customizable UltiMapper panels that can be used in combination with the company’s broad menu of additional assays and end-to-end quality services."

Additional details on the partnership will be communicated at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) Annual Meeting at the Gaylord National Resort & Convention Center in National Harbor, MD on November 8 and 9, 2019 at the Ultivue booth #428.

Rationale for Expansion of AMV564 Into Solid Tumors

On November 7, 2019 Amphivena Therapeutics, Inc., a private clinical stage immuno-oncology company developing T cell engager therapeutics for cancer, reported that it will present at the Society for Immunotherapy in Cancer (SITC) (Free SITC Whitepaper) Annual Meeting on November 7 new understandings of the mechanism of action of its T cell engager clinical candidate, AMV564 (Press release, Amphivena Therapeutics, NOV 7, 2019, View Source [SID1234550670]). Specifically, Amphivena said that AMV564, a bivalent CD33/CD3 T cell engager, selectively depletes myeloid-derived suppressor cells (MDSC) in patients, sparing normal neutrophils and monocytes. The company announced in October initiation of a Phase 1 trial to evaluate the effect of AMV564 on these immune suppressive cells and the potential therapeutic benefit of relieving this important source of T cell suppression in patients with solid tumors.

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Vitoria Smith Ph.D., Chief Scientific Officer, who will make the oral presentation, noted, "AMV564 selectively reduces MDSC in the bone marrow and periphery in acute myeloid leukemia and myelodysplastic syndrome patients. In addition, we observed that T cell activation on therapy can lead to rapid increases in MDSC. However, this can be modulated by AMV564 due to avid binding of activated CD33 on MDSC. We believe that with application of a continuous dosing regimen we may control immune-suppressive MDSC and promote anti-tumor immunity."

The oral presentation (071) is scheduled for 2:25 pm ET in Potomac Ballroom CD.

Amphivena will also present a "Trials in Progress" poster summarizing the study design and objectives of its ongoing study AMV564-301 "Phase 1 Dose Escalation with Expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Efficacy of AMV564 in Patients with Advanced Solid Tumors" (NCT04128423). The multi-center Phase 1 study is currently open for enrollment at NEXT Oncology (PI: Raghad Karim) in San Antonio, TX, MD Anderson Cancer Center (PI: Sarina Piha-Paul) and Peninsula Cancer Institute (PI: Alexander Starodub) in Newport News, VA. AMV564 is being administered to solid tumor patients by subcutaneous injection.

The poster presentation (P416) is scheduled for 7:00 pm – 8:30 pm ET in Prince George’s Exhibition Hall AB.

About AMV564

AMV564 is a bivalent, bispecific (2:2) T cell engager that binds CD33 and CD3. To date, over 50 patients have received AMV564 in two Phase 1 clinical trials for acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS). It is currently being evaluated in a First-in-Human Phase 1 trial in patients with relapsed/refractory AML at Washington University School of Medicine, MD Anderson Cancer Center, New York-Presbyterian/Weill Cornell Medical Center and Weill Cornell Medicine, Fred Hutchinson Cancer Research Center, The Ohio State University Wexner Medical Center, University of Pennsylvania Medical Center, Northwestern Memorial Hospital, and The Johns Hopkins Hospital.

The safety, efficacy and selectivity of AMV564 was highlighted most recently at both the 24th European Hematology Association (EHA) (Free EHA Whitepaper) meeting in Amsterdam (Abstract S877) and at the 60th Annual Meeting of the American Society of Hematology (ASH) (Free ASH Whitepaper) in San Diego, CA last December. Amphivena believes that AMV564 has demonstrated novel clinical activity by rapidly and selectively eliminating leukemic blasts and rare immature, granulocytic and monocytic MDSCs while sparing normal CD33-expressing cells, including neutrophils and monocytes.

South Korean Company, Yuhan Pharmaceuticals Partners with Cyclica to Advance R&D Across Two Separate Programs for Oncology

On November 7, 2019 Renowned South Korean healthcare company, Yuhan Pharmaceuticals (Yuhan) and Cyclica Inc. (Cyclica), a leading neo biotechnology company reported a collaboration to apply Cyclica’s proprietary AI-integrated drug discovery platform in two separate R&D programs (Press release, YuHan, NOV 7, 2019, View Source [SID1234550669]). Yuhan is keen on implementing innovative technologies to enhance drug development efforts and will utilize Cyclica’s unique end-to-end AI-integrated drug discovery platform across diverse therapeutic areas to develop novel advanced lead-like molecules with desired chemical properties against the targets of interest determined by Yuhan’s R&D priorities.

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Yuhan will leverage Cyclica’s integrated drug discovery platform, Ligand DesignTM and Ligand Express to generate novel chemical entities with desired polypharmacological, physicochemical, and ADMET properties while providing insights into systems biology and structural pharmacogenomics.

Cyclica will receive an upfront payment as well as receive milestone payments upon the completion of specific objectives. Through this collaboration, Yuhan and Cyclica envision a long-term relationship to enhance future R&D and drug discovery efforts to identify novel solutions for unaddressed therapeutic needs.

Yuhan CEO and President Jung Hee Lee said, "We are very pleased to be collaborating with Cyclica to apply its proprietary AI-integrated drug discovery platform in our R&D programs, and hope to expand our partnership upon the success of the collaboration. Yuhan is dedicated to offering first-in-class to the patients within a short time by applying new computational methods, including AI and Big Data that can shorten the time and the cost required for drug development."

"It’s an honour to collaborate with Yuhan, a visionary company that is thinking deeply about the future of the discovery of better medicines, and the application of new computational methods, including machine and deep learning. I am confident that this collaboration, and the future relationship with Yuhan and Cyclica will benefit patients waiting for new and better medicines." said Naheed Kurji, President and CEO of Cyclica.

Phase 3 Trial of NINLAROTM (ixazomib) as First Line Maintenance Therapy Met Primary Endpoint in Multiple Myeloma Patients not treated with Stem Cell Transplantation

On November 7, 2019 Takeda Pharmaceutical Company Limited (TSE: 4502/NYSE: TAK) ("Takeda") reported the randomized, Phase 3 TOURMALINE-MM4 study met its primary endpoint of progression free survival (PFS) (Press release, Takeda, NOV 7, 2019, View Source [SID1234550668]). The trial evaluated the effect of single-agent oral NINLARO (ixazomib) as a first line maintenance therapy versus placebo in adult patients diagnosed with multiple myeloma not treated with stem cell transplantation. TOURMALINE-MM4 is the first industry sponsored Phase 3 trial to explore the concept of "switch" maintenance, the use of medicines not included in initial induction therapy, in this setting. NINLARO is currently not approved for this specific use.

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"We are very encouraged by the results of the TOURMALINE-MM4 trial and continue our forward momentum in developing maintenance options for multiple myeloma patients. Importantly, this is the third positive Phase 3 readout from the TOURMALINE clinical trial program," said Phil Rowlands, Ph.D., Head, Oncology Therapeutic Area Unit, Takeda. "We remain committed to bringing this convenient and well-tolerated treatment option to patients."

The safety profile of NINLARO in the maintenance setting was consistent with previously reported results of single-agent NINLARO use, and there were no new safety signals identified in TOURMALINE-MM4.

Full data results will be submitted for presentation at an upcoming medical meeting.

About the TOURMALINE-MM4 Trial

TOURMALINE-MM4 is a randomized, placebo-controlled, double-blind Phase 3 study of 706 patients, designed to determine the effect of single-agent oral NINLAROTM (ixazomib) maintenance therapy on progression-free survival (PFS), compared to placebo, in adult patients newly diagnosed with multiple myeloma not treated with stem cell transplantation, who have completed 6-12 months of initial therapy and achieved a partial response or better. For additional information, please visit View Source

About Multiple Myeloma

Multiple myeloma is a life-threatening rare blood cancer that arises from the plasma cells, a type of white blood cell that is made in the bone marrow. These plasma cells become abnormal, multiply and release a type of antibody known as a paraprotein, which causes symptoms of the disease, including bone pain, frequent or recurring infections and fatigue, a symptom of anemia. These malignant plasma cells have the potential to affect many bones in the body and can cause a number of serious health problems affecting the bones, immune system, kidneys and red blood cell count. The typical multiple myeloma disease course includes periods of symptomatic myeloma followed by periods of remission. Nearly 230,000 people around the world live with multiple myeloma, with approximately 114,000 new cases diagnosed globally each year.

About NINLAROTM (ixazomib) capsules

NINLARO (ixazomib) is an oral proteasome inhibitor which is being studied across the continuum of multiple myeloma treatment settings. NINLARO was first approved by the U.S. Food and Drug Administration (FDA) in November 2015 and is indicated in combination with lenalidomide and dexamethasone for the treatment of patients with multiple myeloma who have received at least one prior therapy. NINLARO is currently approved in more than 60 countries, including the United States, Japan and in the European Union, with more than 10 regulatory filings currently under review. It was the first oral proteasome inhibitor to enter Phase 3 clinical trials and to receive approval.

The comprehensive ixazomib clinical development program, TOURMALINE, includes several ongoing pivotal trials, which together are investigating major multiple myeloma patient populations:

TOURMALINE-MM1, investigating ixazomib vs. placebo in combination with lenalidomide and dexamethasone in relapsed and/or refractory multiple myeloma
TOURMALINE-MM2, investigating ixazomib vs. placebo in combination with lenalidomide and dexamethasone in patients with newly diagnosed multiple myeloma
TOURMALINE-MM3, investigating ixazomib vs. placebo as maintenance therapy in patients with newly diagnosed multiple myeloma following induction therapy and autologous stem cell transplant (ASCT)
TOURMALINE-MM4, investigating ixazomib vs. placebo as maintenance therapy in patients with newly diagnosed multiple myeloma who have not undergone ASCT
In addition to the TOURMALINE program, ixazomib is being evaluated in multiple therapeutic combinations for various patient populations in investigator initiated studies globally.

NINLAROTM (ixazomib) capsules: Global Important Safety Information

SPECIAL WARNINGS AND PRECAUTIONS
Thrombocytopenia has been reported with NINLARO (28% vs. 14% in the NINLARO and placebo regimens, respectively) with platelet nadirs typically occurring between Days 14-21 of each 28-day cycle and recovery to baseline by the start of the next cycle. It did not result in an increase in hemorrhagic events or platelet transfusions. Monitor platelet counts at least monthly during treatment with NINLARO and consider more frequent monitoring during the first three cycles. Manage with dose modifications and platelet transfusions as per standard medical guidelines.

Gastrointestinal toxicities have been reported in the NINLARO and placebo regimens respectively, such as diarrhea (42% vs. 36%), constipation (34% vs. 25%), nausea (26% vs. 21%), and vomiting (22% vs. 11%), occasionally requiring use of antiemetic and anti-diarrheal medications, and supportive care.

Peripheral neuropathy was reported with NINLARO (28% vs. 21% in the NINLARO and placebo regimens, respectively). The most commonly reported reaction was peripheral sensory neuropathy (19% and 14% in the NINLARO and placebo regimens, respectively). Peripheral motor neuropathy was not commonly reported in either regimen (< 1%). Monitor patients for symptoms of peripheral neuropathy and adjust dosing as needed.

Peripheral edema was reported with NINLARO (25% vs. 18% in the NINLARO and placebo regimens, respectively). Evaluate patients for underlying causes and provide supportive care, as necessary. Adjust the dose of dexamethasone per its prescribing information or the dose of NINLARO for severe symptoms.

Cutaneous reactions occurred in 19% of patients in the NINLARO regimen compared to 11% of patients in the placebo regimen. The most common type of rash reported in both regimens was maculo-papular and macular rash. Manage rash with supportive care, dose modification or discontinuation.

Hepatotoxicity, drug-induced liver injury, hepatocellular injury, hepatic steatosis, and hepatitis cholestatic have been uncommonly reported with NINLARO. Monitor hepatic enzymes regularly and adjust dose for Grade 3 or 4 symptoms.

Pregnancy- NINLARO can cause fetal harm. Advise male and female patients of reproductive potential to use contraceptive measures during treatment and for an additional 90 days after the final dose of NINLARO. Women of childbearing potential should avoid becoming pregnant while taking NINLARO due to potential hazard to the fetus. Women using hormonal contraceptives should use an additional barrier method of contraception.

Lactation- It is not known whether NINLARO or its metabolites are excreted in human milk. There could be potential adverse events in nursing infants and therefore breastfeeding should be discontinued.

SPECIAL PATIENT POPULATIONS
Hepatic Impairment: Reduce the NINLARO starting dose to 3 mg in patients with moderate or severe hepatic impairment.

Renal Impairment: Reduce the NINLARO starting dose to 3 mg in patients with severe renal impairment or end-stage renal disease (ESRD) requiring dialysis. NINLARO is not dialyzable and, therefore, can be administered without regard to the timing of dialysis.

DRUG INTERACTIONS
Co-administration of strong CYP3A inducers with NINLARO is not recommended.

ADVERSE REACTIONS
The most frequently reported adverse reactions (≥ 20%) in the NINLARO regimen, and greater than in the placebo regimen, were diarrhea (42% vs. 36%), constipation (34% vs. 25%), thrombocytopenia (28% vs. 14%), peripheral neuropathy (28% vs. 21%), nausea (26% vs. 21%), peripheral edema (25% vs. 18%), vomiting (22% vs. 11%), and back pain (21% vs. 16%). Serious adverse reactions reported in ≥ 2% of patients included thrombocytopenia (2%) and diarrhea (2%). For each adverse reaction, one or more of the three drugs was discontinued in ≤ 1% of patients in the NINLARO regimen.