On June 11, 2015 BIND Therapeutics and Macrophage Therapeutics, a subsidiary of Navidea Biopharmaceuticals reported they have entered into a research collaboration to engineer Accurins with the Manocept targeting platform that enables selective, efficient binding to CD206 positive disease-associated macrophages (Press release, BIND Therapeutics, JUN 11, 2015, View Source [SID:1234505392]). Upon achievement of proof-of-concept, the companies anticipate expanding the collaboration to develop Manocept-linked Accurins as a novel, potent approach to impact the tumor microenvironment which, in many forms of cancer, is a barrier to immune effector cells. Schedule your 30 min Free 1stOncology Demo! "This collaboration represents a potentially significant advance in the evolution of our platform as we develop Accurins with novel targeting ligands," said Andrew Hirsch, president and chief executive officer of BIND Therapeutics. "The modular nature of our platform offers multiple therapeutic possibilities, and our collaboration with Macrophage Therapeutics may enable the development of Accurins that target activated macrophages, which in cancer, help create an immunosuppressive microenvironment. We believe the clinically validated Manocept platform, with its unique ability to seek out activated macrophages, fits into our vision to engineer Accurins that have a profound impact on the treatment of diseases, including our current focus in cancer."
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Disease-associated macrophages generally play a pro-tumoral role and are immunosuppressive, preventing the immune system from mounting an attack on tumor cells. Based on the expression of CD206 mannose receptors on disease-associated macrophages, BIND and Macrophage plan to conduct joint research to develop a CD206 targeted Accurin nanoparticle that is capable of concentrating various therapeutic payloads to the tumor microenvironment.
"We are pleased to work with BIND Therapeutics to explore the therapeutic potential of our two complementary technology platforms," said Michael M. Goldberg, M.D., CEO of Macrophage Therapeutics and Director of Navidea. "The Manocept platform is the basis for the FDA-approved CD206 targeted sentinel lymph node detection agent, Lymphoseek (technetium Tc 99m tilmanocept) injection. Coupled with BIND’s specifically engineered Accurins that concentrate therapeutic payloads to extracellular and intracellular compartments, with a tunable controlled-release profile, we are optimistic that we can create a wide range of therapeutic applications."
"It is well-established that macrophages play an important role in many disease states but it has proven difficult to selectively target and alter macrophages that play a key role in disease progression," said Hagop Youssoufian, M.Sc., M.D., chief medical officer at BIND Therapeutics. "By coupling Accurins with Macrophage’s well-credentialed CD206 targeting ligand, we may be able to treat macrophage-mediated diseases through increased uptake, and concentration, of targeted therapeutic payloads in the tumor microenvironment. BIND’s Medicinal Nanoengineering platform is able to combine multiple molecular components into a targeted, long-circulating Accurin. An Accurin nanoparticle that binds to CD206 positive macrophages could be a valuable asset in the armament against multiple cancers and disease states."
"The collaboration furthers our vision to develop therapeutic applications of the Manocept platform through strategic partnerships," said Rick Gonzalez, president and CEO of Navidea. "In collaborating with BIND, we will be able to leverage their accomplished R&D team who has strong track record for advancing targeted nanoparticles from concept into the clinic."
About Accurins
Accurins, a new class of targeted therapeutics developed using BIND’s Medicinal Nanoengineering platform, are nanoparticles engineered to have a profound impact on the treatment of disease. The elegant and novel design of Accurins allow for prolonged circulation, controlled and tunable release and selective targeting of a therapeutic payload to diseased tissue or cells while avoiding immune surveillance detection and systemic toxicities.
Accurins can be engineered for multiple therapeutic applications and have the potential to integrate numerous payloads, including highly potent drugs with mechanism-based toxicities that limit therapeutic benefit, DNA, RNA, proteins and immunotherapy agents. This attribute enables Accurins to target multiple diseases, including cancer, inflammatory, vascular, and infectious disease.
About Manocept CD206 Targeting Platform for Therapeutics Development
Manocept CD206 Targeting Platform is a proprietary mannose-containing, receptor-directed technology platform designed to engineer novel, synthetic receptor targeted imaging agents and therapeutics for cancer and other diseases. Manocept’s unique structural and molecular properties enable the design of novel immuno-constructs that selectively target and bind to CD206 (mannose receptor) and other C-type Lectins found on activated, disease-associated macrophages and tumor associated macrophages (TAMs). The Manocept CD206 Targeting Platform provides a novel and valuable approach to the design of drug molecules targeting CD206 disease-associated macrophages for therapeutic purposes.
About Lymphoseek
Lymphoseek (technetium Tc 99m tilmanocept) injection is the first and only FDA-approved receptor-targeted lymphatic mapping agent. It is a novel, receptor-targeted, small-molecule radiopharmaceutical used in the evaluation of lymphatic basins that may have cancer involvement in patients. Lymphoseek is designed for the precise identification of lymph nodes that drain from a primary tumor, which have the highest probability of harboring cancer. Lymphoseek is approved by the U.S. Food and Drug Administration (FDA) for use in solid tumor cancers where lymphatic mapping is a component of surgical management and for guiding sentinel lymph node biopsy in patients with clinically node negative breast cancer, melanoma or squamous cell carcinoma of the oral cavity. Lymphoseek has also received European approval in imaging and intraoperative detection of sentinel lymph nodes in patients with melanoma, breast cancer or localized squamous cell carcinoma of the oral cavity.
Accurate diagnostic evaluation of cancer is critical, as it guides therapy decisions and determines patient prognosis and risk of recurrence. Overall in the U.S., solid tumor cancers may represent up to 1.2 million cases per year. The sentinel node label in the U.S. and Europe may address approximately 235,000 new cases of breast cancer, 76,000 new cases of melanoma and 45,000 new cases of head and neck/oral cancer in the U.S., and approximately 367,000 new cases of breast cancer, 83,000 new cases of melanoma and 55,000 new cases of head and neck/oral cancer diagnosed in Europe annually.
Lymphoseek Indication and Important Safety Information
Lymphoseek is a radioactive diagnostic agent indicated with or without scintigraphic imaging for:
Lymphatic mapping using a handheld gamma counter to locate lymph nodes draining a primary tumor site in patients with solid tumors for which this procedure is a component of intraoperative management.
Guiding sentinel lymph node biopsy using a handheld gamma counter in patients with clinically node negative squamous cell carcinoma of the oral cavity, breast cancer or melanoma.
Important Safety Information
In clinical trials with Lymphoseek, no serious hypersensitivity reactions were reported, however Lymphoseek may pose a risk of such reactions due to its chemical similarity to dextran. Serious hypersensitivity reactions have been associated with dextran and modified forms of dextran (such as iron dextran drugs).
Prior to the administration of Lymphoseek, patients should be asked about previous hypersensitivity reactions to drugs, in particular dextran and modified forms of dextran. Resuscitation equipment and trained personnel should be available at the time of Lymphoseek administration, and patients observed for signs or symptoms of hypersensitivity following injection.
Any radiation-emitting product may increase the risk for cancer. Adhere to dose recommendations and ensure safe handling to minimize the risk for excessive radiation exposure to patients or health care workers.
In clinical trials, no patients experienced serious adverse reactions and the most common adverse reactions were injection site irritation and/or pain ( < 1%).
Year: 2015
Intrexon and Oragenics Expand Collaboration to Pursue Development of Biotherapeutics for the Oral Cavity
On June 10, 2015 Intrexon Corporation (NYSE: XON), a leader in synthetic biology, and Oragenics (NYSE:MKT – OGEN) reported a new Exclusive Channel Collaboration (ECC) to pursue development of biotherapeutics for oral mucositis (OM) and other diseases and conditions of the oral cavity, throat, and esophagus, including clinical advancement of the ActoBiotic AG013 for the treatment of OM (Press release, Intrexon, JUN 10, 2015, View Source [SID:1234514823]). OM results in the painful inflammation and ulceration of the membranes lining the oral cavity, throat, and esophagus and is among the most frequently reported adverse events associated with cancer therapy affecting up to 500,000 patients annually. At present there is no drug approved to prevent the condition broadly and therapies are primarily palliative, alleviating symptoms without addressing the underlying pathology, resulting in a significant unmet medical need.
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"We are eager to advance therapeutic programs through the established clinical foundations of the ActoBiotics platform, and moving forward in the clinic with AG013 is a natural fit for our focus on the treatment of oral cavity diseases with innovative biopharmaceuticals," said Frederick Telling, Ph.D., Chairman of the Board of Oragenics. "Work continues under our current collaboration with Intrexon centered on the development of a novel class of antibiotics known as lantibiotics, and we are excited to build on this relationship in the field of oral health to realize the promise of microbial approaches in the generation of efficacious new medicines."
"I am pleased that this new collaboration provides an opportunity for continued development of AG013 as an intervention for oral mucositis," said Stephen T. Sonis, DMD, DMSc, Senior Surgeon, Divisions of Oral Medicine, Brigham and Women’s Hospital and the Dana-Farber Cancer Institute. "AG013’s successful attenuation of chemotherapy-induced oral mucositis in the Phase 1B trial suggests that this innovative delivery platform may offer a new approach to the treatment of this important unmet clinical need."
Through the molecular engineering of food-grade microbes (Lactococcus lactis), biologically-contained ActoBiotics allow for in situ expression and secretion of novel biotherapeutic proteins and peptides. AG013 is formulated as a convenient oral rinsing solution and designed to deliver the therapeutic molecule Trefoil Factor 1 (TFF1) to the mucosal tissues in the oral cavity. TFFs are a class of peptides that are involved in protection of the gastrointestinal tissues against mucosal damage and have an important role in subsequent repair.
A phase 1B clinical trial with AG013 in 25 cancer patients with OM across 5 cancer referral centers showed that AG013 was safe and well tolerated. Data published in the journal Cancer showed a 35% reduction of the duration of ulcerative OM in the AG013-treated patients versus the placebo-treated patients. Furthermore, close to 30% of the patients treated with AG013 were full responders while all placebo-treated patients developed ulcerative OM. Additionally, a phase 1 pharmacokinetic (PK) study in 10 healthy volunteers showed that live AG013 bacteria adhere to the buccal mucosa and actively secrete protein locally, resulting in homogeneous exposure to the entire mucosal surface up to 24 hours after administration of a rinse. AG013 has already been granted Orphan Drug status in the European Union and has potential eligibility for Biologic License Application exclusivity as well as Fast Track designation with the United States Food and Drug Administration.
Under the terms of the agreement, Oragenics will have access to Intrexon’s technologies and expertise to develop products for the treatment of oral mucositis or products containing genetically modified Lactococcus lactis expressing trefoil factors in the oral cavity, throat, and esophagus for a technology access fee and will reimburse Intrexon for the research and development costs. The agreement also provides for commercial and regulatory milestone payments to Intrexon, as well as a low double-digit percentage royalty based on the net sales from collaboration products.
"AG013 represents a promising product from a truly innovative platform for the prevention of oral mucositis in cancer patients," commented Gregory Frost, Ph.D., Senior Vice President and Head of Intrexon’s Health Sector. "We are very pleased with the expanded collaboration with Oragenics, especially given their unique experience in the field of oral health using novel approaches. This ECC will further the clinical development of AG013 in the hope of providing cancer patients with a much needed adjunctive therapy for oral mucositis, a challenging side effect that can become a treatment-limiting toxicity for effective cancer therapy."
CTI BioPharma And Baxter Announce Patient-Reported Outcomes (PROs) From Pacritinib Phase 3 In Patients With Myelofibrosis To Be Presented In Late-Breaking Session At EHA
On June 10, 2015 CTI BioPharma and Baxter International reported that Patient Reported Outcomes (PROs) data from the Phase 3 PERSIST-1 trial, evaluating pacritinib in patients with myelofibrosis, will be highlighted in a late-breaking oral presentation at the upcoming 20th Congress of the European Hematology Association (EHA) (Free EHA Whitepaper), June 11-14, Vienna (Press release, CTI BioPharma, JUN 10, 2015, View Source;p=RssLanding&cat=news&id=2057957 [SID:1234505406]). Pacritinib is an investigational oral multikinase inhibitor with specificity for JAK2 and FLT3. These data were also selected for inclusion in the official EHA (Free EHA Whitepaper) Press Briefing on Friday, June 12, 2015 at 08:30 CEST.
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Myelofibrosis is associated with significantly reduced quality of life and shortened survival. As the disease progresses, the body slows production of important blood cells and within one year of diagnosis the incidence of disease-related thrombocytopenia (very low blood platelet counts), severe anemia, and red blood cell transfusion requirements increase significantly. Among other complications, most patients with myelofibrosis present with enlarged spleens (splenomegaly) as well as many other potentially devastating physical symptoms such as: abdominal discomfort, bone pain, feeling full after eating little, severe itching, night sweats, and tiredness.
Full details for the abstracts involving pacritinib in this year’s EHA (Free EHA Whitepaper) program are below:
Title: Patient-Reported Outcomes (PROS) in PERSIST-1: A Randomized, Multi-Country Phase III Trial of the JAK2 Inhibitor Pacritinib (PAC) VS. Best Available Therapy (BAT) in Myelofibrosis (MF)
First Author: Ruben Mesa, M.D., Deputy Director, Mayo Clinic Cancer Center, Chair of the Division of Hematology & Medical Oncology, Mayo Clinic Cancer Center, Scottsdale, AZ and one of the principal investigators for PERSIST-1
Date/Time: Sunday, June 14 at 12:15 CEST
Location: Room A7
Presentation Type: Oral Presentation
Abstract #: LB2072
This abstract is under a press embargo until Friday, June 12 at 09:30 CEST.
Title: PERSIST-1: A Phase III Study of Pacritinib (PAC) vs Best Available Therapy (BAT) in Primary Myelofibrosis (PMF), Post-Polycythemia Vera MF (PPV-MF) or Post-Essential Thrombocythemia MF (PET-MF)
First Author: Claire Harrison, M.D., Consultant Hematologist, Guy’s and St. Thomas’ NHS Foundation Trust, Guy’s Hospital, London, United Kingdom and one of the principal investigators for PERSIST-1
Date/Time: Friday, June 12 at 17:15 to 18:45 CEST
Location: Poster area (Hall C)
Presentation Type: Poster
Abstract #: LB314
The full abstract can be viewed here.
About Pacritinib
Pacritinib is an oral multikinase inhibitor with specificity for JAK2 and FLT3. The JAK family of enzymes is a central component in signal transduction pathways, which are critical to normal blood cell growth and development, as well as inflammatory cytokine expression and immune responses. Mutations in these kinases have been shown to be directly related to the development of a variety of blood-related cancers, including myeloproliferative neoplasms, leukemia, and lymphoma. The kinase profile of pacritinib suggests its potential therapeutic utility in conditions such as acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), chronic myelomonocytic leukemia (CMML), and chronic lymphocytic leukemia (CLL) due to its potent inhibition of c-fms, IRAK1, JAK2, and FLT3.1
Cellectis Announces Promising Study on Next Generation Engineered Allogeneic CAR T-cells
On June 10, 2015 Cellectis reported the publication of a study in Molecular Therapy, a Nature Publishing Group Journal, describing the development of the next generation of engineered CAR T-cells compatible with allogeneic adoptive transfer immunotherapy (Press release, Cellectis, JUN 10, 2015, View Source [SID:1234505394]).
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Study Highlights
• The adoptive transfer of allogeneic CAR T-cells represents a promising strategy to fight multiple cancers worldwide.
• Cellectis has streamlined an engineering process to generate CAR T-cells that could be compatible with allogeneic adoptive transfer in combination with nucleoside analogues lymphodepleting drugs.
When allogeneic CAR T-cell infusion is considered, host versus graft and graft versus host reactions must be avoided to prevent rejection of adoptively transferred cells, host tissue damages and to elicit significant antitumoral outcome. In this report, Julien Valton Ph.D. and his collaborators addressed these requirements by developing a multidrug resistant TCRαβ-deficient CAR T-cell. This engineered T-cell displayed efficient antitumor activity and significant resistance to purine and pyrimidine nucleoside analogues, which are currently used clinically in preconditioning lymphodepleting regimens. Their properties could prevent their alloreactivity and enable control over engraftment in patients. In addition, they are compatible in combination therapy, an approach likely to improve clinical outcomes. By providing a basic framework to develop a universal T-cell compatible with allogeneic adoptive transfer, Cellectis is laying the foundation for the large-scale utilization of CAR T-cell immunotherapies.
Julien Valton, Ph.D. Innovation Senior Scientist
Dr. Julien Valton obtained his Ph.D. degree at Université Joseph Fourier in Grenoble (France) where he was trained as enzymologist. He then joined the Yale School of Medicine to apply his knowledge to therapeutic research, by investigating the mechanism of inhibition of receptor tyrosine kinases involved in the development of gastrointestinal cancer. In 2009, he moved a step further into the field of applied science by joining the R&D Department of Cellectis, where he actively participated to set, improve and use meganucleases and TALEN for targeted gene therapy and genome engineering purposes. He is now part of the NYC based Cellectis, Inc.
A Multidrug Resistant Engineered CAR T-Cell for Allogeneic Combination Immunotherapy
Julien Valton, Valérie Guyot, Alan Marechal, Jean Marie Filhol, Alexandre Juillerat, Aymeric Duclert, Philippe Duchateau and Laurent Poiro
Agios Pharmaceuticals Announces FDA Orphan Drug Designation Granted to AG-120 for Treatment of IDH1-Mutant Positive Acute Myelogenous Leukemia
On June 10, 2015 Agios Pharmaceuticals reported that the U.S. Food and Drug Administration (FDA) has granted the company orphan drug designation for AG-120 for treatment of patients with acute myelogenous leukemia (AML) (Press release, Agios Pharmaceuticals, JUN 10, 2015, View Source;p=RssLanding&cat=news&id=2058334 [SID:1234505391]). AG-120 is an oral, first-in-class IDH1 mutant inhibitor being evaluated in a Phase 1 clinical trial in patients with advanced hematologic malignancies that carry an IDH1 mutation.
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The FDA’s Office of Orphan Drug Products grants orphan status to support development of medicines for underserved patient populations, or rare disorders, that affect fewer than 200,000 people in the U.S. Orphan drug designation provides to Agios certain benefits, including market exclusivity upon regulatory approval if received, exemption of FDA application fees and tax credits for qualified clinical trials.
"Receiving orphan drug designation for AG-120 is an important milestone as we continue to move this program to late-stage development," said Chris Bowden, M.D. chief medical officer of Agios. "We are pleased with the progress we are making in the clinic and look forward to presenting new data from our ongoing Phase 1 study of AG-120 at the Congress of the European Hematology Association (EHA) (Free EHA Whitepaper) later this week. We believe that AG-120, which is on track to initiate multiple expansion cohorts in the next month, has the potential to play a significant role in shifting the treatment paradigm for IDH1-mutant positive hematologic cancers from the conventional chemotherapy approach."
AML, a cancer of blood and bone marrow characterized by rapid disease progression, is the most common acute leukemia in adults. Undifferentiated blast cells proliferate in the bone marrow rather than mature into normal blood cells. AML incidence significantly increases with age, and according to the American Cancer Society the median age is 66. Less than 10 percent of U.S. patients are eligible for bone marrow transplant, and the vast majority of patients do not respond to chemotherapy and progress to relapsed/refractory AML. The five-year survival rate for AML is approximately 20 to 25 percent. IDH1 mutations are present in about 6 to 10 percent of AML cases.