A single dose of a PD-1 inhibitor before surgery predicts outcomes in melanoma patients

Medical Xpress | February 25, 2019

A single dose of a PD-1 inhibitor before surgery for melanoma can put patients in remission. Researchers from the Abramson Cancer Center at the University of Pennsylvania, who documented this finding in the largest cohort of patients to be treated with anti-PD-1 drugs before surgery, also showed that immune responses brought on by this therapy can peak as early as seven days after treatment—much earlier than previous studies have shown. Patients in this study completed up to a year of anti-PD-1 therapy after surgery, and those with complete responses after the initial dose have remained cancer free for more than two years—the longest follow-up data to date for a trial evaluating this treatment approach for patients with melanoma. Further, researchers also identified patterns in the way melanoma that comes back after surgery adapts to develop resistance to PD-1 inhibitors, potentially paving the way for greater understanding of how best to help these patients. The findings appear in Nature Medicine today. "Knowing so much earlier whether or not patients are responding to PD-1 inhibitors may give us the ability to guide them to the most appropriate therapy with the greatest chance for success," said the study's lead author Alexander C. Huang, MD, an instructor of Hematology-Oncology in Penn's Perelman School of Medicine and a Parker Bridge Scholar through the Parker Institute for Cancer Immunotherapy.

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Family farmer Bill Horan talks about how time - the most precious gift - has been given back to farmers and their families thanks to plant biotechnology.

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Sesen Bio and Carisma Therapeutics Announce Merger Agreement

Sesen Bio and Carisma Therapeutics | September 22, 2022

Sesen Bio, Inc. and Carisma Therapeutics Inc. a privately held, clinical stage biopharmaceutical company focused on discovering and developing innovative immunotherapies, announced that they have entered into a definitive merger agreement to combine the companies in an all-stock transaction. The combined company will focus on the advancement of Carisma’s proprietary cell therapy platform that utilizes engineered macrophages and monocytes to potentially transform the treatment of cancer and other serious disorders. Carisma is pioneering the development of chimeric antigen receptor macrophage therapies and is believed to be the only company developing CAR-M therapies with demonstrated proof of mechanism and safety data in clinical trials. The combined company is expected to operate under the name Carisma Therapeutics Inc. and trade on Nasdaq under the ticker symbol “CARM”. Carisma has also secured commitments from a syndicate of investors for a $30 million financing, including HealthCap, AbbVie, Wellington Partners, SymBiosis, Penn Medicine, TPG Biotech, MRL Ventures Fund, the therapeutics-focused corporate venture arm of Merck & Co., Agent Capital, Solasta, Livzon, Pictet Alternative Advisors and 4Bio, which is expected to close concurrently with the completion of the merger. With the cash expected from both companies at closing and the proceeds of the concurrent financing, the combined company is expected to have approximately $180 million in cash, cash equivalents and marketable securities. These cash resources are expected to be used to advance Carisma’s pipeline through multiple ongoing and planned key data readouts across several clinical trials and to fund operating expenses and capital expenditure requirements through 2024. The merger and related financing are expected to close in the next three to four months. “The proposed merger represents an exciting opportunity for shareholders of each company, and we believe it gets us one step closer to our goal of revolutionizing the field of immunotherapy. This transaction will provide us with financial strength to not only continue to develop our lead candidate CT-0508, but also allow us to accelerate the growth of our platform and pipeline within and outside of oncology and develop additional strong strategic partnerships beyond those we already have with Moderna and Novartis. Carisma is focused on delivering cutting-edge technology for patients in a way that has never been done before, and we look forward to advancing this important mission.” Steven Kelly, President and Chief Executive Officer of Carisma “This transaction represents the result of a thoughtful and careful review of strategic alternatives over the past four months, during which Carisma’s clinical programs, management team, and corporate strategy stood out amongst the 42 bids reviewed,” said Dr. Thomas Cannell, President and Chief Executive Officer of Sesen Bio. “Carisma is an exciting clinical-stage company with groundbreaking science and an impressive management team, which we believe makes them the optimal partner to provide value for our shareholders. Our mission at Sesen Bio has always been to save and improve the lives of patients with cancer, and we believe Carisma has the science and the unwavering patient focus required to make that mission a reality.” About the Proposed Merger Pre-merger Sesen Bio stockholders are expected to own approximately 41.7% and pre-merger Carisma stockholders are expected to own approximately 58.3% of the combined company, in each case before giving effect to the concurrent financing described above and the conversion of the outstanding Moderna convertible note. Under the terms of the merger agreement, stockholders of Carisma will receive newly issued shares of Sesen Bio common stock pursuant to an exchange ratio formula set forth in the merger agreement. The percentage of the combined company that Sesen Bio stockholders will own upon the closing of the merger is further subject to adjustment based on the amount of Sesen Bio’s net cash at the time of closing. Immediately prior to the closing of the proposed merger, Sesen Bio stockholders of record will be issued a contingent value right (CVR) for each outstanding share of Sesen Bio common stock held by such Sesen Bio stockholder as of such date, representing the right to receive certain cash payments from proceeds received by Sesen Bio related to the Roche Asset Purchase Agreement, if any, subject to customary deductions, including for expenses and taxes. SVB Securities is acting as exclusive financial advisor to Sesen Bio for the transaction and Hogan Lovells US LLP is serving as its legal counsel. Evercore Group LLC is serving as lead financial advisor to Carisma for the transaction and BofA Securities, Inc. is also serving as financial advisor to Carisma for the transaction. Wilmer Cutler Pickering Hale and Dorr LLP is serving as legal counsel to Carisma. BofA Securities, Inc. and Evercore Group L.L.C. are serving as co-placement agents for Carisma’s concurrent financing and Shearman & Sterling LLP is serving as the placement agents’ legal counsel. About Sesen Bio Sesen Bio, Inc. is a late-stage clinical company focused on targeted fusion protein therapeutics for the treatment of patients with cancer. Sesen Bio’s most advanced product candidate, Vicineum™, also known as VB4-845, is a locally-administered targeted fusion protein composed of an anti-epithelial cell adhesion molecule antibody fragment tethered to a truncated form of Pseudomonas exotoxin A for the treatment of non-muscle invasive bladder cancer. On July 15, 2022, Sesen Bio made the strategic decision to voluntarily pause further development of Vicineum in the US. The decision was based on a thorough reassessment of Vicineum, which included the incremental development timeline and associated costs for an additional Phase 3 clinical trial, following Sesen Bio’s discussions with the United States Food and Drug Administration. Sesen Bio has turned its primary focus to assessing potential strategic alternatives with the goal of maximizing shareholder value. Additionally, Sesen Bio intends to seek a partner for the further development of Vicineum. About Carisma Therapeutics Carisma Therapeutics Inc. is a biopharmaceutical company dedicated to developing a differentiated and proprietary cell therapy platform focused on engineered macrophages, cells that play a crucial role in both the innate and adaptive immune response. The first applications of the platform, developed in collaboration with the University of Pennsylvania*, are autologous chimeric antigen receptor (CAR)-macrophages for the treatment of solid tumors. Carisma Therapeutics is headquartered in Philadelphia, PA.

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RESEARCH, INDUSTRY OUTLOOK

BigHat Biosciences Announces Research Collaboration with Merck

BigHat Biosciences, Inc. | November 30, 2022

BigHat Biosciences, Inc., a biotechnology company with a machine learning-guided antibody discovery and development platform, announced a collaboration with Merck, known as MSD outside of the United States and Canada, to apply the company’s technology to design candidates for up to three drug discovery programs. BigHat’s design platform, Milliner, integrates a high-speed characterization with ML technologies to engineer antibodies with more complex functions and better biophysical properties. This approach could help reduce the difficulty of optimizing antibodies and other therapeutic proteins. Under the collaboration, BigHat and Merck will collaborate to optimize up to three proteins by leveraging BigHat’s platform to synthesize, express, purify, and characterize molecules. Mark DePristo, co-founder and CEO of BigHat, continued, "We are thrilled to be collaborating with Merck's world-class drug development teams to design safer, more effective antibodies for these important therapeutic programs.” The teams have initiated work on the first program and are looking forward to using the power of the complementary skills sets within each research team to generate high-quality lead antibodies. “We are excited to begin this collaboration to advance next-generation antibody therapeutics to patients,” said Elizabeth Schwarzbach, BigHat’s Chief Business Officer. "This agreement with Merck brings us a major step closer to our goal of 3-5 deep collaborations with leading biopharmas to complement our internal therapeutic pipeline." “This agreement with BigHat expands Merck’s strategy of applying AI/ML across our drug discovery capabilities. We look forward to working with the team to leverage BigHat’s technology and expertise in enabling molecular design of novel biologic candidates.” Juan Alvarez, vice president of Biologics Discovery, Merck Research Laboratories About BigHat Biosciences, Inc. BigHat Biosciences is designing safer, more effective antibody therapies for patients using machine learning and synthetic biology. BigHat integrates a wet lab for high-speed characterization with machine learning technologies to guide the search for better antibodies. They apply these design capabilities to develop new generations of safer and more effective treatments for patients suffering from today’s most challenging diseases. BigHat is a Series B biotech outside San Francisco with a team-oriented, inclusive, and family-friendly culture. BigHat’s broad pipeline of wholly-owned and partnered therapeutic programs span many disparate indications with high unmet need, such as cancer, inflammation, and infectious disease. BigHat has raised over $100M from top investors, including Section 32, a16z, and 8VC.

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CELL AND GENE THERAPY

Tiziana Life Sciences Announces Grant received by the Brigham and Women’s Hospital to Explore the Use of Intranasal anti-CD3 mAb

Tiziana Life Sciences Ltd. | September 16, 2022

Tiziana Life Sciences Ltd. a biotechnology company developing breakthrough immunomodulation therapies via novel routes of drug delivery, today announces that a Lawrence & Isabel Barnett Drug Development Program Grant will be awarded to the Ann Romney Center for Neurologic Diseases at the Brigham and Women’s Hospital by the ALS Association for the study of an intranasal anti-CD3 monoclonal antibody in an animal model of Amyotrophic Lateral Sclerosis (ALS). Howard L. Weiner, M.D., Co-Director of the Ann Romney Center for Neurologic Diseases at BWH and Chairman of Tiziana's Scientific Advisory Board, stated, “This prestigious research grant will be used to further study the role of intranasal anti-CD3 mAb in dampening the microglial activation which amplifies ALS disease progression. This research follows our recently presented positive findings on intranasal anti-CD3 mAb in Alzheimer’s Disease preclinical models of neuroinflammation. Additionally, we are currently studying foralumab, the first entirely human anti-CD3 mAb, in patients with secondary progressive multiple sclerosis.” Gabriele Cerrone, Executive Chairman and interim Chief Executive Officer of Tiziana, remarked, “Intranasal foralumab has demonstrated potential across multiple Central Nervous System (CNS) indications. We are encouraged by the preclinical research using an intranasal anti-CD3 mAb in the neuroinflammatory related diseases of ALS and Alzheimer’s, as well as the impressive clinical benefits we have already shown for foralumab in patients with multiple sclerosis. While our initial focus is on our ongoing MS program which will continue to generate clinical read-outs, we are excited by foralumab’s potential to help highly debilitated ALS patients with limited therapeutic options and high unmet need.” “We have now seen the potential of intranasal foralumab to dampen microglial activation in three major neuroinflammatory-related diseases, which creates significant optionality for exploring its benefits in some of the most important and burdensome medical conditions of our time.” Matthew W. Davis, M.D., RPh, Chief Medical Officer of Tiziana About the Barnett Drug Development Grant The ALS Association’s Barnett Drug Development grant program supports preclinical drug discovery and development of new or repurposed treatments for ALS. There is an urgent need for new and improved therapies for ALS, as there is still no cure. The Lawrence and Isabel Barnett Drug Development Program is open to industry and academic investigators proposing to develop novel or repositioning approaches for ALS. The Association seeks applications for the preclinical assessment of therapeutics for ALS that have a high probability of reaching the clinic within three years. About Foralumab Foralumab the only entirely human anti-CD3 mAb, has shown reduced release of cytokines after IV administration in healthy volunteers and in patients with Crohn's disease. In a humanized mouse model it was shown that while targeting the T-cell receptor, orally administered foralumab modulates immune responses of the T-cells and enhances regulatory T-cells thereby providing therapeutic benefit in treating inflammatory and autoimmune diseases without the occurrence of potential adverse events usually associated with parenteral mAb therapy. Once a day treatment for 10 consecutive days with intranasal foralumab was both well tolerated and produced clinical responses in COVID-19 patients. Based on these studies, the intranasal and oral administration of Foralumab offers the potential to become a well-tolerated immunotherapy for autoimmune and inflammatory diseases by the induction of Tregs. About Tiziana Life Sciences Tiziana Life Sciences is a clinical-stage biopharmaceutical company developing breakthrough therapies using transformational drug delivery technologies to enable alternative routes of immunotherapy. Tiziana’s innovative nasal, oral and inhalation approaches in development have the potential to provide an improvement in efficacy as well as safety and tolerability compared to intravenous (IV) delivery. Tiziana’s two lead candidates, intranasal foralumab, the only fully human anti-CD3 mAb, and milciclib, a pan-CDK inhibitor, have both demonstrated a favorable safety profile and clinical response in patients in studies to date. Tiziana’s technology for alternative routes of immunotherapy has been patented with several applications pending and is expected to allow for broad pipeline applications.

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