PORTAGE MAKES ADDITIONAL INVESTMENT IN STIMUNITY S.A.S, A PARIS-BASED CANCER IMMUNOTHERAPY COMPANY.

On May 11, 2020 Portage Biotech Inc. ("Portage" or "the Company") (Canadian Securities Exchange: PBT.U, OTC Markets : PTGEF), reported that It has made an additional €900k investment in its associate, Stimunity, the Paris-based cancer immunotherapy company focused on STING (Press release, Portage Biotech, MAY 11, 2020, View Source [SID1234557483]). Stimunity has reached a major milestone in its preclinical development plan and the additional financing will enable it to start the manufacturing of its biologic cGAMP-VLP (STI-001) lead compound.

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"We knew since the beginning of the company that STING-activating cGAMP Virus-Like Particle (cGAMP-VLP) technology has a unique property enabling its payload to preferentially target immune cells, which is different from other chemical STING approaches. This has an impact on the stimulation of the immune system and the quality of the anti-tumoral response. We have determined that this targeting mechanism is able to deliver the cGAMP via systemic route of administration and that it leads to induction of systemic anti-tumor T-cell response" says Nicolas Manel, co-founder and Scientific Advisor of the company.

"These new data demonstrate that picking the right approach to modulate STING is key. The use of VLP carrier enables a simple systemic approach to deliver STING modulation directly to immune cells. Portage is pleased with the work performed by Stimunity and this new round of financing will support the progress toward clinical trials" says Dr. Ian Walters, Chairman of Stimunity’s Supervisory Board and CEO of Portage.

BeiGene Reports First Quarter 2020 Financial Results

On May 11, 2020 BeiGene, Ltd. (NASDAQ: BGNE; HKEX: 06160), a commercial-stage biotechnology company focused on developing and commercializing innovative molecularly-targeted and immuno-oncology drugs for the treatment of cancer, reported recent business highlights, anticipated upcoming milestones, and financial results for the first quarter of 2020 (Press release, BeiGene, MAY 11, 2020, View Source [SID1234557510]).

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"Our recent approval of tislelizumab in China for patients with previously treated locally advanced or metastatic urothelial carcinoma, as well as the positive readouts of two Phase 3 trials of tislelizumab for first-line non-small cell lung cancer at interim analyses, are key milestones for BeiGene as we execute on our goals and work to create impactful medicines that will be accessible to far more cancer patients around the world. With the COVID-19 pandemic continuing to create obstacles globally, our team has been quick to react as we work to minimize the impact and support our patients and physicians on the frontlines. We are managing the challenges to maintain momentum with our broad development program and are contributing to the global effort to fight the pandemic," said John V. Oyler, Co-Founder, Chief Executive Officer, and Chairman of BeiGene. "In addition to our launch of tislelizumab in China this quarter, we are on the way to having potentially up to 11 commercial products before the end of next year, and look forward to presenting Phase 3 data on BRUKINSA and tislelizumab at ASCO (Free ASCO Whitepaper). We also anticipate several additional Phase 3 or potentially registration-enabling studies reading out in the next 12 months."
Recent Business Highlights and Upcoming Milestones
Commercial Operations

Launched tislelizumab in China in March 2020 for patients with classical Hodgkin’s lymphoma (cHL) who have received at least two prior therapies;

Received approval from the China National Medical Products Administration (NMPA) for tislelizumab as a treatment for patients with previously treated locally advanced or metastatic urothelial carcinoma;

Generated $52.06 million in product revenue in the three months ended March 31, 2020;

As announced previously, the NMPA suspended the importation, sales and use of ABRAXANE (nanoparticle albumin-bound paclitaxel) in China supplied to BeiGene by Celgene Corporation, a Bristol Myers Squibb (BMS) company. As a result, Celgene initiated a voluntary recall of ABRAXANE in mainland China; and

Received commercial insurance reimbursement for tislelizumab as a treatment for relapsed/refractory classical Hodgkin’s lymphoma in Zhuhai, China.
Amgen Collaboration

Transition activities for the three Amgen commercial oncology medicines, XGEVA (denosumab), KYPROLIS (carfilzomib), and BLINCYTO (blinatumomab) in China are on track. BeiGene is preparing to commence promotional activities for XGEVA in patients with giant cell tumor of bone in the third quarter of 2020. Regulatory activities for KYPROLIS and BLINCYTO are in progress, with new drug applications (NDAs) to the NMPA submitted in the fourth quarter 2019. Additionally, a supplemental NDA for XGEVA for an expanded indication in skeletal-related events in China was accepted by the NMPA; and

BeiGene is working with Amgen to advance the clinical-stage oncology assets in the collaboration pursuant to the global development plan.
EUSA Collaboration

Regulatory discussions are in progress and biologics license applications (BLAs) in China for both SYLVANT (siltuximab) and QARZIBA▼ (dinutuximab beta) are expected to be submitted in 2020.
Clinical Programs
BRUKINSA (zanubrutinib), a small molecule inhibitor of Bruton’s tyrosine kinase (BTK) designed to maximize BTK occupancy and minimize off-target effects; approved in the United States

Initiated a multi-center Phase 2 clinical trial (NCT04382586) evaluating zanubrutinib for the treatment of patients hospitalized for COVID-19 infection and pulmonary distress. The trial is designed to enroll approximately 42 patients, randomized to receive oral zanubrutinib at 320 mg once daily for 28 days plus supportive care, or placebo plus supportive care. An additional cohort of four to 10 patients on mechanical ventilation will all receive zanubrutinib plus

supportive care. The trial’s primary endpoint is the respiratory failure-free survival rate at day 28 in the randomized cohort.
Expected Milestones for Zanubrutinib

Receive approvals in China for the treatment of patients with relapsed/refractory (R/R) mantle cell lymphoma (MCL) and R/R chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) in the first half of 2020;

Announce top-line results from the SEQUOIA trial comparing zanubrutinib with bendamustine plus rituximab in patients with treatment-naïve CLL or SLL as early as the second half of 2020;

File a supplemental new drug application (sNDA) in China for Waldenström’s macroglobulinemia (WM) in 2020;

Discuss data from the Phase 3 ASPEN trial (NCT03053440) comparing zanubrutinib to ibrutinib in patients with WM with the U.S. Food and Drug Administration (FDA) and European Medicines Agency (EMA) in 2020;

Complete expanded enrollment in the Phase 3 ALPINE trial (NCT03734016) comparing zanubrutinib with ibrutinib in patients with R/R CLL/SLL in 2020; and

Present data from Phase 3 ASPEN trial comparing zanubrutinib to ibrutinib in patients with WM in an oral presentation at the 2020 ASCO (Free ASCO Whitepaper) Virtual Science Program being held May 29-31, 2020, and present three-year follow-up data of treatment-naïve and previously treated patients with WM.
Tislelizumab, a humanized IgG4 anti-PD-1 monoclonal antibody specifically designed to minimize binding to FcγR on macrophages; approved in China

Announced that the Center for Drug Evaluation (CDE) of the NMPA accepted an sNDA of tislelizumab in combination with two chemotherapy regimens for first-line treatment of patients with advanced squamous non-small cell lung cancer (NSCLC);

Announced that the pivotal Phase 3 trial (NCT03663205) of patients with first-line advanced non-squamous NSCLC met its primary endpoint at the planned interim analysis, demonstrating a statistically significant improvement in progression-free survival (PFS) for tislelizumab in combination with pemetrexed and platinum chemotherapy compared to pemetrexed and platinum chemotherapy alone as assessed by the independent review committee (IRC). The safety profile of tislelizumab in combination with pemetrexed and platinum chemotherapy was consistent with the known risks of each study treatment, and no new safety signals were identified;

Completed enrollment in the Phase 3 trial (NCT03358875) of tislelizumab versus docetaxel as a second- or third-line treatment in patients with NSCLC; and

Completed enrollment in the global Phase 3 trial (NCT03430843) of tislelizumab versus chemotherapy as a second-line treatment in patients with advanced esophageal squamous cell carcinoma (ESCC).
Expected Milestones for Tislelizumab

Submit an sNDA in China for first-line treatment of patients with advanced non-squamous NSCLC in 2020 and present data at an upcoming medical conference;

Have regulatory discussions with health authorities based on preliminary results from the global Phase 2 trial (NCT03419897) in second- or third-line patients with hepatocellular carcinoma (HCC) in 2020;

Present data from the Phase 3 trial in patients with first-line advanced squamous NSCLC at the 2020 ASCO (Free ASCO Whitepaper) Virtual Scientific Program;

Announce top-line results from the Phase 3 trial (NCT03358875) comparing tislelizumab versus docetaxel in second-or third-line patients with NSCLC and in the global Phase 3 trial (NCT03430843) comparing tislelizumab versus chemotherapy in second-line patients with advanced ESCC in 2020 or early 2021;

Initiate a Phase 3 trial in China for patients with resectable Stage II or IIIA NSCLC; and

Complete enrollment in the pivotal Phase 2 trial (NCT03736889) in China of patients with mismatched repair deficient (dMMR) or microsatellite instability-high (MSI-H) solid tumors in 2020.

Pamiparib, an investigational selective small molecule inhibitor of PARP1 and PARP2

Completed enrollment in the Phase 2 clinical trial (NCT03575065) in China in patients with advanced HER2-negative breast cancer harboring germline BRCA mutation that have progressed despite standard therapy or for which no standard therapy exists.
Expected Milestones for Pamiparib

Have regulatory discussions based on preliminary results from the Phase 2 trial (NCT03333915) in Chinese patients with third-line and above previously treated ovarian cancer (OC) harboring germline BRCA 1/2 mutations, and potentially submit an NDA in China in 2020;

Announce top-line results from the Phase 3 trial (NCT03519230) of pamiparib as a maintenance treatment in patients with platinum-sensitive recurrent OC in 2020 or the first half of 2021; and

Present updated data from the Phase 1 trial (NCT02660034) of pamiparib in combination with tislelizumab in patients with advanced solid tumors in 2020.
Lifirafenib, an investigational RAF dimer inhibitor

Published Phase 1 data in the Journal of Clinical Oncology.
BGB-A1217, an investigational TIGIT monoclonal antibody
Expected Milestones for BGB-A1217

Present clinical data from the Phase 1 trial in 2020 or early 2021.
BGB-11417, an investigational small molecule Bcl-2 inhibitor

Initiated patient enrollment for the Phase 1 trial (NCT04277637) of BGB-11417 in patients with mature B-cell malignancies. We intend to develop BGB-11417 both as a monotherapy and in combination with zanubrutinib.
Collaboration Programs
Sitravatinib, an investigational tyrosine kinase inhibitor of receptor tyrosine kinases (RTKs), including TAM family receptors (TYRO3, Axl, MER), split family receptors (VEGFR2, KIT) and RET, licensed from Mirati Therapeutics in Asia (excluding Japan), Australia, and New Zealand
Expected Milestones for Sitravatinib

Present additional Phase 1 clinical data on sitravatinib combined with tislelizumab at a medical meeting in 2020.
ZW25, a novel investigational Azymetric bispecific antibody currently in Phase 2 clinical development with Zymeworks, Inc.

Initiated enrollment in a two-arm Phase 1b/2 trial (NCT04276493) evaluating ZW25 in combination with chemotherapy as a first-line treatment for patients with metastatic HER2-positive breast cancer and in combination with chemotherapy and tislelizumab as a first-line treatment for patients with metastatic HER2-positive gastroesophageal adenocarcinoma (GEA).
Expected Milestones for ZW25

Support clinical development and enrollment of the planned registration-enabling trials in refractory HER2-positive biliary tract cancer in 2020 and first-line HER2-positive gastroesophageal adenocarcinomas in late 2020 or early 2021.
BGB-3245, an investigational RAF dimer inhibitor with activity against mutant monomeric and dimeric forms of B-RAF in preclinical studies. BGB-3245 is being developed by MapKure, which BeiGene jointly owns with SpringWorks Therapeutics

Announced that the first patient has been dosed in Australia in the Phase 1 clinical trial (NCT04249843) in patients with advanced or refractory solid tumors. The U.S. FDA has allowed the Investigational New Drug (IND) application submitted for BGB-3245 to proceed, which will enable study expansion to U.S. sites.
Manufacturing Facilities

Completed equipment validation and executed manufacturing process validation for the first phase of our manufacturing facility in Guangzhou; and

Began construction of the second phase of our manufacturing facility in Guangzhou to significantly increase manufacturing capacity, expected to be completed by the end of 2020.
COVID-19 Impact and Response

The Company expects that the worldwide health crisis of COVID-19 will have a negative impact on its operations, including commercial sales, regulatory interactions and inspections, and clinical trial recruitment and participation. The impact on the Company’s operations in China has started to alleviate, as much of the country gradually resumes regular business. The Company is working to continue to minimize delays and disruptions and continues to execute on its commercialization, regulatory and clinical development goals globally.

In addition to the clinical trial of zanubrutinib in COVID-19 patients, the Company announced plans to work with Atreca, Inc. and IGM Biosciences, Inc. to leverage the parties’ technology and expertise in an effort to discover, develop, and manufacture novel IgM or IgA antibodies targeting SARS-CoV-2 for the potential treatment of COVID-19.
First Quarter 2020 Financial Results
Cash, Cash Equivalents, Restricted Cash, and Short-Term Investments were $3.38 billion as of March 31, 2020, compared to $985.50 million as of December 31, 2019.

Total cash and short-term investments increased $2.39 billion in the three months ended March 31, 2020, primarily due to the $2.78 billion of cash received from the sale of American Depositary Shares to Amgen in connection with the closing of the Amgen collaboration on January 2, 2020. In the three months ended March 31, 2020, cash used in operating activities totaled $341.94 million, capital expenditures were $21.53 million, and cash used for upfront license payments totaled $43.00 million.
Revenue for the three months ended March 31, 2020 was $52.06 million, compared to $77.83 million in the same period of 2019. The decrease in total revenue is primarily attributable to the lack of collaboration revenue after the termination of the Celgene collaboration agreement for tislelizumab and decreased product sales of ABRAXANE, REVLIMID (lenalidomide) and VIDAZA (azacitidine) in China, partially offset by the initial sales of tislelizumab in China and BRUKINSA in the United States.

Product revenues totaled $52.06 million for the three months ended March 31, 2020, compared to $57.42 million for the three months ended March 31, 2019, and were comprised of:

Product revenue of $20.53 million from sales of tislelizumab in China since its launch in March 2020, including launch inventory build at distributors. Despite the challenges posed by COVID-19, the China commercial team launched tislelizumab on plan in the first quarter through efforts in multiple channels including extensive online promotion;

Product revenue of $30.82 million from sales of ABRAXANE, REVLIMID and VIDAZA in China, compared to $57.42 million in the same period of the prior year. The decrease in revenues was due to the negative impact of the COVID-19 pandemic, increased generic competition, and the suspension of ABRAXANE sales in China by the NMPA in March 2020; and

Product revenue of $0.72 million from sales of BRUKINSA in the United States. Early launch indicators including new patient starts, reimbursement coverage, and physician perception have been encouraging.

Collaboration revenue totaled nil for the three months ended March 31, 2020, compared to $20.41 million for the three months ended March 31, 2019.

Expenses for the three months ended March 31, 2020 were $425.82 million, compared to $251.59 million in the same period of 2019.

Cost of sales for the three months ended March 31, 2020 were $14.15 million, compared to $15.26 million in the same period of 2019. Cost of sales primarily includes acquisition costs related to the amount of ABRAXANE, REVLIMID and VIDAZA that was sold during the period in China, as well as the post-approval cost of tislelizumab and BRUKINSA that was sold during the period.

R&D Expenses for the three months ended March 31, 2020 were $304.30 million, compared to $178.35 million in the same period of 2019. The increase in R&D expenses was primarily attributable to continued increases in spending on our ongoing and newly initiated late-stage pivotal clinical trials, development expenses associated with the Amgen collaboration, the preparation for additional regulatory submissions, and manufacturing costs related to pre-commercial activities and supply. R&D expense in the three months ended March 31, 2020 also included $43.00 million of expense related to upfront license payments, compared to $10.00 million in the same period of 2019. Our co-funding obligation for the development of the pipeline assets under the Amgen collaboration for the three months ended March 31, 2020 was $56.00 million, of which $28.37 million was recorded as R&D expense. The remaining $27.63 million was recorded as a reduction of the R&D cost share liability. R&D-related share-based compensation expense was $20.40 million for the three months ended March 31, 2020, compared to $15.77 million for the same period of 2019.

SG&A Expenses for the three months ended March 31, 2020 were $107.08 million, compared to $57.65 million in the same period in 2019. The increase in SG&A expenses was primarily attributable to increased headcount, including the expansion of our commercial team to support the distribution of our commercial products in China and the United States, as well as higher professional service fees and costs to support our growing operations. SG&A-related share-based compensation expense was $17.86 million for the three months ended March 31, 2020, compared to $10.62 million for the same period of 2019.

Net Loss for the three months ended March 31, 2020 was $363.74 million, or $0.36 per share, or $4.70 per American Depositary Share (ADS), compared to $167.64 million, or $0.22 per share, or $2.81 per ADS in the same period in 2019.

Senti Biosciences to Present on Gene Circuit-Based Therapies at the 2020 ASGCT Annual Meeting

On May 11, 2020 Senti Biosciences, Inc., the gene circuit company focused on outsmarting complex diseases with intelligent medicines, reported upcoming oral and poster presentations at the 23rd Annual Meeting of the American Society for Gene and Cell Therapies (ASGCT) (Free ASGCT Whitepaper), being held May 12-15, 2020 in a virtual format (Press release, Senti Biosciences, MAY 11, 2020, View Source [SID1234557527]).

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"We are excited about this opportunity to further showcase the potential of our gene circuit platform in oncology," said Tim Lu, M.D., Ph.D., CEO and cofounder of Senti Biosciences. "At ASGCT (Free ASGCT Whitepaper), we are presenting data on in vivo gene therapies, which are equipped with computer-like logic to target tumors in a highly specific manner. Additionally, we will highlight new preclinical data on SENTI-101, an allogeneic cell therapy genetically modified to express a potent combination of cytokines, which give us confidence in its therapeutic potential as we progress towards IND submission."

Details of the presentations are listed below:

ASGCT Annual Meeting, May 12-15, 2020

Title: Tumor-Selective Gene Circuits Enable Highly Specific Localized Cancer Immunotherapy
Abstract Number: 17
Oral Presentation Session: Cancer — Targeted Gene and Cell Therapy
Presentation Date and Time: May 12, 10:45 a.m. – 11:00 a.m. EDT
Presenter: Russell Gordley, Ph.D.

Title: Phenotypic and Functional Characterization of Gene Circuit Modified Allogeneic Mesenchymal Stromal Cells (MSCs) for Solid Tumor Immunotherapy
Abstract Number: 783
Poster Session: Cancer — Targeted Gene and Cell Therapy
Presentation Date and Time: May 13, 5:30 p.m. – 6:30 p.m. EDT
Presenter: Dharini Iyer, Ph.D.

Title: SENTI-101, an Allogeneic Cell Product Expressing a Combination of Cytokines, Promotes Anti-Tumor Immunity in a Syngeneic Orthotopic Model of Pancreatic Ductal Adenocarcinoma
Abstract Number: 1180
Poster Session: Cancer — Targeted Gene and Cell Therapy
Presentation Date and Time: May 14, 5:30 p.m. – 6:30 p.m. EDT
Presenter: Ori Maller, Ph.D.

Mustang Bio Reports First Quarter 2020 Financial Results and Recent Corporate Highlights

On May 11, 2020 Mustang Bio, Inc. ("Mustang") (NASDAQ: MBIO), a clinical-stage biopharmaceutical company focused on translating today’s medical breakthroughs in cell and gene therapies into potential cures for hematologic cancers, solid tumors and rare genetic diseases, reported financial results and recent corporate highlights for the first quarter ended March 31, 2020 (Press release, Mustang Bio, MAY 11, 2020, View Source [SID1234557553]).

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Manuel Litchman, M.D., President and Chief Executive Officer of Mustang, said, "We were pleased to announce several important milestones in the first few months of 2020. Most notably, we were excited to submit our Investigational New Drug ("IND") application with the U.S. Food and Drug Administration ("FDA") for MB-107, our lentiviral gene therapy for the treatment of X-linked severe combined immunodeficiency ("XSCID"), also known as bubble boy disease, and we look forward to commencing a multi-center Phase 2 clinical trial in newly diagnosed infants with XSCID under the age of two. We also anticipate filing a second IND in the third quarter of this year for a multi-center trial for the treatment of previously transplanted XSCID patients. Additionally, the European Medicines Agency ("EMA") granted Advanced Therapy Medicinal Product ("ATMP") classification to MB-107, which is an important step in establishing our path to market approval and commercialization in Europe."

"Among our other first quarter accomplishments was the complete response achieved at the lowest dose level in the first subject treated following process optimization in our Phase 1/2 clinical trial of MB-106, our CD20-targeted, autologous CAR T cell therapy, for patients with relapsed or refractory B-cell non-Hodgkin lymphomas. This trial is ongoing, and we hope to announce additional interim data later this year. We are also very pleased to report that MB-105, a PSCA-directed CAR T currently under investigation in a Phase 1 trial at City of Hope, appeared to be active in the first patient to receive the therapy following a standard CAR T conditioning regimen. As we progress through 2020, we look forward to advancing our gene and CAR T cell therapies toward additional potentially value-creating regulatory and clinical milestones in the months ahead," Dr. Litchman concluded.

Recent Corporate Highlights:

·In May 2020, Mustang submitted an IND application with the FDA to initiate a multi-center Phase 2 clinical trial of MB-107 in newly diagnosed infants with XSCID who are under the age of two. The trial is expected to enroll 10 patients who, together with 15 patients enrolled in the current multicenter trial led by St. Jude Children’s Research Hospital, will be compared with 25 matched historical control patients who have undergone hematopoietic stem cell transplant ("HSCT"). The primary efficacy endpoint will be event-free survival. The initiation of this trial is currently on hold pending CMC clearance by the FDA. Mustang is targeting topline data from the trial in the second half of 2022.
·Mustang further expects to file an IND in the third quarter of 2020 for a registrational multi-center Phase 2 clinical trial of its lentiviral gene therapy in previously transplanted XSCID patients. This product will be designated MB-207. Mustang anticipates enrolling 20 patients and comparing them to matched historical control patients who have undergone a second HSCT. Mustang is targeting topline data for this trial in the second half of 2022.
·In the ongoing Phase 1 trial at City of Hope with MB-105, a PSCA-directed CAR T administered systemically to patients with PSCA-positive castration resistant prostate cancer, the first patient to receive the therapy following a standard CAR T conditioning regimen experienced a significant reduction in his prostate-specific antigen ("PSA") at day 28. This PSA response was associated with radiographic improvement of the patient’s metastatic disease.

In April 2020, Mustang announced that the EMA granted ATMP classification to MB-107 for the treatment of XSCID.
·In February 2020, Mustang announced that the first subject treated with the optimized MB-106 (CD20-targeted, autologous CAR T cell therapy) manufacturing process, developed in collaboration between Mustang and Fred Hutchinson Cancer Research Center, achieved a complete response at the lowest starting dose in an ongoing Phase 1/2 clinical trial. The trial is evaluating the safety and efficacy of MB-106 in subjects with relapsed or refractory B-cell non-Hodgkin lymphomas.

Financial Results:

·As of March 31, 2020, Mustang’s cash, cash equivalents and restricted cash totaled $56.8 million, compared to $62.4 million as of December 31, 2019, a decrease of $5.6 million for the first quarter.
·Research and development expenses were $9.3 million for the first quarter of 2020. This compares to $7.0 million for the first quarter of 2019. Non-cash, stock-based compensation expenses included in research and development were $0.4 million for the first quarter of 2020, compared to $0.1 million for the first quarter of 2019.
·Research and development expenses from license acquisitions totaled $0.3 million for the first quarter of 2020, compared to $0.5 million for the first quarter of 2019.
·General and administrative expenses were $2.0 million for the first quarter of 2020. This compares to $2.3 million for the first quarter of 2019. Non-cash, stock-based compensation expenses included in general and administrative expenses were $0.4 million for the first quarter of 2020, compared to $0.7 million for the first quarter of 2019.
·Net loss attributable to common stockholders was $11.9 million, or $0.28 per share, for the first quarter of 2020, compared to a net loss attributable to common stockholders of $9.6 million, or $0.34 per share, for the first quarter of 2019.

Enhertu granted Breakthrough Therapy Designation in the US for HER2-positive metastatic gastric cancer

On May 11, 2020 AstraZeneca and Daiichi Sankyo Company, Limited (Daiichi Sankyo)’s Enhertu (trastuzumab deruxtecan) reported that it has been granted Breakthrough Therapy Designation (BTD) in the US for the treatment of patients with HER2-positive unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma who have received two or more prior regimens including trastuzumab (Press release, AstraZeneca, MAY 11, 2020, View Source [SID1234557441]).

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Gastric cancer is the third leading cause of cancer mortality with a five-year survival rate of 5% for metastatic disease.1,2 Approximately one in five gastric cancers are considered HER2 positive.3,4

The Food and Drug Administration’s (FDA) BTD is designed to accelerate the development and regulatory review of potential new medicines that are intended to treat a serious condition and address a significant unmet medical need. The new medicine needs to have shown encouraging early clinical results that demonstrate substantial improvement on a clinically significant endpoint over available medicines.

José Baselga, Executive Vice President, R&D Oncology, said: "Current therapy options are limited for patients with HER2-positive metastatic gastric cancer and for those who relapse, there are no approved HER2-targeted medicines. We look forward to working with the FDA to further explore the potential of Enhertu to become an important new treatment and the first antibody drug conjugate for this devastating disease."

Gilles Gallant, Senior Vice President, Global Head, Oncology Development, Oncology R&D, Daiichi Sankyo, said: "DESTINY-Gastric01 represents the first randomised trial of Enhertu to demonstrate clinically meaningful and statistically significant results, including objective response and survival increases compared to physician’s choice of chemotherapy. We are thrilled that the FDA has granted Enhertu a second Breakthrough Therapy Designation."

The FDA granted BTD based on data from the registrational Phase II DESTINY-Gastric01 trial and data from the Phase I trial published in The Lancet Oncology.5,6 In DESTINY-Gastric01, patients treated with Enhertu, a HER2-directed antibody drug conjugate (ADC), demonstrated a statistically significant and clinically meaningful improvement in objective response rate (ORR), the primary endpoint, and overall survival (OS), a key secondary endpoint, versus patients treated with investigator’s choice of chemotherapy (irinotecan or paclitaxel monotherapy).

The overall safety and tolerability profile of Enhertu (6.4 mg/kg) in DESTINY-Gastric01 was consistent with that seen in the Phase I trial. The most common adverse events were haematologic and gastrointestinal including neutrophil count decrease, anaemia, nausea and decreased appetite. There were cases of drug-related interstitial lung disease (ILD) and pneumonitis, the majority of which were Grade 1 and 2, with two Grade 3 and one Grade 4. No ILD-related deaths (Grade 5) occurred in patients with gastric cancer in the Phase I trial or in the Phase II DESTINY-Gastric01 trial.

The full results of DESTINY-Gastric-01 will be presented during the 2020 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) ASCO (Free ASCO Whitepaper)20 Virtual Scientific Program.

Enhertu received SAKIGAKE designation in March 2018 by Japan’s Ministry of Health, Labour and Welfare (MHLW) for potential use in the same HER2-positive gastric cancer patient population and was recently submitted to the MHLW for approval. This is the second BTD granted for Enhertu in the US. Enhertu received BTD in 2017 for HER2-positive metastatic breast cancer and received approval in December 2019.

Gastric cancer

Gastric (stomach) cancer is the fifth most common cancer worldwide and the third leading cause of cancer mortality; there were approximately one million new cases reported in 2018 and 783,000 deaths.1 In the US, it is estimated that 27,600 new cases of gastric cancer will be diagnosed in 2020 and more than 11,000 people will die from the disease.7

Approximately one in five gastric cancers are HER2 positive.2,4 HER2 is a tyrosine kinase receptor growth-promoting protein expressed on the surface of many types of tumours including gastric, breast and lung cancers. Gastric cancer is usually diagnosed in the advanced stage, but even when diagnosed in earlier stages of the disease the survival rate remains modest.8 Recommended 1st-line treatment for HER2-positive advanced or metastatic gastric cancer is combination chemotherapy plus trastuzumab, an anti-HER2 medicine, which has been shown to improve survival outcomes when added to chemotherapy. For gastric cancer that progresses on 1st-line treatment, there are no other approved HER2-targeting medicines.9

DESTINY-Gastric01

DESTINY-Gastric01 is a registrational Phase II, open-label, multi-centre trial testing the safety and efficacy of Enhertu in a primary cohort of 188 patients from Japan and South Korea with HER2-expressing, advanced gastric cancer or gastroesophageal junction adenocarcinoma (defined as IHC3+ or IHC2+/ISH+) who have progressed on two or more prior treatment regimens including fluoropyrimidine and platinum chemotherapy and trastuzumab. Patients were randomised 2:1 to receive Enhertu or investigator’s choice of chemotherapy (paclitaxel or irinotecan monotherapy). Patients were treated with Enhertu 6.4 mg/kg once every three weeks or chemotherapy. The primary endpoint of the trial is ORR, as assessed by an independent review committee. Secondary endpoints include OS, progression-free survival, duration of response, disease control rate and time to treatment failure as well as pharmacokinetic and safety endpoints.5

Enhertu

Enhertu (trastuzumab deruxtecan; fam-trastuzumab deruxtecan-nxki in the US) is a HER2-directed ADC and is the lead ADC in the oncology portfolio of Daiichi Sankyo and the most advanced programme in AstraZeneca’s ADC scientific platform. ADCs are targeted cancer medicines that deliver cytotoxic chemotherapy ("payload") to cancer cells via a linker attached to a monoclonal antibody that binds to a specific target expressed on cancer cells.

Enhertu is approved in the US and Japan for the treatment of adult patients with unresectable or metastatic HER2-positive breast cancer who have received two or more prior anti-HER2-based regimens based on the DESTINY-Breast01 trial.

Enhertu clinical development

A comprehensive development programme is underway globally with six registrational trials evaluating the efficacy and safety of Enhertu monotherapy across multiple HER2-driven cancers including breast, gastric and lung cancers. Trials in combination with other anticancer treatments, such as immunotherapy, are also underway.

Collaboration between AstraZeneca and Daiichi Sankyo

In March 2019, AstraZeneca and Daiichi Sankyo entered into a global collaboration to jointly develop and commercialise Enhertu worldwide, except in Japan where Daiichi Sankyo maintains exclusive rights. Daiichi Sankyo is solely responsible for manufacturing and supply.

AstraZeneca in oncology

AstraZeneca has a deep-rooted heritage in oncology and offers a quickly growing portfolio of new medicines that has the potential to transform patients’ lives and the Company’s future. With six new medicines launched between 2014 and 2020, and a broad pipeline of small molecules and biologics in development, the Company is committed to advance oncology as a key growth driver for AstraZeneca focused on lung, ovarian, breast and blood cancers. In addition to AstraZeneca’s main capabilities, the Company is actively pursuing innovative partnerships and investment that accelerate the delivery of our strategy, as illustrated by the investment in Acerta Pharma in haematology.

By harnessing the power of four scientific platforms – Immuno-Oncology, Tumour Drivers and Resistance, DNA Damage Response and ADCs – and by championing the development of personalised combinations, AstraZeneca has the vision to redefine cancer treatment and, one day, eliminate cancer as a cause of death.