- FDA Breakthrough Designation for CIN Indication: Plinabulin for Concurrent Administration with Myelosuppressive Chemotherapeutic Regimens in Patients with Non-Myeloid Malignancies for the Prevention of Chemotherapy-Induced Neutropenia (CIN) -
- Designation Based on PROTECTIVE-2 Phase 3 Interim Data, Reinforcing Significant Treatment Need in CIN -
- Among the First Three Innovative Drugs to Receive Breakthrough Therapy Designations in China -
NEW YORK, Sept. 08, 2020 (GLOBE NEWSWIRE) -- BeyondSpring Inc. (the Company or BeyondSpring) (NASDAQ: BYSI), a global biopharmaceutical company focused on developing innovative immuno-oncology cancer therapies to transform the lives of patients with unmet medical needs, today announced that its lead asset, first-in-class agent Plinabulin, has received the Breakthrough Therapy Designation (BTD) for the chemotherapy-induced neutropenia (CIN) indication from both the U.S. Food and Drug Administration (FDA) and Chinas Center for Drug Evaluation (CDE) of the National Medical Products Administration (NMPA).
The FDA's BTD is intended to expedite the development and review of a drug candidate that is planned to treat a serious or life-threatening disease or condition in which clinical evidence indicates that the drug may demonstrate substantial improvement over existing therapies on one or more clinically significant endpoints.The CDE in China established its BTD program in July 2020 to facilitate the research and development of innovative drugs that treat severe life-threatening or quality-of-life impairing diseases with no existing therapy or with proven evidence to demonstrate clear clinical benefits compared to existing therapies. Products with BTD from the CDE may be considered for conditional approval and priority review when submitting New Drug Applications (NDAs).
"Receipt of Breakthrough Therapy Designation from the FDA acknowledges both the significant unmet need among patients with CIN and the highly encouraging clinical results generated by Plinabulin, said Douglas Blayney, M.D., global Principal Investigator for Plinabulins CIN studies and Professor of Medicine at the Stanford University School of Medicine. This should expedite Plinabulins move into the clinic, which is beneficial for patients. The currently approved CIN prevention agents are all G-CSF-based and not available to all patients. Even with the use of G-CSFs, over 80 percent of cancer patients undergoing chemotherapy may still experience Grade 4 neutropenia, which could lead to severe infection, hospitalization and even death. Thus, CIN still represents an unmet medical need.
"The clinical profile Plinabulin has shown truly represents a breakthrough in the CIN space since G-CSFs," added Ramon Mohanlal, M.D., Ph.D., MBA, Chief Medical Officer and Executive Vice President, Research and Development, at BeyondSpring. We look forward to continuing to work with the FDA as we advance the development of Plinabulin to address this urgent medical need.
The Breakthrough Therapy application is based on the strength of the totality of the clinical data generated so far:
The Company expects to report the full PROTECTIVE-2 Phase 3 topline data in Q4 2020 and file an NDA with the FDA by the end of 2020. The Company has submitted an NDA for Plinabulin for the CIN indication to the NMPA on a rolling basis in Q1 2020.
About Chemotherapy-Induced Neutropenia (CIN)CIN is a common side effect in cancer patients undergoing treatment that involves the destruction of a type of white blood cell, the neutrophil, which is a patients first line of defense against infections. Patients with Grade 4 (severe) neutropenia have an abnormally low concentration of neutrophils, which may lead to infections, hospitalization and death.
G-CSFs are the current standard of care for CIN prevention. However, G-CSFs have limitations in reducing Grade 4 neutropenia with high-risk chemotherapy. Neutropenia, if severe enough, may cause doctors to lower target doses of chemotherapy, end therapy early and / or delay chemotherapy cycles, each of which has a negative effect on long-term outcomes of cancer care.
Despite these limitations annual global use of G-CSFs is more than 4.3 million cycles per year (CPY). The U.S. (1.3 million CPY) and China (1.6 million CPY) account for more than two-thirds of the global CIN market. Plinabulins demonstrated clinical profile in combination with G-CSFs has the potential to build on this existing base and improve the standard of care for patients and practitioners.
About PlinabulinPlinabulin, BeyondSprings lead asset, is a differentiated immune and stem cell modulator. Plinabulin is currently in late-stage clinical development to increase overall survival in cancer patients, as well as to alleviate chemotherapy-induced neutropenia (CIN). The durable anticancer benefits of Plinabulin have been associated with its effect as a potent antigen-presenting cell (APC) inducer (through dendritic cell maturation) and T-cell activation (Chem and Cell Reports, 2019). Plinabulins CIN data highlights the ability to boost the number of hematopoietic stem / progenitor cells (HSPCs), or lineage-/cKit+/Sca1+ (LSK) cells in mice. Effects on HSPCs could explain the ability of Plinabulin to not only treat CIN but also to reduce chemotherapy-induced thrombocytopenia and increase circulating CD34+ cells in patients.
About Plinabulin in CIN StudyThe PROTECTIVE-1 (Study 105) and PROTECTIVE-2 (Study 106) trials are both multicenter, double-blind, active controlled Phase 3 trials to support Plinabulins broad application in preventing CIN: Plinabulin for concurrent administration with myelosuppressive chemotherapy regimens in patients with non-myeloid malignancies for the presentation of chemotherapy-induced neutropenia (CIN).
PROTECTIVE-1 (Study 105)This study was designed to evaluate the safety and efficacy in non-small cell lung cancer (NSCLC), breast cancer and prostate cancer patients with risk factors, treated with docetaxel (Day 1 dose) in a 21-day cycle with a single dose of Plinabulin (40mg, Day 1 dose) versus a single dose of Neulasta (6mg, Day 2). Docetaxel is one example of an intermediate-risk chemotherapy. This is a non-inferiority study in CIN efficacy comparing Plinabulin and Neulasta in high-risk patients (intermediate chemotherapy, plus one or more additional risk factor). Study 105 Phase 3 interim data had achieved statistical significance based on the primary endpoint of the Duration of Severe Neutropenia (DSN) in the first cycle.
PROTECTIVE-2 (Study 106)This study was designed to evaluate the safety and efficacy in breast cancer, treated with docetaxel, doxorubicin and cyclophosphamide (TAC, Day 1 dose) in a 21-day cycle with Plinabulin (40 mg, Day 1 dose) in combination with Neulasta (6 mg, Day 2 dose) versus a single dose of Neulasta (6 mg, Day 2 dose) alone. TAC is an example of high-risk chemotherapy. Plinabulin and G-CSFs have complementary mechanisms in preventing chemotherapy-induced neutropenia (CIN). This is a superiority study in CIN efficacy in the rate of Grade 4 neutropenia prevention (primary endpoint), comparing the combination head-to-head against Neulasta, and is currently enrolling. Literature shows that the Grade 4 neutropenia rate for TAC and Neulasta at 6 mg is 83 to 93 percent, which presents severe unmet medical needs.
Covance is the clinical contract research organization (CRO) for patient recruitment and monitoring of global sites for this study. The CIN studies are conducted in over 60 clinical centers in the U.S., China and Europe. In addition, Absolute Neutrophil Count (ANC) data, which is used to calculate these endpoints, was obtained through central laboratory assessments by Covance Bioanalytical Methods using standardized and validated analytical tests.
About BeyondSpringHeadquartered in New York, BeyondSpring is a global, clinical-stage biopharmaceutical company focused on developing innovative immuno-oncology cancer therapies to improve clinical outcomes for patients with high unmet medical needs. BeyondSprings first-in-class lead immune asset, Plinabulin, is a potent antigen-presenting cell (APC) inducer. It is currently in two Phase 3 clinical trials for two severely unmet medical needs indications: one is for the prevention of chemotherapy-induced neutropenia (CIN), the most frequent cause for a chemotherapy regimen doses decrease, delay, downgrade or discontinuation, which can lead to suboptimal clinical outcomes. The other is for non-small cell lung cancer (NSCLC) treatment in EGFR wild-type patients. As a pipeline drug, Plinabulin is in various I/O combination studies to boost PD-1 / PD-L1 antibody anti-cancer effects. In addition to Plinabulin, BeyondSprings extensive pipeline includes three pre-clinical immuno-oncology assets and a drug discovery platform dubbed molecular glue that uses the protein degradation pathway.
Cautionary Note Regarding Forward-Looking StatementsThis press release includes forward-looking statements that are not historical facts. Words such as "will," "expect," "anticipate," "plan," "believe," "design," "may," "future," "estimate," "predict," "objective," "goal," or variations thereof and variations of such words and similar expressions are intended to identify such forward-looking statements. Forward-looking statements are based on BeyondSpring's current knowledge and its present beliefs and expectations regarding possible future events and are subject to risks, uncertainties and assumptions. Actual results and the timing of events could differ materially from those anticipated in these forward-looking statements as a result of several factors including, but not limited to, difficulties raising the anticipated amount needed to finance the Company's future operations on terms acceptable to the Company, if at all, unexpected results of clinical trials, delays or denial in regulatory approval process, results that do not meet our expectations regarding the potential safety, the ultimate efficacy or clinical utility of our product candidates, increased competition in the market, and other risks described in BeyondSprings most recent Form 20-F on file with the U.S. Securities and Exchange Commission. All forward-looking statements made herein speak only as of the date of this release and BeyondSpring undertakes no obligation to update publicly such forward-looking statements to reflect subsequent events or circumstances, except as otherwise required by law.
Media ContactsCaitlin Kasunich / Raquel ConaKCSA Strategic Communicationsckasunich@kcsa.com / rcona@kcsa.com
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