Genprex Provides Clinical and Corporate Update for Second Quarter 2018

On August 15, 2018 Genprex, Inc. (NASDAQ:GNPX), a clinical stage gene therapy company developing a new approach to treating cancer based upon a novel proprietary technology platform, reported a clinical and corporate update, and the filing of quarterly results for the second quarter ended June 30, 2018 on Form 10-Q with the Securities and Exchange Commission (Press release, Genprex, AUG 15, 2018, View Source [SID1234528893]).

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Rodney Varner, Chairman and CEO, remarked, "We have made significant progress in recent months to advance the development of Oncoprex for treatment of non-small cell lung cancer (NSCLC), including engaging collaborators with expertise and other resources necessary for important pre-clinical and clinical services. We also obtained an additional $10 million in capital, which provides additional financial resources to position the Company to achieve its critical milestones in its path toward developing and commercializing Oncoprex. "

Julien L. Pham, MD, MPH, President and Chief Operating Officer, stated, "We are moving toward resuming enrollment in the Phase I/II clinical evaluating the combination of Oncoprex and erlotinib (Tarceva) for the treatment of Stage IV non-small cell lung cancer (NSCLC), adding an additional preclinical trial to study Oncoprex in combination with immunotherapies, and progressing with manufacturing scale-up."

Clinical Development Highlights (May 2018 to present)

Selected Accenture to provide clinical data management services to help accelerate the clinical development of Genprex’s lead drug candidate, Oncoprex.
Entered an agreement to use WIRB-Copernicus Group (WCG) to provide site selection and feasibility services, including Institutional Review Board (IRB) and Institutional Biosafety Committee (IBC) oversight for new clinical trial sites that Genprex anticipates adding to participate in its Phase I/II clinical trial evaluating the combination of OncoprexTM and erlotinib (Tarceva) in NSCLC.
Selected 4Clinics as a CRO to provide clinical and regulatory support for the clinical development program in the form of biostatistics, statistical programming and analysis, as well as medical and scientific writing for the Phase I/II clinical trial.

Entered an agreement with The University of Texas MD Anderson Center under which Genprex is sponsoring a pre-clinical study intended to develop a novel therapeutic approach for the treatment of cancer using a combination of the multifactorial tumor suppressor gene TUSC2 and immunotherapy, including the immune checkpoint inhibitors anti-PD1 and/or anti CTLA-4. This study will include the identification of biomarkers to predict the response to TUSC2-immunotherapy combinations.
Amended its agreement with The University of Texas MD Anderson Cancer Center to resume patient enrollment in its Phase I/II trial evaluating the combination of Oncoprex and erlotinib (Tarceva) for the treatment of Stage IV non-small cell lung cancer (NSCLC).
Corporate Update

Entered an agreement with the University of Texas at Austin Dell Medical School to establish executive offices at the school’s Health Discovery Building, joining the WorkSpaces @ Texas Health CoLab. WorkSpaces @ Texas Health CoLab is designed to identify and support people and companies that share Dell Medical School’s commitment to improving health outcomes to patients and reducing healthcare costs.
Established offices in Cambridge, MA, where Dr. Julien Pham, President and COO will oversee the clinical development of Genprex’s lead drug candidate, Oncoprex.
Completed a $10 million private placement.
Forward Looking Statements

Statements contained in this press release that are not statements of historical facts are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Because these statements are subject to risks and uncertainties, the actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include, but are not limited to, statements about Genprex’s business plans, statements about the timing and success of the Company’s existing and planned clinical trials, statements about the development of the Company’s current and potential future product candidates, statements about the Company’s plans to seek regulatory approval of its product candidates, and statements about the services the Company expects to receive from its development partners and the effect of those services on the development of Oncoprex. Risks that contribute to the uncertain nature of the forward-looking statements include: the success, cost and timing of the Company’s product candidate development activities and current and planned clinical trials; the Company’s ability to execute on its strategy; regulatory developments in the United States and foreign countries; the Company’s estimates regarding expenses, future revenue and capital requirements; and the ability of the Company’s development partners to provide services to the Company and the Company’s ability to utilize those services, and the ability of those services to influence the development of Oncoprex. These and other risks and uncertainties are described more fully under the caption "Risk Factors" and elsewhere in Genprex’s filings and reports with the United States Securities and Exchange Commission. All forward-looking statements contained in this press release speak only as of the date on which they were made. Genprex does not undertake any obligation to update these statements to reflect any events that occur or facts that exist after the date on which the statements were made.

CEL-SCI Reports Recent Data Review by the Independent Data Monitoring Committee for Its Pivotal Phase 3 Head and Neck Cancer Study

On August 15, 2018 CEL-SCI Corporation (NYSE American: CVM) reported that the Independent Data Monitoring Committee (IDMC) for the Company’s pivotal Phase 3 head and neck cancer study of its investigational immunotherapy Multikine* (Leukocyte Interleukin, Injection) has completed its recent review of the Phase 3 study data (Press release, Cel-Sci, AUG 15, 2018, View Source [SID1234528894]). The data from all 928 enrolled patients were provided to the IDMC by the clinical research organization (CRO) responsible for data management of this Phase 3 study.

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The IDMC made the following recommendation:

The IDMC recommendation is to continue the trial until the appropriate number of events have occurred.
IDMCs are committees commonly used by sponsors of clinical trials to protect the interests of the patients and the integrity of the study data in ongoing trials, especially when the trials involve patients with life threatening diseases, and when, as in cancer clinical trials, they extend over long periods of time.

Agenus Receives Second Milestone Payment from Merck

On August 15, 2018 Agenus Inc. (NASDAQ: AGEN), an immuno-oncology (I-O) company with a pipeline of immune checkpoint antibodies, cancer vaccines and adoptive cell therapies1, reported that Merck, known as MSD outside the United States and Canada, initiated a Phase I clinical trial of an undisclosed antibody candidate discovered by Agenus, under the two companies license and research collaboration (Press release, Agenus, AUG 15, 2018, View Source [SID1234528898]). Based on this milestone and under the terms of the agreement, Agenus received a $4 million milestone payment and is entitled to receive up to an additional $95 million in success milestones from Merck.

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"We continue to deliver on all milestones with our existing partners." said Garo H. Armen, Ph.D., Chairman and CEO of Agenus. "This is yet another validation of our antibody discovery platform and expertise in the field and adds to our successes in delivering first in class discoveries to patients. Notably, besides this, we also have two other partnered programs advancing to the clinic this year, each triggering additional milestone payments to Agenus."

This milestone is the second under the collaboration, originally announced in April 2014. According to the terms of the agreement, Merck is responsible for all product development expenses for the antibody candidate, and Agenus is eligible to receive up to an additional $95 million in milestone payments, as well as royalties on worldwide product sales.

Third Dosing Cohort to be initiated in MAGE-A4 SPEAR T-cell Basket Study After Favorable Review of Safety from One Billion Cell Dose Cohort

On August 15, 2018 Adaptimmune Therapeutics plc (Nasdaq:ADAP), a leader in T-cell therapy to treat cancer, reported a favorable review of safety data from the second dose cohort of patients who received one billion transduced SPEAR T‑cells targeting MAGE-A4 in the ongoing basket study in nine solid tumor indications (Press release, Adaptimmune, AUG 15, 2018, View Source;p=RssLanding&cat=news&id=2363723 [SID1234528864]). Based on these data, the Safety Review Committee (SRC) has endorsed dose escalation to the third dose cohort of 1.2 to 6 billion cells.

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To date, three patients have received 100 million transduced MAGE‑A4 SPEAR T-cells in the first dose cohort, and three patients received one billion cells in the second cohort. No evidence of toxicity related to off-target binding or alloreactivity has been reported. Most adverse events were consistent with those typically experienced by cancer patients undergoing cytotoxic chemotherapy or other cancer immunotherapies.

"In Cohorts 1 and 2, we have observed cell expansion consistent with the doses administered. We are initiating dosing with 1.2 to 6 billion cells in the MAGE-A10 and MAGE-A4 studies. We have a number of patients whose cell products have been manufactured and these cells can be used when patients are ready for therapy. We remain on track to deliver initial data on response assessments from these cohorts during the second half of 2018," said Rafael Amado, Adaptimmune’s President of Research & Development.

Overview of Study Design MAGE-A4 Pilot Study

This is a first-in-human, open-label study utilizing a modified 3+3 design in up to 36 patients with escalating doses of 100 million (Cohort 1), 1 billion (Cohort 2), and 1.2‑6 billion (Cohort 3) transduced SPEAR T-cells to evaluate safety, including dose limiting toxicities (DLTs) followed by a possible expansion phase with doses of up to 10 billion SPEAR T-cells
This active trial is being evaluated across nine solid tumor indications including urothelial, melanoma, head and neck, ovarian, NSCLC, esophageal, and gastric cancers; as well as synovial sarcoma and myxoid/round cell liposarcoma (MRCLS)
Patients are screened under a separate protocol (Screening Protocol: NCT02636855) to identify those who have the relevant HLA-A*02 alleles and MAGE-A4 tumor expression
There was a 21-day stagger between patients in Cohort 1, with this stagger dropping to 7 days in Cohorts 2, and 3. There is no pre-determined stagger in the potential expansion phase
Cohorts 1-3 were intended to enroll 3 patients each with an expansion to 6 patients if DLTs were observed
The expansion phase can enroll up to 30 patients
The lymphodepletion regimen are:
Cohorts 1 and 2 – fludarabine (flu) (30mg/m2/day) and cyclophosphamide (cy) (600 mg/m2/day) for 3 days
Cohorts 3 and expansion phase – flu (30mg/m2/day) for 4 days and cy (600 mg/m2/day) for 3 days
Efficacy is assessed by overall response rate, time to response, duration of response, progression-free survival, and overall survival at weeks 4, 8, and 12, month 6, and then every 3 months until confirmation of disease progression
Adaptimmune’s Pipeline
Adaptimmune’s proprietary technology enables the Company to consistently generate affinity enhanced T-cell receptors (TCRs) that address intracellular targets on solid tumors that may not be accessible to certain other immunotherapy treatment modalities. Adaptimmune has three wholly owned SPEAR T‑cells in active clinical trials, with additional first and next generation SPEAR T‑cells being evaluated by means of Adaptimmune’s proprietary preclinical testing platform in advance of proceeding to the clinic.

Adaptimmune’s wholly owned SPEAR T-cells targeting MAGE‑A10, MAGE‑A4, and AFP are being evaluated in four active clinical trials across ten solid tumor indications:

MAGE-A10: Two active trials, one in NSCLC, and a triple tumor study in urothelial (bladder), melanoma, and head & neck cancers
MAGE-A4: One active trial across nine solid tumor indications including urothelial, melanoma, head and neck, ovarian, NSCLC, esophageal, and gastric cancers; as well as synovial sarcoma and myxoid/round cell liposarcoma (MRCLS)
AFP: One active study in hepatocellular (liver) cancer
Patients are receiving doses of 1.2-6 billion SPEAR T-cells across all the MAGE-A4 and MAGE‑A10 trials as there has been no evidence of off-target toxicity, to date, which has supported dose escalation

Stemline Therapeutics to Present at the 2018 Wedbush PacGrow Healthcare Conference

On August 14, 2018 Stemline Therapeutics, Inc. (Nasdaq: STML), a clinical-stage biopharmaceutical company developing novel oncology therapeutics, reported that Ivan Bergstein, M.D., Stemline’s CEO, will present at the 2018 Wedbush PacGrow Healthcare Conference on Wednesday, August 15, 2018 at 10:55 AM ET at the Parker New York Hotel (Press release, Stemline Therapeutics, AUG 14, 2018, View Source [SID1234528882]). A live webcast of the presentation can be viewed on the company’s website at www.stemline.com.

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About ELZONRISTM (tagraxofusp; SL-401)
ELZONRISTM (tagraxofusp; SL-401) is a novel targeted investigational therapy directed to CD123, a cell surface receptor expressed on a range of malignancies. ELZONRIS successfully completed a pivotal trial in patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN), and a Biologics License Application (BLA) in this indication has been accepted for filing and been granted Priority Review by the U.S. Food and Drug Administration (FDA). ELZONRIS has also been granted Breakthrough Therapy Designation (BTD) and Orphan Drug Designation by the FDA. ELZONRIS is also being evaluated in clinical trials in additional indications including chronic myelomonocytic leukemia (CMML), myelofibrosis (MF), and others.

About BPDCN
Please visit the BPDCN disease awareness website: www.bpdcninfo.com.

About Stemline Therapeutics