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10-Q – Quarterly report [Sections 13 or 15(d)]

(Filing, 10-Q, Five Prime Therapeutics, NOV 5, 2015, View Source [SID:1234508018])

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10-Q – Quarterly report [Sections 13 or 15(d)]

(Filing, 10-Q, Celsion, NOV 5, 2015, View Source [SID:1234508016])

10-Q – Quarterly report [Sections 13 or 15(d)]

(Filing, 10-Q, Provectus Pharmaceuticals, NOV 5, 2015, View Source [SID:1234507974])

CytomX and MD Anderson Cancer Center Enter Into Strategic Collaboration for Probody-Enabled CAR-NK Cell Therapies

On November 5, 2015 CytomX Therapeutics (Nasdaq: CTMX), a biopharmaceutical company developing investigational Probody therapeutics for the treatment of cancer, reported that it has entered into a collaboration with The University of Texas MD Anderson Cancer Center to research Probody-enabled chimeric antigen receptor natural killer (CAR-NK) cell therapies, to be known as ProCAR-NK cell therapies (Press release, CytomX Therapeutics, NOV 5, 2015, View Source;p=irol-newsArticle&ID=2107612 [SID:1234511334]).

MD Anderson will leverage its expertise in developing allogeneic umbilical cord blood and peripheral blood derived NK-cell therapies and combine it with CytomX’s Probody technology to address new targets for this novel modality in cancer immunotherapy. Designed for more precise binding to tumors and reduced binding to healthy tissue, ProCAR-NK cell therapies will be created against targets for which safety and toxicity have traditionally been limiting factors for CAR cell therapies. Under the collaboration, CytomX and MD Anderson will develop ProCAR-NK cell therapies against multiple targets, and CytomX will have the option to license therapeutics that demonstrate preclinical proof of concept for clinical and commercial development.

From MD Anderson, the collaboration will be led by Katy Rezvani, M.D., Ph.D., professor, department of Stem Cell Transplantation and Cellular Therapy; and Elizabeth Shpall, M.D., professor, department of Stem Cell Transplantation and Cellular Therapy. Rezvani has conducted more than a decade of research in NK-cell therapies.

"Our researchers see distinct promise in NK cells, as their role in the innate immune system enables immediate tumor killing effect compared to T-cells. In addition, CAR-NK cells have the opportunity to be off the shelf therapies as opposed to autologous CAR-T cell therapies," said Rezvani. "By combining these advantages of CAR-NK cell therapies with the added targeting of this novel technology, we believe that we can create therapies that realize the full potential of the therapeutic class."

Therapeutics developed with CytomX’s Probody platform have a mask linked to the antibody’s antigen-binding site designed to avoid the binding of antigens on healthy tissue. The mask is cleaved by proteases found in the tumor microenvironment, allowing Probody therapeutic to selectively bind to tumor cells. This binding selectivity allows CytomX to potentially expand the therapeutic window for both existing and new antigen targets. CytomX’s pipeline of wholly owned and partnered programs includes development-stage Probody cancer immunotherapies, Probody drug conjugates and Probody bispecifics.

"The progress we continue to make within our pipeline has shown that Probody therapies offer important advantages over traditional antibodies, with the potential for creating safe and effective cancer immunotherapies and antibody drug conjugates," said Sean McCarthy, D.Phil., chief executive officer of CytomX. "This collaboration will allow us to draw on world-class research from MD Anderson in the field of CAR-NK cell therapies and extend our platform to this exciting modality."

NK cells are cytotoxic lymphocytes that comprise a central component of the innate immune system. When these cells are engineered to express CARs that target proteins found on cancer cells, they demonstrate powerful anti-tumor responses. The resulting therapeutic class has potential advantages over CAR-T cells, including simpler manufacturing.

Calithera Announces Multiple Abstracts Selected for Presentation at the 57th American Society of Hematology Annual Meeting

On November 05, 2015 Calithera Biosciences, Inc. (Nasdaq:CALA), reported that four abstracts highlighting the potential of CB-839, the Company’s novel, orally bioavailable glutaminase inhibitor for the treatment of hematological malignancies, have been selected for presentation at the 57th American Society of Hematology (ASH) (Free ASH Whitepaper) annual meeting and exposition, taking place December 5-8, 2015, in Orlando, Florida (Press release, Calithera Biosciences, NOV 5, 2015, View Source;p=RssLanding&cat=news&id=2107378 [SID:1234508338]). Details for the presentations are as follows:

Metabolomic, Proteomic and Genomic Profiling Identifies Biomarkers of Sensitivity to Glutaminase
Abstract #1802
Andrew L. MacKinnon, Ph.D., Calithera Biosciences
Session Name: 652. Myeloma: Pathophysiology and Pre-Clinical Studies, excluding Therapy: Poster I
Saturday, December 5, 2015 at 5:30-7:30 PM ET
Orange County Convention Center, Hall A

Role of Glutamine in Metabolic and Epigenetic Reprogramming in AML
Abstract #2559
Juliana Velez Lujan, Ph.D., University of Texas MD Anderson Cancer Center
Session Name: 616. Acute Myeloid Leukemia: Novel Therapy, excluding Transplantation: Poster II
Sunday, December 6, 2015 at 6:00-8:00 PM ET
Orange County Convention Center, Hall A

Phase I Study of CB-839, a First-in-class, Orally Administered Small Molecule Inhibitor of Glutaminase in Patients With Relapsed/ Refractory Leukemia
Abstract #2566
Eunice S. Wang, M.D., Roswell Park Cancer Institute
Session Name: 616. Acute Myeloid Leukemia: Novel Therapy, excluding Transplantation: Poster II
Sunday, December 6, 2015 at 6:00-8:00 PM ET
Orange County Convention Center, Hall A

Phase I Study of CB-839, a First-in-class, Glutaminase Inhibitor in Patients With Multiple Myeloma and Lymphoma
Abstract #3059
Dan Vogl, M.D., University of Pennsylvania
Session Name: 653. Myeloma: Therapy, excluding Transplantation: Poster II
Sunday, December 6, 2015 at 6:00-8:00 PM ET
Orange County Convention Center, Hall A

The meeting abstracts can be viewed online through the ASH (Free ASH Whitepaper) website at www.hematology.org.