On December 2, 2016 Surface Oncology, an immuno-oncology company developing next-generation immunotherapies that target the tumor microenvironment, reported that it will present preclinical data on its CD47 program at the 58th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting (Press release, Surface Oncology, DEC 2, 2016, View Source [SID1234516902]). The data demonstrate that SRF231, a fully human CD47 antibody, induces robust tumor cell phagocytosis and clearance, both alone and in combination with existing standard of care treatment.

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"These data highlight the strong anti-tumor activity of SRF231 in hematological disease models," said Vito Palombella, PhD, Chief Scientific Officer at Surface Oncology, "and further suggest that SRF231 has the potential to be the best-in-class CD47 antibody to help patients with a wide range of cancers."

CD47 is an important immune escape mechanism exploited by multiple tumor types, making it a target with broad therapeutic potential. CD47 acts as a macrophage checkpoint or "don’t eat me" signal that prevents cells from being eliminated by a macrophage-mediated process called phagocytosis.

The data presented at ASH (Free ASH Whitepaper) demonstrate that SRF231 enhances tumor cell phagocytosis alone and in combination with opsonizing antibodies (e.g., anti-CD20 Ab). SRF231 also leads to profound tumor growth inhibition in models of multiple myeloma and non-Hodgkin’s lymphoma.

Previously, Surface presented data at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper)’s annual meeting demonstrating that SRF231 binds with high affinity to CD47, stimulates phagocytosis of cancer cells in vitro, and has potent anti-tumor activity in multiple in vivo disease models. These data also demonstrate that SRF231 does not induce detectable hemagglutination or phagocytosis of red blood cells in vitro, a potentially important safety advantage. SRF231 is expected to enter clinical trials in 2017.

On December 2, 2016 Spectrum Pharmaceuticals (NasdaqGS: SPPI), a biotechnology company with fully integrated commercial and drug development operations with a primary focus in Hematology and Oncology, reported key presentations of clinical and scientific data related to its products at the 58th Annual Meeting of the American Society of Hematology (ASH) (Free ASH Whitepaper), being held in San Diego, California, from December 3-6, 2016 (Press release, Spectrum Pharmaceuticals, DEC 2, 2016, View Source [SID1234516892]).

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For more information about the ASH (Free ASH Whitepaper) annual meeting and for a complete list of abstracts, please refer to the conference website at View Source

The following are key PTCL-related abstracts being presented at the ASH (Free ASH Whitepaper) meeting:

Abstract # Type Title First Author
Date/Time
Location
4149 Poster Case Match Control Analysis of Propel Reveals Survival Advantage for Patients with Relapsed/Refractory (R/R) Peripheral T-Cell Lymphoma (PTCL) Treated with Pralatrexate O’Connor
Monday, Dec 5,
6:00 PM-8:00 PM
Hall GH
4150 Poster Differential Outcome of Patients with Primary Refractory Vs. Relapsed Peripheral T-Cell Lymphoma: Analysis from a Prospective Multicenter US Cohort Study Lansigan
Monday, Dec 5,
6:00 PM-8:00 PM
Hall GH
1824 Poster The Pralatrexate – Romidepsin Doublet: A Well Tolerated and Highly Effective Combination for Patients with Relapsed or Refractory Peripheral T-Cell Lymphoma Amengual
Saturday, Dec 3,
5:30 PM-7:30 PM
Hall GH

The following key ZEVALIN (ibritumomab tiuxetan)-related abstract will be presented at the ASH (Free ASH Whitepaper) conference:

Abstract # Type Title First Author Location
1793 Poster Short Course of Bendamustine and Rituximab Followed By 90Y-Ibritumomab Tiuxetan in Patients with Chemotherapy-Naive Follicular Lymphoma (FOL-BRITe): Final Report of Response Rates and Progression Free Survival Costa
Saturday, Dec 3,
5:30 PM-7:30 PM
Hall GH

On December 2, 2016 TG Therapeutics, Inc. (NASDAQ:TGTX), reported the schedule of data presentations for their lead compounds, TGR-1202, the Company’s once-daily PI3K delta inhibitor, and TG-1101 (ublituximab), the Company’s novel glycoengineered anti-CD20 monoclonal antibody, at the upcoming 58th American Society of Hematology (ASH) (Free ASH Whitepaper) annual meeting, being held December 3-6, 2016, at the San Diego Convention Center in San Diego, California (Press release, TG Therapeutics, DEC 2, 2016, View Source [SID1234516891]).

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Presentations at the ASH (Free ASH Whitepaper) 2016 meeting include the following:

Oral Presentations:

Title: Silencing c-Myc Translation as a Therapeutic Strategy through Targeting PI3K Delta and CK1 Epsilon in Hematological Malignancies
Abstract Number: 291
Oral Session: 625. Lymphoma: Pre-Clinical—Chemotherapy and Biologic Agents: Cell Signaling
Date and Time: Sunday, December 4, 2016; 7:30 AM – 9:00 AM PT
Presentation Time: 8:00 AM PT
Location: San Diego Convention Center, Room 5AB
Presenter: Changchun (George) Deng, MD, PhD, Columbia University, New York, NY
Title: TGR-1202 in Combination with Ibrutinib in Patients with Relapsed or Refractory CLL or MCL: Preliminary Results of a Multicenter Phase I/Ib Study
Abstract Number: 641
Oral Session: 642. CLL: Therapy, excluding Transplantation: Targeted Therapy: Novel Agents and Combinations
Date and Time: Monday, December 5, 2016; 7:00 AM – 8:30 AM PT
Presentation Time: 8:00 AM PT
Location: San Diego Convention Center, Room 5AB
Presenter: Matthew S. Davids, MD, Dana Farber Cancer Institute, Boston, MA

Title: Preliminary Results from a Phase I Dose Escalation Trial of Ruxolitinib and the PI3Kδ Inhibitor TGR-1202 in Myelofibrosis
Abstract Number: 1125
Oral Session: 634. Myeloproliferative Syndromes: Clinical: Clinical Trials with JAK Inhibitors
Date and Time: Monday, December 5, 2016; 4:30 PM – 6:00 PM PT
Presentation Time: 5:00 PM PT
Location: Marriott Marquis San Diego Marina, Pacific Ballroom Salons 15-17
Presenter: Tamara Kay Moyo, MD, PhD, Vanderbilt-Ingram Cancer Center, Nashville, TN
Posters Presentations:

Title: Modulation of T Cell Compartment in a Preclinical CLL Murine Model By a Selective PI3K Delta Inhibitor, TGR-1202
Abstract Number: 3236
Session: 642. CLL: Therapy, excluding Transplantation: Poster II
Date and Time: Sunday, December 4, 2016 6:00 PM – 8:00 PM PT
Location: San Diego Convention Center, Hall GH
Presenter: Kamira K. Maharaj, BS, Moffit Cancer Center, Tampa, FL

Title: Combination of Ublituximab, TGR-1202, and Bendamustine Demonstrates Significant Activity in Patients with Advanced DLBCL and Follicular Lymphoma
Abstract Number: 4197
Session: 626. Aggressive Lymphoma (Diffuse Large B-Cell and Other Aggressive B-Cell Non-Hodgkin Lymphomas)—Results from Prospective Clinical Trials: Poster III
Date and Time: Monday, December 5, 2016; 6:00 PM-8:00 PM PT
Location: San Diego Convention Center, Hall GH
Presenter: Matthew A. Lunning, DO, University of Nebraska Medical Center, Omaha, NE

Title: A Phase I Trial of TGR-1202, a Next Generation Once-Daily PI3Kδ Inhibitor, in Combination with Brentuximab Vedotin, in Patients with Relapsed/Refractory Hodgkins Lymphoma
Abstract Number: 4146
Session: 624. Hodgkin Lymphoma and T/NK Cell Lymphoma—Clinical Studies: Poster III
Date and Time: Monday, December 5, 2016; 6:00 PM-8:00 PM PT
Location: San Diego Convention Center, Hall GH
Presenter: Rod Ramchandren, MD, Karmanos Cancer Center, Detroit, MI
A copy of the above referenced abstracts can be viewed online through the ASH (Free ASH Whitepaper) meeting website at www.hematology.org. Following each presentation, the data presented will be available on the Publications page of the Company’s website at www.tgtherapeutics.com.

On December 2, 2016 Stemline Therapeutics, Inc. (Nasdaq:STML) reported that SL-401, a novel targeted therapeutic directed to CD123, will be featured in seven presentations, including three oral presentations, at the 2016 American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting, being held December 3-6, 2016 at the San Diego Convention Center in San Diego, CA (Press release, Stemline Therapeutics, DEC 2, 2016, View Source [SID1234516890]).

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Investigators will deliver an oral presentation on updated clinical data from the SL-401 Phase 2 trial in blastic plasmacytoid dendritic cell neoplasm (BPDCN). Additional presentations include early clinical data from ongoing SL-401 clinical trials in patients with acute myeloid leukemia (AML) in remission with high relapse risk (selected for oral presentation), high-risk myeloproliferative neoplasms (MPN), and relapsed/refractory multiple myeloma. Preclinical data to be presented include an oral presentation of SL-401 activity against cancer stem cells (CSCs) of AML and myelodysplastic syndrome (MDS), as well as SL-401 activity against CSCs of myeloma and SL-401 efficacy in combination with SL-801, a novel XPO1 inhibitor, against myeloma and other malignancies.

Details on the presentations are listed below. Additionally, presentations will be available on the Stemline website, Scientific Presentations tab, after their delivery.

Details on the presentations are as follows:

SL-401 – BPDCN (Clinical) – Oral Presentation
Title: Results from Phase 2 Trial Ongoing Expansion Stage of SL-401 in Patients with Blastic Plasmacytoid Dendritic Cell Neoplasm (BPDCN)
Presenter: Naveen Pemmaraju, MD; MD Anderson Cancer Center
Abstract: 342
Session: 613. Acute Myeloid Leukemia: Clinical Studies: Optimizing Current AML Therapy
Date/Time: Sunday, December 4, 2016 10:45 AM PT
Location: Marriott Marquis San Diego Marina, Pacific Ballroom

SL-401 – AML in CR with MRD (Clinical) – Oral Presentation
Title: Results from Ongoing Phase 2 Trial of SL-401 As Consolidation Therapy in Patients with Acute Myeloid Leukemia (AML) in Remission with High Relapse Risk Including Minimal Residual Disease (MRD)
Presenter: Andrew Lane, MD, PhD; Dana-Farber Cancer Institute
Abstract: 215
Session: 613. Acute Myeloid Leukemia: Clinical Studies: Innovations in Induction Therapy
Date/Time: Saturday, December 3, 2016 5:00 PM PT
Location: Marriott Marquis San Diego Marina, San Diego Ballroom AB

SL-401 – Myeloproliferative neoplasms (Clinical)
Title: Results from Ongoing Phase 2 Trial of SL-401 in Patients with Advanced, High-Risk Myeloproliferative Neoplasms Including Chronic Myelomonocytic Leukemia
Presenter: Mrinal Patnaik, MBBS; Mayo Clinic
Abstract: 4245
Session: 634. Myeloproliferative Syndromes: Clinical: Poster III
Date/Time: Monday, December 5, 2016 6:00 PM – 8:00 PM PT
Location: San Diego Convention Center, Hall GH

SL-401 — Multiple myeloma (Clinical)
Title: Results from Ongoing Phase 1/2 Trial of SL-401 in Combination with Pomalidomide and Dexamethasone in Relapsed or Refractory Multiple Myeloma
Presenter: Myo Htut, MD; City of Hope
Abstract: 5696
Date/Time: Thursday, December 1, 2016 publication release
Location: Published online on ASH (Free ASH Whitepaper) abstract website

SL-401 – AML and MDS cancer stem cells – Oral Presentation
Title: SL-401 Mediates Potent Cytotoxicity Against CD123+ AML and MDS with Excess Blasts and Demonstrates Therapeutic Benefit in PDX Model
Presenter: Rajeswaran Mani, PhD; Ohio State University
Abstract: 580
Session: 604. Molecular Pharmacology and Drug Resistance in Myeloid Diseases: Targeting Leukemia-Initiating Cells
Date/Time: Monday, December 5, 2016 ?7:45 AM PT
Location: San Diego Convention Center, Room 24

SL-401 in combination with SL-801 — Multiple myeloma and other malignancies
Title: SL-401, a Targeted Therapy Directed to the Interleukin-3 Receptor (CD123), and SL-801, a Reversible Inhibitor of Exportin-1 (XPO1), Display Synergistic Anti-Tumor Activity Against Hematologic Malignancies in Vitro
Presenter: Janice Chen, PhD; Stemline
Abstract: 4724
Session: 802. Chemical Biology and Experimental Therapeutics: Poster III
Date/Time: Monday, December 5, 2016 6:00 PM – 8:00 PM PT
Location: San Diego Convention Center, Hall GH

SL-401 – Multiple myeloma
Title: SL-401, a Novel IL-3Rα/CD123—Directed Agent Targets Stem-like Cells in Multiple Myeloma
Presenter: Arghya Ray, PhD; Dana-Farber Cancer Institute
Abstract: 4463
Session: 652. Myeloma: Pathophysiology and Pre-Clinical Studies, excluding Therapy: Poster III
Date/Time: Monday, December 5, 2016 6:00 PM – 8:00 PM PT
Location: San Diego Convention Center, Hall GH

On December 2, 2016 Ignyta, Inc. (Nasdaq: RXDX), a biotechnology company focused on precision medicine in oncology, reported data examining the combination of entrectinib and trametinib in overcoming resistance to TRK inhibition during a late-breaking oral plenary presentation (during the Exceptional Response and Expected Resistance Session) at the 2016 EORTC-NCI-AACR (Free EORTC-NCI-AACR Whitepaper) (ENA) Molecular Targets and Cancer Therapeutics Symposium in Munich, Germany (Press release, Ignyta, DEC 2, 2016, View Source [SID1234516880]). Entrectinib is the company’s orally available, CNS-penetrant tyrosine kinase inhibitor, targeting tumors that harbor TRK, ROS1 or ALK fusions, and is currently in a registration-enabling Phase 2 clinical trial known as STARTRK-2.

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"This presentation is a great example of the successful translation of preclinical observations into clinical practice for the benefit of patients," said Alexander Drilon, M.D., of Memorial Sloan Kettering Cancer Center, who presented the data on behalf of the abstract authors at ENA. "The patient experience described in today’s presentation highlights the ability of entrectinib, in combination with a MEK inhibitor, to overcome potential treatment resistance that has been described for TRK inhibitors."

Data presented describe results from a single patient protocol designed to allow co-administration of entrectinib and trametinib, a commercially-approved MEK inhibitor. The patient, diagnosed with mammary analog secretory carcinoma (or MASC) with an NTRK3 fusion—~90-100% of MASC cases have TRK fusions—and previously treated with multiple surgeries, radiation, vinorelbine, carboplatin/paclitaxel, doxorubicin and crizotinib, experienced a rapid and confirmed partial response (89% reduction) with single-agent entrectinib treatment and remained on therapy for nine months. However, during the course of therapy, the patient’s tumor developed a solvent front point mutation, the predicted mechanism of resistance to first generation TRK inhibitors and analogous to a common mechanism of resistance for other TKIs against other fusion targets.

Based on both in vitro and in vivo data developed by Ignyta, indicating that entrectinib plus a MEK inhibitor could overcome such TRK inhibitor resistance, a single patient protocol was created, reviewed by the FDA and implemented to allow for dose escalation of entrectinib in combination with trametinib. While on the combination, all drug-related adverse events (AEs) were grade 1 or 2, and no new AEs specific to the combination were encountered. The patient achieved a 22% reduction in tumor volume and remained on the combination regimen for nearly seven months.

"This single-patient protocol is an excellent example of our vision at Ignyta, leveraging the molecular alterations responsible for cancer’s growth to design rational treatment strategies for patients in their fight against cancer," said Jonathan Lim, M.D., Chairman and CEO of Ignyta. "In addition to STARTRK-2, our global Phase 2 basket trial of entrectinib in multiple tumor histologies and STARTRK-NG, our Phase 1/1b trial of entrectinib in pediatric patients with solid tumors, we look forward to further exploration of entrectinib in combination with a MEK inhibitor in a Phase 1/1b clinical trial anticipated to initiate in the second half of 2017."