Xencor Regains ex-U.S. Commercial Rights to XmAb®13676, CD20 x CD3 Bispecific Antibody

On January 7, 2019 Xencor, Inc. (NASDAQ: XNCR), a clinical-stage biopharmaceutical company developing engineered monoclonal antibodies for the treatment of autoimmune disease, asthma and allergic disease and cancer, reported it will regain rights to develop and commercialize XmAb13676, a CD20 x CD3 bispecific antibody, from Novartis effective June 20, 2019, due to strategic pipeline reprioritization by Novartis (Press release, Xencor, JAN 7, 2019, View Source [SID1234532562]). Xencor granted Novartis co-development and ex-U.S. commercial rights in June 2016 through a collaboration and license agreement to develop and commercialize novel bispecific antibodies, including XmAb13676 and XmAb14045, and to access Xencor’s XmAb bispecific Fc and other Fc technologies. Currently XmAb13676 is being evaluated in an open-label Phase 1, multiple-dose, dose-escalation study to assess its safety, tolerability and preliminary anti-tumor activity in patients with B-cell malignancies, and initial data are expected in 2019.

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"We continue to work closely with Novartis across multiple programs in the collaboration, and both companies are eager to advance XmAb14045 in clinical development. Recently we presented encouraging early data from our Phase 1 study in patients with relapsed/refractory AML, observing multiple complete remissions on a weekly dosing schedule, and we continue to optimize dose in that study. Novartis also has internal XmAb preclinical bispecific programs progressing," said Bassil Dahiyat, Ph.D., president and chief executive officer at Xencor. "Xencor will continue to develop XmAb13676 as planned, and we believe its tuned potency holds potential for the treatment of patients with B-cell malignancies."

Under the terms of the collaboration agreement, Xencor and Novartis continue to share costs for the worldwide development of XmAb14045 with Xencor maintaining U.S. commercialization rights and Novartis having commercialization rights in the rest of the world, and worldwide development costs for XmAb13676 will be shared until June 2020. Novartis received worldwide rights to Xencor’s bispecific technology to develop and commercialize four additional targets selected by Novartis. Xencor is eligible to receive clinical, regulatory and sales milestone payments for successful programs, as well as tiered, low double-digit royalties for sales of XmAb14045 outside of the U.S. and mid single-digit tiered royalties for worldwide sales of the four proprietary Novartis bispecific molecules.

About XmAb13676

XmAb13676 is a tumor-targeted antibody that contains both a CD20 binding domain and a cytotoxic T-cell binding domain (CD3) in a Phase 1 clinical trial for the treatment of B-cell malignancies. An XmAb bispecific Fc domain serves as the scaffold for these two antigen binding domains and confers long circulating half-life, stability and ease of manufacture on XmAb13676. CD20 is highly expressed on B-cell tumors, including in chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL). Engagement of CD3 by XmAb13676 activates T cells for highly potent and targeted killing of CD20-expressing tumor cells.

About XmAb14045

XmAb14045 is a tumor-targeted antibody that contains both a CD123 binding domain and a cytotoxic T-cell binding domain (CD3) in a Phase 1 clinical trial for the treatment of acute myeloid leukemia (AML) and other CD123-expressing hematologic malignancies. An XmAb Bispecific Fc domain serves as the scaffold for these two antigen binding domains and confers long circulating half-life, stability and ease of manufacture on XmAb14045. CD123 is highly expressed on AML cells and leukemic stem cells, and it is associated with poorer prognosis in AML patients. Engagement of CD3 by XmAb14045 activates T cells for highly potent and targeted killing of CD123-expressing tumor cells.

Integral Molecular Enters Immuno-Oncology Target Discovery Collaboration with Daiichi Sankyo

On January 7, 2019 Integral Molecular, the industry leader in membrane protein solutions, reported that it has entered into a collaboration to discover new therapeutic targets in immuno-oncology (I-O) with Daiichi Sankyo Co., Ltd. Integral Molecular will use its Membrane Proteome Array (MPA) platform to identify novel membrane proteins that regulate the human immune system’s ability to recognize and destroy cancer cells (Press release, Integral Molecular, JAN 7, 2019, https://www.integralmolecular.com/integral-molecular-enters-immuno-oncology-target-discovery-collaboration-with-daiichi-sankyo/ [SID1234533985]). Daiichi Sankyo will use the identified I-O targets to develop new therapeutics. Specific financial terms of the agreement have not been disclosed.

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The MPA platform contains 5,300 different human membrane proteins, each individually expressed in live human cells. Each protein is screened for ligand binding and biological function using unfixed cells and flow cytometry, enabling high-sensitivity detection and high success rates. These features, particularly the ability to detect functional interactions in live cells, make the MPA ideally suited to the discovery of new therapeutic targets.

"By discovering new targets without preconceived biases, the MPA platform overcomes the disadvantages of current approaches for identifying novel immunomodulatory proteins," said Benjamin Doranz, President and CEO at Integral Molecular. "We have already discovered more than a dozen novel I-O interactions and confirmed that several of these interactions regulate T cells. We are looking forward to a successful collaboration with Daiichi Sankyo."

Aduro Biotech, Inc. Investor Presentation

On January 7, 2019 Aduro Biotech, Inc presented the corporate presentation (Presentation, Aduro Biotech, JAN 7, 2019, View Source [SID1234532498]).

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Mirati Announces Clinical Collaboration With Bristol-Myers Squibb For The Planned Phase 3 Trial In Non-Small Cell Lung Cancer To Evaluate Sitravatinib In Combination With Nivolumab (OPDIVO®)

On January 7, 2019, 2019 Mirati Therapeutics, Inc. (NASDAQ: MRTX) a clinical-stage targeted oncology company, reported a clinical collaboration with Bristol-Myers Squibb Company to evaluate the combination of sitravatinib and nivolumab (OPDIVO), in Mirati’s planned Phase 3 trial in second line non-small cell lung cancer (NSCLC) patients who have progressed following treatment with a platinum-based regimen and a checkpoint inhibitor (Press release, Mirati, JAN 7, 2019, View Source [SID1234532531]).

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The Phase 3 pivotal trial is expected to start in the first half of 2019 and will randomize patients to either the combination of sitravatinib with nivolumab or single-agent docetaxel. The trial will include an interim analysis of overall response rate (ORR) as the basis for potential accelerated approval. This interim analysis and the use of a docetaxel control arm follows guidance from Mirati’s FDA end of phase 2 meeting. The primary endpoint of the final analysis for the Phase 3 clinical trial will be overall survival.

"Our Phase 2 clinical trial of sitravatinib plus nivolumab in patients with checkpoint refractory NSCLC has shown promising activity and a well-tolerated safety profile," said Charles Baum, M.D., Ph.D., President and Chief Executive Officer of Mirati. "The trial is expected to result in a new drug application (NDA) for sitravatinib for the treatment of NSCLC patients whose tumors have progressed following treatment with a platinum containing regimen and a checkpoint inhibitor. This collaboration further validates the potential of sitravatinib and allows Mirati to invest in and expand the development of our clinical and pre-clinical programs."

Under the terms of the collaboration, Mirati will sponsor and fund the clinical trial and Bristol-Myers Squibb will provide nivolumab at no cost. Mirati maintains global development and commercial rights to sitravatinib outside of certain Asian territories, where it is partnered with BeiGene, and is free to develop the program in combination with other agents.

About Sitravatinib

Sitravatinib is a spectrum-selective kinase inhibitor that potently inhibits receptor tyrosine kinases (RTKs), including TAM family receptors (TYRO3, Axl, Mer), split family receptors (VEGFR2, KIT) and RET. As an immuno-oncology agent, sitravatinib is being evaluated in combination with nivolumab (OPDIVO), an anti-PD-1 checkpoint inhibitor, in patients who have experienced documented disease progression following treatment with a checkpoint inhibitor. Sitravatinib’s potent inhibition of TAM and split family RTKs may overcome resistance to checkpoint inhibitor therapy through targeted reversal of an immunosuppressive tumor microenvironment, enhancing antigen-specific T cell response and expanding dendritic cell-dependent antigen presentation.

Sitravatinib is also being evaluated as a single agent in a Phase 1b expansion clinical trial emphasizing enrollment of patients whose tumors harbor specific mutations in the CBL protein. When CBL is inactivated by mutation, multiple RTKs, including TAM, VEGFR2 and KIT, are dysregulated and may act as oncogenic tumor drivers in NSCLC and melanoma. Sitravatinib potently inhibits these RTKs and is being investigated as a treatment option for cancer patients with CBL mutations

Forbius Announces the First Patient Dosed in a Phase 1 Oncology Trial of AVID200, a Novel TGF-beta 1 & 3 Inhibitor

On January 7, 2019 Forbius, a clinical-stage company developing biologics for the treatment of cancer and fibrosis, reported that the first patient was dosed in a Phase 1 clinical trial with AVID200 (Press release, Forbius, JAN 7, 2019, View Source [SID1234532547]). The trial will evaluate safety, pharmacokinetics, pharmacodynamics, and antitumor effects of escalating doses of AVID200 in patients with solid tumors.

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"Our goal is to significantly expand the number of cancer patients who benefit from checkpoint blockade and other immunotherapies. AVID200 was designed to have the potency and isoform selectivity to effectively counteract the highly immunosuppressive effects of TGF-beta in the tumor microenvironment and reverse resistance to immunotherapy," commented Dr. Maureen O’Connor-McCourt, CSO of Forbius.

AVID200 selectively neutralizes TGF-beta 1 & 3 with best-in-class pM potency, thus neutralizing the principal immunosuppressive TGF-beta isoforms. AVID200’s optimal selectivity was also designed to circumvent cardiac and other safety issues that have limited the applicability of older-generation, non-selective TGF-beta inhibitors.

TGF-beta 1 & 3 are the main oncogenic TGF-beta isoforms expressed by many solid tumors. They are believed to play a major role in T-cell suppression, fibrosis, and resistance to immunotherapeutics such as nivolumab (Opdivo) and pembrolizumab (Keytruda) (Chakravarthy et al., Nature Comm., 2018; Tauriello et al., Nature, 2018; Mariathasan et al., Nature, 2018).

AVID200’s immuno-oncology mode of action focuses on the reversal of both immunosuppression and fibrosis in the tumor stroma. In syngeneic mouse tumor models, AVID200 treatment led to T-cell activation, increased immune cell infiltration, and increased efficacy of immune checkpoint agents.