On April 19, 2018 The biopharmaceutical company MOLOGEN AG reported that it presented data of its EnanDIM molecules, a new generation of potent non chemically-modified TLR9 agonists, at the AACR (Free AACR Whitepaper) Annual Meeting 2018 (American Association for Cancer Research) in Chicago, Illinois, U.S. (14 – 18 April 2018) (Press release, Mologen, APR 19, 2018, View Source [SID1234525553]). In murine tumor models, monotherapy with EnanDIM resulted in beneficial modulation of the tumor microenvironment (TME) translating into remarkable anti-tumor effects with highly increased survival rates. In two cancer models complete tumor regression in the majority of mice was observed. Importantly, in a subsequent re-challenge study all surviving mice rejected tumor cells, which indicates a sustained anti-tumor memory of the immune system. Hence, the data provide an excellent basis for further development of EnanDIM in cancer.

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"The presented data clearly reveal the enormous potential of the EnanDIM product family. Hence, besides our late-stage candidate lefitolimod, we have strong follow-up molecules and we aim to enter EnanDIM into the clinical phase as soon as possible, of course depending on available resources", said Dr Mariola Soehngen, Chief Executive Officer of MOLOGEN.

"We are excited about the beneficial TME-modulating effects of single-agent EnanDIM which translated into remarkable anti-tumor activity, a clear pre-clinical proof of concept", said Dr Matthias Baumann, Chief Medical Officer at MOLOGEN, "and keep in mind that we have already promising pre-clinical results with EnanDIM and checkpoint inhibitors which have been presented last year. In summary, this is a clear "Go" for further development of EnanDIM in the IO space."

EnanDIM (Enantiomeric, DNA-based, ImmunoModulator), as a new generation of immunomodulators and so called Immune Surveillance Reactivators (ISR), belongs to the class of TLR9 agonists and represents one of MOLOGEN’s follow-up compounds to lefitolimod exhibiting an variable immunomodulatory pattern dependent on the specific EnanDIM molecule, a one-step production process.

The EnanDIM molecules consist entirely of natural DNA, as is also the case with lefitolimod. The main difference between MOLOGEN’s two ISR families is their molecule structure. Whereas lefitolimod is dumbbell-shaped and covalently-closed, EnanDIM molecules have a linear structure. However, as with lefitolimod, due to its specific structure, no chemical modification is needed in order to protect the molecules against degradation by enzymes.

Latest data on the EnanDIM molecules have been presented not only at the AACR (Free AACR Whitepaper) in Chicago, but also at the ITOC-5 Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) Conference in Berlin (19 – 21 March 2018).

On April 18, 2018 Trillium Therapeutics Inc. (Nasdaq/TSX: TRIL), a clinical-stage immuno-oncology company developing innovative therapies for the treatment of cancer, reported that preclinical data from its TTI-622 (SIRPa-IgG4 Fc) immune checkpoint inhibitor program were presented at the 109th Annual Meeting of the American Association for Cancer Research (AACR) (Free AACR Whitepaper) (Press release, Trillium Therapeutics, APR 18, 2018, View Source [SID1234525500]).

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TTI-622 (SIRPa-IgG4 Fc) is the second SIRPaFc decoy receptor that Trillium is advancing into the clinic. It consists of the CD47-binding domain of human SIRPa linked to an IgG4 Fc region and is being developed primarily for combination therapy.

The data presented at AACR (Free AACR Whitepaper) demonstrate that TTI-622 induces the phagocytosis of a broad panel of tumor cells derived from patients with both hematological and solid tumors. As a monotherapy, TTI-622 treatment resulted in decreased tumor growth and improved survival in a B cell lymphoma xenograft model, and enhanced the efficacy of cetuximab (anti-EGFR) and daratumumab (anti-CD38) antibodies in solid and hematological xenograft models, respectively. Unlike CD47-blocking antibodies, TTI-622 bound minimally to human erythrocytes and did not induce hemagglutination in vitro.

"The preclinical data presented at AACR (Free AACR Whitepaper) reinforce our confidence in this target and provide a solid foundation for initiating a clinical program with TTI-622," said Dr. Niclas Stiernholm, President and CEO of Trillium Therapeutics. This second SIRPaFc decoy receptor complements TTI-621, and allows us to evaluate the effects of CD47 blockade using different levels of Fc receptor engagement. Importantly, we believe the minimal binding of TTI-622 to human red blood cells distinguishes this agent from other IgG4-based CD47 targeted therapies."

A two-part, multicenter, open-label, phase 1a/1b study of TTI-622 in patients with advanced relapsed or refractory lymphoma or multiple myeloma is being initiated, with the first patient expected to be dosed in Q2 2018. In the phase 1a dose-escalation study, patients will be enrolled in sequential dose cohorts to receive TTI-622 once weekly to characterize safety, tolerability, pharmacokinetics, and to determine the maximum tolerated dose. In the phase 1b study, patients will be treated with TTI-622 in combination with rituximab, a PD-1 inhibitor or a proteasome inhibitor-containing regimen.

On April 18, 2018 Astellas Pharma Inc. (TSE: 4503, President and CEO: Kenji Yasukawa, "Astellas" ) and Kite, a Gilead Company (Nasdaq: GILD, President and CEO: John Milligan, "Kite"), reported that an agreement has been completed for the transfer of certain Agensys research facilities in Santa Monica, California, USA, to Kite (Press release, Astellas Pharma US, APR 18, 2018, View Source [SID1234525501]). The asset transfer was completed on April 12, 2018. Additional financial information or further deal terms are not being disclosed.

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Astellas is a pharmaceutical company dedicated to improving the health of people around the world. (PRNewsFoto/Astellas Pharma Inc.)

The facilities transfer is part of the wind-down process of the Agensys research operations, as announced by Astellas on July 27, 2017. Additional wind-down activities were completed in the first quarter of calendar year 2018, following the Company’s decision to further refine its oncology strategy by expanding its investment in the research of new technologies and modalities and reducing its focus on Antibody-Drug Conjugate (ADC) research, which was the core focus of work conducted at Agensys. Astellas will continue certain clinical trials and collaborations on some ADC programs that have been in progress at Agensys, including its collaboration with Seattle Genetics, Inc.

On April 18, 2018 Sosei Group Corporation ("Sosei" or the "Company"; TSE Mothers Index: 4565), the world leader in GPCR medicine design and development, reported that new preclinical data for AZD4635 was presented by AstraZeneca in a poster (abstract 3751) yesterday at the American Association of Cancer Research Annual Meeting, 17 April 2018; Chicago, IL, USA (Press release, Sosei, APR 18, 2018, View Source;sid=1573490 [SID1234525518]).

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AZD4635 is a potent and selective, orally available, small molecule adenosine A2A receptor (A2AR) antagonist. It was discovered by Sosei’s wholly-owned subsidiary Heptares Therapeutics and AstraZeneca licensed exclusive global rights to the molecule in 2015.

The poster is entitled "Inhibition of A2AR by AZD4635 induces anti-tumor immunity alone and in combination with anti-PD-L1 in preclinical models," and highlighted the following results:

Adenosine signalling through the A2AR results in a range of immunosuppressive effects which can promote tumour growth
AZD4635 is an oral, specific A2AR antagonist that is demonstrated to reverse adenosine mediated T cell suppression.
Treatment with AZD4635 alone and in combination with an anti-PD-L1 antibody led to a significant reduction in tumour growth in syngeneic tumour models exhibiting both high and low levels of adenosine
These effects were absent in immune-deficient animals confirming the immune-mediated mechanism of action. Further exploration of target engagement by AZD4635 is ongoing.
These data suggest that AZD4635 has the potential to restore immune responsiveness resulting in anti-tumour benefits alone and in combination with other cancer immunotherapies irrespective of the background tumour adenosine levels
AZD4635 is currently in a Phase 1 clinical trial as a single agent and in combination with AstraZeneca’s anti-PD-L1 antibody IMFINZI (durvalumab) in patients with solid malignancies (NCT02740985).

Notes to Editors

About AZD4635

AZD4635 is a potent and selective, orally available, small molecule adenosine A2A receptor (A2AR) antagonist discovered by Sosei subsidiary Heptares Therapeutics and licensed to AstraZeneca in 2015. High levels of adenosine are found in tumour microenvironments and benefit the progression of cancer. By activating the adenosine A2A receptor increased adenosine levels impair T-cell function and result in suppression of the host immune response. AZD4635 specifically blocks adenosine signalling via the A2A receptor signalling resulting in increased immune responsiveness and potential to destroy cancer cells and decrease tumour burden, A2A receptor antagonism can therefore promote the anti-cancer response of T-cells within the tumour microenvironment, offering a novel mechanism of action as a mono- or combination therapy.

On April 18, 2018 Oncolytics Biotech Inc. (TSX: ONC) (OTCQX: ONCYF), currently developing REOLYSIN (pelareorep), an intravenously delivered immuno-oncolytic virus turning cold tumors hot, reported two posters highlighting data from pelareorep studies presented at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2018. The conference takes place April 14-18, 2018, in Chicago (Press release, Oncolytics Biotech, 18 18, 2018, View Source [SID1234525555]).

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"These posters add additional confirmation of pelareorep’s promotion of an inflammatory signature in different cell lines," said Dr. Matt Coffey, President and CEO of Oncolytics Biotech. "The study by doctor Wilkinson demonstrates that pelareorep can establish an inflamed tumor phenotype and the presentation by doctor Goel highlights the synergistic combination of pelareorep and an anti-PD1 agent. Taken together, these findings highlight that pelareorep is priming the immune system and enhancing the activity of checkpoint blockade. As MSS CRC typically does not respond to checkpoint blockade, viral priming could expand the use of this drug class by making non-susceptible tissue susceptible by turning cold tumors hot. This work will of course lead to additional studies in combination with other immunotherapies."

Presenter: Sanjay Goel, MD, Associate Professor of Medicine, Montefiore Medical Center
Presentation Title: Potentiating effect of reovirus in anti-PD1 therapy in colorectal cancer
Session Title: Receptor Targeting and the Tumor Microenvironment
Location: Poster Section 38
Poster Board #: 17
Poster Number: 3917

Data presented in the poster demonstrated:

pelareorep administration increased PD-L1 expression on MSS CRC cells;

possible evidence of a vaccine effect: immunologically competent mice were re-challenged with the original tumor and the tumor was unable to propagate;

combination therapy made statistically significant improvements in survival compared to controls in both BALB/c (median 42 vs. 16 days, p=0.003) and C57BL/6 (median 24 vs. 17 days, p=0.02) mice; and

pelareorep treated xenografted tumor tissue showed a higher infiltration of T lymphocytes as confirmed by CD8-positive and intensified granzyme staining.

Presenter: Grey Wilkinson, PhD, Translational Scientist, Oncolytics Biotech
Presentation Title:
Pelareorep promotes the expression of a chemokine signature that predicts response to immunotherapy
Session Title: Immunomodulatory Agents and Interventions 2
Location: Poster Section 33
Poster Board #: 10
Poster Number: 4707

Data presented in the poster demonstrated:

the expression of a chemokine signature that predicts response to immunotherapy;

global changes in gene expression are unique and different for each cell line following pelareorep infection and changes in gene expression occur before significant cell lysis;

pelareorep differentially promotes the expression of innate and adaptive immunity related genes in HCC, CRC, NSCLC cell lines; and

pelareorep promotes the expression of gene signatures that predict response to immuno-therapies in HCC cells.

These posters are now available on the Posters & Publications page of the company’s website: www.oncolyticsbiotech.com/technology/posters-publications.

About REOLYSIN/Pelareorep
REOLYSIN, also known as pelareorep, is a non-pathogenic, proprietary isolate of the unmodified reovirus: a first-in-class intravenously delivered immuno-oncolytic virus for the treatment of solid tumors and hematological malignancies. The compound induces selective tumor lysis and promotes an inflamed tumor phenotype through innate and adaptive immune responses to treat a variety of cancers.