On September 10, 2018 TRACON Pharmaceuticals (NASDAQ:TCON), a clinical stage biopharmaceutical company focused on the development and commercialization of novel targeted therapeutics for cancer, wet age-related macular degeneration and fibrotic diseases, reported the publication of results from a Phase 1b clinical trial combining TRC105 with Inlyta (axitinib) in patients with advanced or metastatic renal cell carcinoma (RCC) (Press release, Tracon Pharmaceuticals, SEPT 10, 2018, View Source [SID1234529373]). Dr. Toni Choueiri of the Dana Farber Cancer Institute and colleagues published these results in the peer-reviewed journal, The Oncologist (Epublication ahead of print is available at PubMed.gov through PubMed ID number 30190302), and Dr. Andrew Hahn of the Huntsman Cancer Institute and co-authors published an accompanying editorial (Epublication ahead of print is available at PubMed.gov through PubMed ID number 30139834). These data were previously presented at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) 2016 Congress in Copenhagen, Denmark.

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The open-label dose escalation and expansion Phase 1b study enrolled a total of 18 patients (17 of whom were evaluable for response) who had received at least one prior line of therapy with a VEGF receptor tyrosine kinase inhibitor (VEGFR TKI). The median number of prior therapies in the group was three, with a range of one to six. All patients in the trial received a combination of TRC105 and Inlyta. The data are summarized in the table below.

For comparison, in a separate trial, the objective response rate (ORR) seen in the large subgroup of VEGFR TKI-refractory patients treated with Inlyta (n=194) in the Inlyta AXIS Phase 3 study in second-line clear cell RCC patients was 11.3%, and median progression-free survival (PFS) was 4.8 months.

The publication also notes that plasma levels of TGF-β receptor 3 (betaglycan) at baseline were significantly higher in patients who experienced a partial response, while levels of osteopontin were significantly lower at baseline for patients that achieved a partial response. Both markers correlated with time on study and their potential prognostic value are being investigated in the ongoing Phase 2b TRAXAR study. TRACON’s Phase 2b TRAXAR clinical trial of TRC105 in combination with Inlyta completed enrollment of 150 patients with advanced or metastatic RCC in Q3 2017 and top-line data are expected to be available in December 2018.

About the TRAXAR Phase 2b Clinical Trial in RCC

The Phase 2b TRAXAR clinical trial is a multicenter, open-label, randomized clinical trial of TRC105 in combination with Inlyta versus Inlyta in patients with advanced or metastatic RCC. The primary endpoint of the Phase 2b study is progression-free survival. Patients may have also failed one prior mTOR inhibitor and one prior immunotherapy. For additional information on this clinical trial, please visit www.clinicaltrials.gov, identifier NCT01806064.

About Carotuximab (TRC105)

TRC105 is a novel, clinical stage antibody to endoglin, a protein overexpressed on proliferating endothelial cells that is essential for angiogenesis, the process of new blood vessel formation. TRC105 is currently being studied in a pivotal Phase 3 trial in angiosarcoma and multiple Phase 2 clinical trials, in combination with VEGF inhibitors, as well as in a Phase 1 trial with Opdivo. TRC105 has received orphan designation for the treatment of soft tissue sarcoma in both the U.S. and EU. The ophthalmic formulation of TRC105, DE-122, is currently in a randomized Phase 2 trial for patients with wet AMD. For more information about the clinical trials, please visit TRACON’s website at www.traconpharma.com/clinical_trials.php.

On September 10, 2018 Five Prime Therapeutics, Inc. (Nasdaq:FPRX), a biotechnology company discovering and developing innovative immuno-oncology protein therapeutics, reported that the company completed the Phase 1 safety lead-in portion and has initiated the Phase 3 portion of the FIGHT Phase 1/3 clinical trial of bemarituzumab (FPA144), an isoform-selective anti-FGF receptor 2b antibody, in combination with chemotherapy in patients with previously untreated, advanced gastric cancer (GC) or gastroesophageal junction (GEJ) cancer (Press release, Five Prime Therapeutics, SEPT 10, 2018, View Source [SID1234529372]).

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"We are very pleased to have completed the safety lead-in and move into the Phase 3 registrational portion of the bemarituzumab trial in patients with gastric cancer," said Helen Collins, M.D., Senior Vice President and Chief Medical Officer of Five Prime. "Patients with advanced gastric cancer are in dire need of new treatment options. Bemarituzumab is a targeted therapy and we are using state-of-the-art diagnostic tools to help us identify patients with FGFR2b overexpression, which is associated with a worse prognosis. Bemarituzumab has demonstrated encouraging monotherapy activity as a late-line treatment for gastric cancer and we believe that combining with chemotherapy in the front-line setting should provide the greatest patient benefit."

In December 2017, Five Prime initiated the Phase 1 portion (NCT03343301) of the Phase 1/3 FIGHT (FGFR2b Inhibition in Gastric and Gastroesophageal Junction Cancer Treatment) global registrational trial. The Phase 1 portion tested bemarituzumab doses of 6 mg/kg and 15 mg/kg in combination with modified FOLFOX6 (mFOLFOX6) with no overlapping toxicities identified.

The randomized, controlled, double-blinded Phase 3 portion of the FIGHT trial will evaluate bemarituzumab plus mFOLFOX6 versus placebo plus mFOLFOX6 in approximately 550 patients with gastric cancer (GC) or gastroesophageal junction (GEJ) cancer whose tumors overexpress FGFR2b. The Phase 3 trial will include approximately 250 sites in the U.S., Europe and Asia, including China, South Korea and Japan, where the incidence of gastric cancer is high. Zai Lab will manage the Phase 3 portion of the FIGHT trial in China.

The primary endpoint of the FIGHT trial is overall survival (OS) with secondary endpoints of progression-free survival (PFS), objective response rate (ORR), safety and pharmacokinetic (PK) parameters.

Unmet Need in GC and GEJ

GC, including GEJ cancer, is the fifth most common cancer worldwide and third leading cause of cancer death.

Current first-line chemotherapy treatment delays progression by approximately 6 months compared to best supportive care, but median OS remains poor with literature-reported ranges of approximately 10 to 11 months and PFS of approximately 6 months. The presence of FGFR2b overexpression is present in approximately 10% of patients with GC/GEJ and is associated with a worse prognosis. Few treatment options following progression are available after first-line chemotherapy and a significant unmet need remains in the treatment of GC/GEJ.

Five Prime is developing companion diagnostics to identify FGFR2b overexpression using an IHC test and FGFR2 gene amplification using ctDNA analysis. Five Prime will use both assays to select patients for the FIGHT trial.

About Bemarituzumab

Bemarituzumab is a first-in-class, isoform-selective, humanized monoclonal antibody in clinical development as a targeted immunotherapy for tumors that overexpress FGFR2b, a splice variant of a receptor for some members of the fibroblast growth factor (FGF) family. Bemarituzumab blocks FGFs 7, 10 and 22 from binding to FGFR2b, and has been engineered for enhanced antibody-dependent cell-mediated cytotoxicity (ADCC) to increase direct tumor cell killing by recruiting natural killer (NK) cells. Clinical results to date suggest that the specificity of bemarituzumab avoids the dose-limiting toxicities that have been seen with less selective pan-FGFR tyrosine kinase inhibitors that act on multiple FGFRs, including FGFR2.

In December 2017, Five Prime and Zai Lab announced a strategic collaboration for the development and commercialization of bemarituzumab in Greater China.

On September 10, 2018 Selecta Biosciences, Inc. (Nasdaq: SELB), a clinical-stage biopharmaceutical company focused on unlocking the full potential of biologic therapies by mitigating unwanted immune responses, reported that CFO and Head of Corporate Strategy John Leaman, M.D., will present at the Janney Healthcare Conference in New York City at 9:05 a.m. ET on Monday, September 17, 2018 (Press release, Selecta Biosciences, SEPT 10, 2018, View Source [SID1234529371]). A live webcast of the presentation can be accessed via the Investors & Media section of the company’s website, View Source

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On September 10, 2018 Alkermes plc (Nasdaq : ALKS ) reported that it has expanded its ongoing phase 1 study for ALKS 4230, the company’s immuno-oncology drug candidate, to evaluate its safety and anti-tumor activity when administered in combination with the FDA-approved PD-1 inhibitor KEYTRUDA (pembrolizumab) in patients with advanced solid tumors (Press release, Alkermes, SEPT 10, 2018, View Source [SID1234529370]). ALKS 4230 is an engineered fusion protein designed to preferentially bind and signal through the intermediate affinity interleukin-2 (IL-2) receptor complex, thereby selectively activating and increasing the number of immunostimulatory tumor-killing immune cells while avoiding the expansion of immunosuppressive cells that interfere with anti-tumor response. Pembrolizumab is an anti-PD-1 therapy that works by increasing the ability of the body’s immune system to help detect and fight tumor cells.

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"The emergence of therapeutics targeting the PD-1 pathway has revolutionized the field of oncology, yet there remains significant opportunity to improve the clinical benefit of checkpoint inhibitors for the treatment of solid tumors. There is strong scientific rationale supporting the combination of PD-1 pathway inhibition with cytokine therapy such as ALKS 4230 to activate the body’s own immune system to fight cancer, and the potential synergies of ALKS 4230 and pembrolizumab on anti-tumor activity may expand treatment options for patients in a variety of tumor settings," said Craig Hopkinson, M.D., Chief Medical Officer and Senior Vice President of Medicines Development and Medical Affairs at Alkermes. "We’ve accelerated clinical evaluation of ALKS 4230 in combination with pembrolizumab based on data from our ongoing monotherapy dose-escalation stage of the phase 1 study, where ALKS 4230 demonstrated dose-dependent pharmacodynamic effects on circulating natural killer cells and CD8+ T cells, and minimal and non-dose dependent effects on immunosuppressive regulatory T cells. These data validate our design rationale for ALKS 4230, and we look forward to sharing initial data from our dose-escalation cohorts at a medical meeting later this year."

Evaluation of the safety and anti-tumor activity of ALKS 4230 in combination with pembrolizumab will be assessed in certain PD-1 approved tumor types in both refractory and treatment naïve patients, including non-small cell lung cancer (NSCLC), head and neck squamous cell carcinoma, gastric cancer, urothelial carcinoma and microsatellite instability-high cancers. Melanoma and renal cell carcinoma will also be evaluated in the cohort of treatment naïve patients. The combination of ALKS 4230 and pembrolizumab will also be assessed in certain PD-1 unapproved tumor types, including colorectal cancer, triple-negative breast cancer, ovarian carcinoma, soft tissue sarcomas, and patients with metastatic NSCLC whose tumors express low or undetectable PD-L1 (tumor proportion score <1%).

About the Phase 1 Study

The Alkermes-sponsored phase 1 study for ALKS 4230 includes three distinct stages: the ongoing monotherapy dose-escalation stage, the planned monotherapy dose-expansion stage and the newly initiated combination therapy stage with pembrolizumab. The dose-escalation stage is designed to determine a maximum tolerated dose of ALKS 4230 in a monotherapy setting and to identify the optimal dose range of ALKS 4230 based on measures of immunological-pharmacodynamic effects. Upon completion of the dose-escalation stage, the company expects to initiate the monotherapy dose-expansion stage in up to 42 patients with renal cell carcinoma or melanoma. The newly initiated combination therapy stage of the phase 1 study will assess the safety profile and anti-tumor activity of ALKS 4230 with pembrolizumab in up to 148 patients with select advanced solid tumors. This combination therapy stage will be run independent of, and concurrently with, the monotherapy dose-escalation and dose-expansion stages of the trial.

Anti-tumor response and duration of response assessments in the dose-expansion and combination stages of the phase 1 study will be based on investigator-assessed, immune-related response (irRC) criteria and independent, central, blinded radiographic review per Response Evaluation Criteria in Solid Tumors (RECIST 1.1) criteria.

About ALKS 4230

ALKS 4230 is an engineered fusion protein designed to preferentially bind and signal through the intermediate affinity interleukin-2 (IL-2) receptor complex, thereby selectively activating and increasing the number of immunostimulatory tumor-killing immune cells while avoiding the expansion of immunosuppressive cells that interfere with anti-tumor response. The selectivity of ALKS 4230 is designed to leverage the proven anti-tumor effects while overcoming limitations of existing IL-2 therapy, which activates both immunosuppressive and tumor-killing immune cells.

On September 10, 2018 The Centre for the Commercialization of Antibodies and Biologics (CCAB) and Triumvira Immunologics, Inc. (Triumvira), reported a new licensing agreement between the University of Toronto (U of T) and Triumvira (Press release, Triumvira Immunologics, SEP 10, 2018, View Source [SID1234529369]). The agreement provides Triumvira with an exclusive license for antibodies discovered at the U of T on specified therapeutic targets. Triumvira is a privately held biopharmaceutical company with R&D facilities in Hamilton, ON, that is developing a novel platform for engineering T cells to attack multiple cancer types.

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CCAB is the assigned agent for the U of T for the commercialization of a large portfolio of human antibodies. Under the terms of the agreement, U of T will receive up-front fees, milestone payments and royalty payments on net sales of products on three therapeutic targets: BCMA, ROR1 and one undisclosed target.

"We are very pleased to be working with The Centre for the Commercialization of Antibodies and Biologics and the University of Toronto under this new licencing agreement," said Paul Lammers, MD, MSc, President and Chief Executive Officer of Triumvira. "This partnership is critical as we work to bring new treatments to patients in need through our proprietary T Cell-Antigen Coupler (TAC) technology."

Triumvira’s lead therapeutic candidate, TAC01-CD19, is a CD19-directed T cell product for the treatment of B cell malignancies and is anticipated to enter Phase I clinical trials in H1 2019 in patients with diffuse large B cell lymphoma (DLBCL). The company is also developing a series of products for solid tumors.

"Collaboration is a vital part in the development of new therapeutics. These types of agreements continue to strengthen the connection between academia and industry and help to translate the wealth of scientific knowledge from the laboratories at our world-class universities to the clinic," CCAB Chief Executive Officer Robert Verhagen said.