On November 9, 2019 Akeso,Inc. (hereinafter referred to as "Akeso"), a Chinese biopharmaceutical company focusing on new innovative antibody drug discovery and development in oncology and immunology therapeutic areas, reported the completion of its Series-D private financing for nearly US$150 million on November 1, 2019 (Press release, Akeso Biopharma, NOV 9, 2019, View Source [SID1234550837]).

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The investment was led by Loyal Valley Capital ("LVC") and Sino Biopharmaceutical Co. Ltd. ("Sino Biopharm"), and co-invested by leading international healthcare specialists including Lake Bleu Capital, AIHC Capital, OrbiMed, along with other famed investors including Shenzhen Capital Group Co., Ltd ("SCGC"), CDG International Company limited, and etc.

The proceeds will fuel the clinical trials of new drug programs and the development of the Company’s R&D of innovative drugs pipelines. The funding will also help Akeso to continue to expand its global footprint including new clinical trials in USA, as well as to expand our manufacturing capabilities.

"We are very pleased to have received great recognitions from top investment institutions in biopharmaceutical industry. This round of financing has successfully drawn continuous supports from industry-renowned long-term investment funds, famous strategic investors, top-tier healthcare specialist funds widely recognised in the capital market, influential family office fund from Hong Kong and a multitude of existing shareholders," said Dr. Xia Yu, CEO, President and founder of Akeso,

With a vision of providing high quality and affordable antibody drugs for patients worldwide, Akeso is a clinical-stage biopharmaceutical company in China committed to in-house discovery and development of innovative mono- and bi-specific antibody drugs. Since its establishment in 2012 in China, Akeso has developed a broad product portfolio consisting of over 30 programs in oncology and immunology therapeutic areas. Many of these potential drug candidates are first-in-class globally including PD1/CTLA4, and PD1/VEGF. Akeso’s strong and comprehensive R&D capability is well recognized in the industry and endorsed by out-licensing AK107, an in-house discovered CTLA-4 monoclonal antibody drug candidate, to Merck in November 2015, and signing exclusive partnership agreement with Sino Biopharmaceutical Co. Ltd. (1177.HK) in June 2019 to co-develop and commercialize its internally developed AK105 (PD-1).

Ms. Iris Wang, Managing Director at OrbiMed commented, "OrbiMed seeks to invest in biopharmaceutical companies pursuing high-potential new drugs for important diseases with unmet needs. Akeso has developed a broad and innovative portfolio in both oncology and immunology therapeutic areas, and is showing promising results in clinical trials. We are excited to participate in this."

"We are very honoured to invest in Akeso. LVC focuses on supporting companies pursuing excellence and creating a world-class business. With a vision to become a global leader in the biopharmaceutical industry, Akeso has developed a comprehensive, strong and highly efficient in-house drug discovery and development platform since its inception. We are very impressed by its dedicated and highly experienced management team and the Company’s commitment of developing high quality, affordable, innovative antibody drugs for patients worldwide is very much in line with our investment philosophy. We look forward to sharing our experience and resources with Akeso and supporting the Company’s continuous growth," said Loyal Valley Capital’s managing partner Mr. Lin Lijun.

Mr. Tse Hsin, vice president of Sino Biopharm, said: "This is the Sino Biopharm’s first time as lead investor to invest in late stage financing of a private biotech company. This is another significant collaboration milestone between both companies after our joint-venture agreement in June to co-develop and commercialize Akeso in-house developed AK105 (PD-1). Sino Biopharm strives to develop drugs with outstanding clinical value, particularly innovative medicines. Our investment in Akeso is in line with our overall innovative strategies. Our investment symbolises that both companies are making solid progress towards developing pharmaceutical ecosystem, which aims to benefit more patients in China and beyond."

"Akeso has had a remarkable record of brilliant execution in the service of an ambitious vision. It is great pleasure to see a company with this much existing success as well as massive potential to achieve more," said Dr Li Bin, founder of Lake Bleu Capital.

On November 9, 2019 Bolt Biotherapeutics, Inc., a private biotechnology company focused on using its Immune-Stimulating Antibody Conjugate (ISAC) platform technology to unleash the power of the immune system to treat cancer, reported new preclinical data demonstrating profound antitumor efficacy for its lead HER2 ISAC therapeutic program, when administered as a monotherapy, resulting in the complete eradication of large tumors (Press release, Bolt Biotherapeutics, NOV 9, 2019, View Source [SID1234550864]). The poster presentation entitled "HER2-targeting TLR7/8 immune-stimulating antibody conjugates elicit robust myeloid activation and anti-tumor immune responses in a TLR- and FcR- dependent manner" was presented at the 34th Annual Meeting of the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) in National Harbor, Maryland.

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"These exciting preclinical data provide a strong rationale for moving our ISAC cancer immunotherapy platform into clinical testing and I’m pleased to report that we expect to initiate our first clinical trial for our HER2 monotherapy in early 2020," stated Randall Schatzman, Ph.D., chief executive officer of Bolt. "While much progress has been made in cancer immunotherapy, there still remains a significant need for single-agent therapies that can impact well-established tumors and provide durable efficacy in tumors that are refractory to standard of care therapies. Our proprietary Boltbody ISACs embody all of these components, and we are highly optimistic about the future of this platform to impact cancer."

"We believe such profound antitumor activity is unprecedented, including complete tumor eradication in large tumors, with an immunotherapeutic systemically administered as a monotherapy," stated David Dornan, Ph.D., senior vice president of research at Bolt Biotherapeutics. "Our data define the details of the mechanism of action by which our Boltbody technology is able to eliminate these hard to treat solid tumors, while generating immunological memory to suppress recurrence."

In the series of studies presented at SITC (Free SITC Whitepaper), key preclinical data show:

ISAC antitumor activity requires tumor target expression, interaction with Fc gamma receptors on immune cells, and TLR7/8 engagement
Single-agent anti-HER2 ISAC treatment led to in vivo tumor regression and clearance in models with large tumor burden and are resistant to anti-HER2 naked antibody treatment
Immunological memory was achieved as measured by protection from subsequent tumor growth. In syngeneic tumor models in which anti-HER2 ISAC treatment led to tumor clearance, hosts that were re-challenged with the parental tumor cell line lacking HER2 antigen expression were resistant to tumor growth. This protection was mediated by T cells as evidenced by the ability to re-establish tumors after the deletion of CD4 and CD8 T cells.
About Bolt Biotherapeutics’ Immune-Stimulating Antibody Conjugate (ISAC) Platform Technology
The Boltbody platform consists of Immune-Stimulating Antibody Conjugates (ISAC) that harness the ability of innate immune agonists to convert cold tumors into immunologically hot tumors thereby illuminating tumors to the immune system and allowing them to be invaded by tumor killing cells. Boltbody ISACs have demonstrated the ability to eliminate tumors following systemic administration in preclinical models and have also led to the development of immunological memory, which is predicted to translate into more durable clinical responses for patients.

On November 9, 2019 Pieris Pharmaceuticals, Inc. (NASDAQ: PIRS), a clinical-stage biotechnology company advancing novel biotherapeutics through its proprietary Anticalin technology platform for respiratory diseases, cancer, and other indications, reported the presentation of data from the phase 1 dose-escalation monotherapy study of PRS-343, a 4-1BB/HER2 bispecific for the treatment of HER2-positive solid tumors, in a late-breaking oral presentation at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) Annual Meeting. PRS-343 demonstrated single-agent anti-tumor activity, including partial responses, in heavily pre-treated patients across multiple HER2-positive tumors (Press release, Pieris Pharmaceuticals, NOV 9, 2019, View Source [SID1234550812]). Beyond demonstrating clinical benefit, PRS-343 showed a potent increase in CD8+ T cell numbers and proliferative index in the tumor microenvironment of responders, indicative of 4-1BB agonism on T cells. PRS-343 was safe and well tolerated at all doses and schedules tested.

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"The data presented today demonstrate PRS-343’s potential to make a meaningful difference for patients with tumors that are difficult to treat with currently-available therapies," said Geoffrey Y. Ku, medical oncologist at Memorial Sloan Kettering and the principal investigator for the PRS-343 monotherapy trial. "Beyond today’s presentation, I look forward to sharing some of these case studies at Pieris’ upcoming R&D day alongside emerging data from the study of PRS-343 in combination with atezolizumab."

The ongoing phase 1 first-in-human, open-label multicenter trial has enrolled 53 patients, including 19 patients with gastric cancer, 14 patients with breast cancer, 6 patients with gynecological cancers, and 14 patients with other tumor types. Eleven dose cohorts have been evaluated at a Q3W dosing schedule, with the 11th dose level (8 mg/kg) also being evaluated at a Q2W dosing schedule. Pre- and post- treatment biopsies were obtained from many of the patients. Trial objectives include evaluation of safety and tolerability, characterizing the pharmacokinetic profile, assessing pharmacodynamic and potential immunogenicity effects, and investigating clinical response.

As of the cut-off date of October 23, 2019, 18 patients were evaluable for a response at active dose levels, which began at cohort 9 (2.5 mg/kg).

At the 8 mg/kg Q2W dose level, one patient with stage 4 gastric adenocarcinoma and one patient with stage 4 gynecological carcinoma achieved confirmed partial responses; the remaining patients experienced stable disease, for an overall disease control rate of 100% in this cohort as best response.
Across the remaining active dose levels and schedules, an additional five patients experienced stable disease.
Biomarker data from post-treatment tumor biopsies in patients receiving active dose levels and showing clinical benefit reflected a pronounced increase in CD8+ T cell numbers.
As of the cutoff date, treatment duration across active dose levels is over 30 weeks.
Treatment-related adverse events (AEs) were primarily grade 1 and 2. The most common AEs were infusion related reactions and fatigue. No patients experienced a dose-limiting toxicity and a maximum tolerated dose has not been reached.
"In addition to being the first 4-1BB bispecific to enter the clinic, PRS-343 is our lead immuno-oncology asset, and we believe this dataset serves as early clinical validation of our 4-1BB-targeting immuno-oncology approach and the Anticalin bispecific platform," said Stephen S. Yoder, President and Chief Executive Officer of Pieris. "PRS-343 shows promising signs of efficacy linked to clear biomarker evidence of 4-1BB agonism, in addition to being safe and well tolerated. We look forward to concluding this escalation trial in the near term and initiating an expansion trial informed by the emerging data. We also look forward to initiating clinical development of our 4-1BB/PD-L1 bispecific, PRS-344, with Servier in the first half of next year."

On November 9, 2019 Rakuten Medical, Inc. (RMI) a clinical-stage, global biotechnology company developing precision-targeted cancer therapies based on Rakuten Medical’s Illuminox, its proprietary, anti-cancer treatment platform, reported new preclinical data suggesting CD25 photoimmunotherapy (PIT) treatment, combined with an anti-PD1 therapy, may stimulate the immune system, and lead to a synergistic, anti-cancer activity in targeted tumors (Press release, Rakuten Medical, NOV 9, 2019, View Source [SID1234550813]).

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"These exciting data suggests that anti-CD25 photoimmunotherapy may alter the immune tumor environment and unlock the potential of combination immunotherapies for patients living with certain types of cancers for which there are few treatment options," said Miguel Garcia-Guzman, Ph.D., Vice Chairman and Chief Scientific Officer at Rakuten Medical. "We are committed to harnessing the full potential of the immune system through modulation of the cancer tumor environment, and these results support our clinical development program based on our anti-cancer treatment platform, Rakuten Medical’s Illuminox."

The preclinical data were showcased during a poster presentation during the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) 34th annual meeting:

"Intratumoral depletion of regulatory T-cells using CD25 targeted photoimmunotherapy elicits anti-cancer immune activity and synergizes with PD1 checkpoint blockade in immunocompetent mouse models." (Abstract P774), presented by Jerry J. Fong, Cancer Biology and Pharmacology, Rakuten Medical.

The poster discusses intratumoral depletion of regulatory T-cells (Tregs), a significant source of immune suppression, with an anti-CD25-IR700 conjugate therapy using PIT. Anti-cancer activity and subsequent immune responses following anti-CD25-IR700 PIT treatment, administered alone or in combination with anti-PD1 treatment, were evaluated in immunocompetent mouse models. Key highlights from the studies include:

Rapid and significant reduction of intratumoral Tregs, eliciting significant anti-cancer activity
An increase of non-exhausted T-cells following a single treatment, suggesting systemic activation and intratumoral recruitment of new CD8 T-cells from the periphery
Significant enhancement of anti-cancer activity in vivo, as demonstrated by percentage of mice achieving complete responses (CRs) with combination treatment in comparison to animals receiving one treatment alone
Durable increase of intratumoral CD8 T-cell/Treg ratio
Enhanced systemic adaptive immune responses and induced abscopal anti-cancer effects in a CD8 T-cell dependent manner
Tumor-specific immune memory response as demonstrated by systemic tumor-antigen-specific cytotoxic lymphocytes expansion and prevention of new tumor growth in CR mice
Combination treatment enhanced systemic adaptive immune responses and induced abscopal anti-cancer effects in a CD8 T-cell dependent manner

On November 9, 2019 Bolt Biotherapeutics, Inc., a private biotechnology company focused on using its Immune-Stimulating Antibody Conjugate (ISAC) platform technology to unleash the power of the immune system to treat cancer, reported new preclinical data demonstrating profound antitumor efficacy for its lead HER2 ISAC therapeutic program, when administered as a monotherapy, resulting in the complete eradication of large tumors (Press release, Bolt Biotherapeutics, NOV 9, 2019, View Source [SID1234550814]). The poster presentation entitled "HER2-targeting TLR7/8 immune-stimulating antibody conjugates elicit robust myeloid activation and anti-tumor immune responses in a TLR- and FcR- dependent manner" was presented at the 34th Annual Meeting of the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) in National Harbor, Maryland.

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Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

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"These exciting preclinical data provide a strong rationale for moving our ISAC cancer immunotherapy platform into clinical testing and I’m pleased to report that we expect to initiate our first clinical trial for our HER2 monotherapy in early 2020," stated Randall Schatzman, Ph.D., chief executive officer of Bolt. "While much progress has been made in cancer immunotherapy, there still remains a significant need for single-agent therapies that can impact well-established tumors and provide durable efficacy in tumors that are refractory to standard of care therapies. Our proprietary Boltbody ISACs embody all of these components, and we are highly optimistic about the future of this platform to impact cancer."

"We believe such profound antitumor activity is unprecedented, including complete tumor eradication in large tumors, with an immunotherapeutic systemically administered as a monotherapy," stated David Dornan, Ph.D., senior vice president of research at Bolt Biotherapeutics. "Our data define the details of the mechanism of action by which our Boltbody technology is able to eliminate these hard to treat solid tumors, while generating immunological memory to suppress recurrence."

In the series of studies presented at SITC (Free SITC Whitepaper), key preclinical data show:

ISAC antitumor activity requires tumor target expression, interaction with Fc gamma receptors on immune cells, and TLR7/8 engagement
Single-agent anti-HER2 ISAC treatment led to in vivo tumor regression and clearance in models with large tumor burden and are resistant to anti-HER2 naked antibody treatment
Immunological memory was achieved as measured by protection from subsequent tumor growth. In syngeneic tumor models in which anti-HER2 ISAC treatment led to tumor clearance, hosts that were re-challenged with the parental tumor cell line lacking HER2 antigen expression were resistant to tumor growth. This protection was mediated by T cells as evidenced by the ability to re-establish tumors after the deletion of CD4 and CD8 T cells.
About Bolt Biotherapeutics’ Immune-Stimulating Antibody Conjugate (ISAC) Platform Technology
The Boltbody platform consists of Immune-Stimulating Antibody Conjugates (ISAC) that harness the ability of innate immune agonists to convert cold tumors into immunologically hot tumors thereby illuminating tumors to the immune system and allowing them to be invaded by tumor killing cells. Boltbody ISACs have demonstrated the ability to eliminate tumors following systemic administration in preclinical models and have also led to the development of immunological memory, which is predicted to translate into more durable clinical responses for patients.