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Bolt Biotherapeutics Presents Preliminary Results from Phase 1/2 Trial of Lead HER2-targeting Boltbody™ ISAC BDC-1001 at ASCO 2021

On June 4, 2021 Bolt Biotherapeutics, Inc. (Nasdaq: BOLT), a clinical-stage biotechnology company pioneering a new class of immuno-oncology agents that combine the targeting precision of antibodies with the power of both the innate and adaptive immune systems, reported that a poster presentation discussing preliminary data from the Phase 1/2 clinical trial of BDC-1001, Bolt’s lead candidate, was presented at the 2021 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting, being held virtually from June 4-8, 2021 (Press release, Bolt Biotherapeutics, JUN 4, 2021, View Source [SID1234618696]). The poster is titled "Preliminary results from a phase 1/2 study of BDC-1001, a novel HER2 targeting TLR7/8 immune-stimulating antibody conjugate (ISAC), in patients (pts) with advanced HER2-expressing solid tumors."

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BDC-1001 is a human epidermal growth factor receptor 2, or HER2, ISAC comprised of a HER2-targeting biosimilar of trastuzumab conjugated to one of Bolt’s proprietary TLR7/8 agonists, for the treatment of patients with HER2-expressing solid tumors, including HER2-low tumors. As of January 29, 2021, Bolt had treated 20 patients and BDC-1001 appeared to be well tolerated with mild to moderate adverse events; no dose-limiting toxicities or drug-related serious adverse events were observed. Clinical activity was seen in the form of stable disease, reductions in tumor volume including a confirmed partial response and increases in pharmacodynamic markers that Bolt believes are consistent with its proposed mechanism of action.

"This poster reinforces the favorable safety and tolerability demonstrated in the first 20 patients treated with BDC-1001 in this first-in-human study in patients with HER2-expressing cancers," said Manish R. Sharma, M.D., of START Midwest, a principal investigator in Bolt’s ongoing BDC-1001 Phase 1/2 trial. "We have seen signs of activity, including a patient with a confirmed partial response and others with stable disease, in a population with diverse tumor types and a median of four prior lines of therapy."

The BDC-1001 Phase 1/2 trial is expected to enroll up to a total of 390 patients and is being conducted in four parts, with dose-escalation dose-expansion parts exploring both monotherapy and combination with a PD-1 checkpoint inhibitor. The monotherapy dose-escalation part of the trial continues to proceed according to plan, and full results are expected to be presented in the second half of 2021. Bolt plans to advance to the monotherapy Phase 2 dose-expansion cohorts and the dose-escalation combining BDC-1001 with an anti-PD-1 antibody later this year.

"I am grateful to everyone on the team for their hard work throughout this trial, especially during the pandemic," said Ecaterina Dumbrava, M.D., of The University of Texas MD Anderson Cancer Center, a principal investigator of the BDC-1001 Phase 1/2 trial. "These initial data provide additional support for the ISAC targeted approach that stimulates both the innate and adaptive immune systems in the treatment of cancer patients."

The abstract and poster from the ASCO (Free ASCO Whitepaper) presentation can be found on the ASCO (Free ASCO Whitepaper) website, as well as on the Bolt website.

About Bolt Biotherapeutics’ Immune-stimulating Antibody Conjugate (ISAC) Platform Technology
The Boltbody ISAC platform technology harnesses 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 as monotherapy 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.

About the Ongoing BDC-1001 Phase 1/2 Study in Patients with HER2-Expressing Solid Tumors
The Phase 1/2, multi-center, open-label study is evaluating the safety, pharmacokinetics, pharmacodynamics and proof of mechanism of BDC-1001 in patients with HER2-expressing solid tumors. The first portion of the study includes a monotherapy dose-escalation phase in which cohorts of patients will receive ascending intravenous doses of BDC-1001 to determine the maximum tolerated dose and/or the recommended dose to advance into expansion cohorts and Phase 2 based on safety and tolerability. The second portion of the study is a dose expansion phase in which patients will receive BDC-1001 monotherapy to further evaluate the safety, tolerability and clinical antitumor activity of the recommended Phase 2 dose. The study also includes similar dose escalation and expansion portions evaluating the combination of BDC-1001 with an anti-PD1 checkpoint inhibitor. Please refer to www.clinicaltrials.gov NCT04278144 for additional clinical trial information.

Sorrento and Researchers at Karolinska Institutet Have Signed a Research Collaboration Agreement on iPSC-Derived Dimeric Antigen Receptor-Modified Natural Killer (DAR-NK) Cells With The Vision To Bring “Off-The-Shelf" NK Cell-Based Cancer Treatments Rapidly To Patients

On June 4, 2021 Sorrento Therapeutics, Inc. (Nasdaq: SRNE, "Sorrento") reported that the Company has entered into an additional collaborative agreement with NextGenNK Competence Center-associated research groups at the Department of Medicine, Huddinge, Karolinska Institutet ("KI") in Stockholm, Sweden, aimed at producing novel cell-based therapeutics using natural killer ("NK") cells derived from induced pluripotent stem cells ("iPSCs") (Press release, Sorrento Therapeutics, JUN 4, 2021, View Source [SID1234583901]). Sorrento and KI are collaborative partners in the Competence Center for the development of next-generation NK cell-based cancer immunotherapies ("NextGenNK") coordinated by KI.

Under the agreement, Sorrento will provide know-how in the core chimeric antigen receptor ("CAR") and dimeric antigen receptor ("DAR") technologies and support the collaborative effort to develop new CAR-NK and DAR-NK candidates, as well as fund the translational validation of the technologies. Multiple product candidates will be developed and tested in the initial phase of the planned work, with the goal that the candidate products will qualify for further human clinical trials.

The foundational Sorrento research assets critical to this program are novel proprietary CAR and DAR constructs identified through Sorrento’s proprietary G-MAB fully human antibody library and previously validated as determinants of cell-based therapy potency against hematologic and solid tumors.

"It is a privilege to continue and extend our collaborative work with the distinguished KI faculty. We are proud to contribute our technologies to produce new optimized off-the-shelf adoptive NK cell immunotherapies", said Dr. Henry Ji, Chairman and CEO of Sorrento. "Our partnership with KI combines our know-how with the expertise of a world-renowned institution in the field of NK cell therapy. These types of partnerships are essential in advancing medicine and bringing new solutions to cancer patients in need."

KI scientists within NextGenNK will establish iPSC-derived NK-based therapeutic candidates utilizing Sorrento’s constructs and DAR technology. Work within KI has contributed to the development of methodologies that consistently generate robust and potent NK cell lineages following iPSC differentiation. Clinical trials of NK cell-based therapies for treatment of multiple myeloma led by researchers at KI have yielded promising preliminary results with long-lasting remissions. In a very cross-knit collaboration between Sorrento and KI, the team will aim to establish novel allogeneic, off-the-shelf, retargeted NK cell-based therapies.

Utilizing iPSCs enables mass production of off-the-shelf NK cell therapies that leverage Sorrento’s existing manufacturing infrastructure and know-how. Sorrento expects these validated re-engineered NK cell-based therapeutic candidates could potentially become a new generation in off-the-shelf treatments for cancer and infectious diseases. The core research will be performed at Karolinska Institutet with active involvement of the Sorrento R&D team in San Diego.

"The present collaboration brings together key competence from Sorrento and KI in an important area of cancer immunotherapy research. Sorrento’s intellectual contribution to the research at the Competence Center is a critical piece in enabling retargeted off-the-shelf NK cell products", said Evren Alici, Principal Investigator at KI.

"This is an important step in further enabling academic and industrial partnerships in the mission of achieving common goals for advancement of novel cancer immunotherapies," said Hans-Gustaf Ljunggren, Director of the NextGenNK Competence Center.

BERGENBIO PRESENTS DATA FROM PHASE I/II BEMCENTINIB/ERLOTINIB COMBINATION TRIAL IN NSCLC AT ASCO MEETING

On June 4, 2021 BerGenBio ASA (OSE:BGBIO), BerGenBio ASA (OSE: BGBIO), a clinical-stage biopharmaceutical company developing novel, selective AXL kinase inhibitors for severe unmet medical need, reported that end-of-trial data from a Phase I/II study of bemcentinib in combination with erlotinib in patients with advanced non-small cell lung cancer (NSCLC) at the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting (Press release, BerGenBio, JUN 4, 2021, View Source [SID1234583870]).

Study Design

Phase I of the study was a dose escalation arm designed to confirm the safety and tolerability of bemcentinib in NSCLC patients as both monotherapy and in combination with erlotinib in patients whose disease had previously progressed on erlotinib alone.

Phase II assessed patients in two groups; those whose disease had progressed on an approved EGFR inhibitor, and those who were responding/stable on erlotinib as a first line treatment. Both groups were treated with bemcentinib and erlotinib to evaluate the safety and activity of the combination, while assessing reversal or prevention of resistance to EGFR inhibition.

Conclusions

Data from the study found that Bemcentinib in combination with erlotinib was well tolerated over extended periods of time, with the longest ongoing patients having been dosed for over 46 months.

The combination led to disease stabilisation and durable tumour responses in a proportion of patients who had previously progressed on EGFR targeted therapy and who were negative for the T790M resistance mutation. In patients who were responding to first line treatment with erlotinib, either stable disease or partial response, the addition of bemcentinib led to further deepening of responses and prolonged the duration of responses beyond 30 months in 4 out of the 13 patients evaluated.

At the time of data cut-off, 2 patients are still participating in the study beyond 34 months of treatment. Ongoing patients at the time of study closure, who wish to continue receiving study treatment, will be offered the drug via an expanded access program.

Presenting author Lauren Byers, M.D., associate professor of Thoracic/Head and Neck Medical Oncology at the University of Texas MD Anderson Cancer Center, in Houston, said: "We are encouraged by the responses observed both in patients whose disease was progressing on EGFRi alone, as well as patients already in remission with erlotinib. In particular we were pleased to see durable responses exhibited by a number of patients on the study, with two patients continuing to be dosed with bemcentinib beyond 36 months. This is a good indicator that
bemcentinib offers excellent tolerability as well as the potential for anti-tumour activity and we look forward to following their progress as their treatment continues"

Byers reports past advisory board participation for BerGenBio.

Richard Godfrey, CEO of BerGenBio, said: "This end of study data shows the potential of bemcentinib as a combination treatment alongside EGFR inhibitors such as erlotinib and osimertinib, which are established treatments and widely used in indications such as NSCLC in patients with the EGFR driver mutation. We believe that further clinical investigation is needed to fully explore this potential, and look forward to discussing our findings further with our colleagues at ASCO (Free ASCO Whitepaper)."

Details of the presentation, also available on the investor section of BerGenBio’s website, are as follows:

E-poster title: Ph I/II study of oral selective AXL inhibitor bemcentinib (BGB324) in combination with erlotinib in patients with advanced EGFRm NSCLC: end of trial update

Session: Lung Cancer – Non-Small Cell Metastatic

Abstract ID: 9110

Date/Time: Friday, June 4, 2021 at 9:00 AM (EDT)

Authors: Byers et al.

About AXL

AXL kinase is a cell membrane receptor and an essential mediator of the biological mechanisms underlying life-threatening diseases.

In COVID-19, AXL has two synergistic mechanisms of action, it acts a co-receptor to ACE2, to which the spike protein of the SARS-CoV-2 virus attaches and enters the host cell, and AXL expression is upregulated that leads to suppression of the Type 1 Interferon immune response by host cells and in their environment.

Research data confirms bemcentinib inhibits SARS-CoV-2 host cell entry and promotes the anti-viral Type I interferon response. Data from a Phase II in human clinical trial has shown that treatment with AXL inhibitor bemcentinib increased the rate ventilator free survival in hospitalised COVID-19 patients.

In cancer, increase in AXL expression has been linked to key mechanisms of drug resistance and immune escape by tumour cells, leading to aggressive metastatic cancers. AXL suppresses the body’s immune response to tumours and drives treatment failure across many cancers. High AXL expression defines a very poor prognosis subgroup in most cancers. AXL inhibitors, such as bemcentinib, therefore, have potential high value as monotherapy and as the cornerstone of cancer combination therapy, addressing significant unmet medical needs and multiple high-value market opportunities. Research has also shown that AXL mediates other aggressive diseases including fibrosis.

About Bemcentinib

Bemcentinib (formerly known as BGB324), is a potential first-in-class, potent and highly selective AXL inhibitor, currently in a broad phase II clinical development programme. It is administered as an oral capsule and taken once per day. Ongoing clinical trials are investigating bemcentinib in COVID-19, and multiple solid and haematological tumours, in combination with current and emerging therapies (including immunotherapies, targeted therapies and chemotherapy), and as a single agent. Bemcentinib targets and binds to the intracellular catalytic kinase domain of AXL receptor tyrosine kinase and inhibits its activity.

Panbela Presents Clinical Data on Phase 1b Clinical Trial of SBP-101 in Combination with Gemcitabine and Nab-Paclitaxel in Patients with Metastatic PDA at 2021 ASCO Annual Meeting

On June 4, 2021 Panbela Therapeutics, Inc. (Nasdaq: PBLA), a clinical stage biopharmaceutical company developing disruptive therapeutics for the treatment of patients with cancer reported the presentation of interim clinical data from its Phase 1b combination therapy study of SBP-101, a proprietary polyamine analogue, with gemcitabine and nab-paclitaxel (G+A) in patients with metastatic Pancreatic Ductal Adenocarcinoma (PDA), at the American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Annual Meeting taking place June 4-8, 2021 (Press release, Panbela Therapeutics, JUN 4, 2021, View Source [SID1234583760]).

Jennifer K. Simpson, PhD, MSN, CRNP President & Chief Executive Officer of Panbela Therapeutics, commented, "We are excited to share interim data from cohort 4 and the expansion. Optimal dosing regimens were explored and the signals of efficacy reported support continued development of SBP-101 as an addition to first-line treatment for advanced PDA and as neo-adjuvant treatment for patients with potentially resectable disease."

"The conclusion of the poster is that SBP-101 may enhance first-line treatment with gemcitabine and nab-paclitaxel patients with metastatic PDA. We are encouraged by this conclusion even under sub-optimal conditions, including dose interruptions, which confounded results. Cohorts 2 and 3 did not have the dose interruptions that cohort 4 had, and cohort 2 had an objective response rate of 71%," continued Dr. Simpson. "We look forward to initiating a randomized phase 2 study in metastatic PDA mid-year."

In the response-evaluable subjects in cohort 4 + Phase 1b (N=29), 11 had treatment with SBP-101 interrupted to evaluate retinal toxicity; this may impact final efficacy results. In cohort 2 (N=7) the objective response rate (ORR) was 71%, and the disease control rate (DCR) was 100% by RECIST criteria (stable disease (SD) or better for ≥ 16 weeks). Median progression free survival (PFS) in cohort 2 was 5.63 months and median overall survival (OS) was 10.3 months compared with ORR of 48%, DCR of 70%, PFS of 5.2 months and median OS, not yet reached, in cohort 4 + 1b.

SBP-101 was well-tolerated when administered at doses and schedules tested in combination with G+A in subjects with previously untreated metastatic pancreatic adenocarcinoma. The most common Grade ≥3 adverse events (AEs) related to any study medication were neutropenia in 20 subjects (19 attributed to G+A and 1 attributed to all 3) and elevated liver function tests in 15 subjects (5 attributed to SBP-101 and 10 attributed to all 3). SBP-101-related increases in LFTs were asymptomatic in all but 2 subjects and reversed in all subjects when SBP-101 administration was interrupted and dose-reduced or discontinued. Additionally, six subjects experienced serious vision adverse events (3 possibly related to SBP-101, 1 related to gemcitabine and 2 related to all 3 based on PI assessment). All were considered by the sponsor to be possibly related to SBP-101; 5 had findings consistent with retinopathy. All future studies will exclude patients with a history of retinopathy or at risk of retinal detachment and scheduled ophthalmologic monitoring for all patients. Additionally, in future dose-finding studies screening for retinal toxicity will be included.

The company continues to plan for the initiation of a randomized trial to study SBP-101, as an addition to first-line treatment for metastatic PDA, in the middle of this year and releasing preclinical data across tumors outside of pancreatic cancer by year-end.

Additional meeting information can be found on the ASCO (Free ASCO Whitepaper) website at View Source After presenting at ASCO (Free ASCO Whitepaper), the poster will be available on the company’s website at the end of day on June 8, 2021.

About SBP-101

SBP-101 is a proprietary polyamine analogue designed to induce polyamine metabolic inhibition (PMI) by exploiting an observed high affinity of the compound for pancreatic ductal adenocarcinoma and other tumors. The molecule has shown signals of tumor growth inhibition in clinical studies of US and Australian metastatic pancreatic cancer patients, suggesting potential complementary activity with an existing FDA-approved standard chemotherapy regimen. In data evaluated from clinical studies to date, SBP-101 has not shown exacerbation of bone marrow suppression and peripheral neuropathy, which can be chemotherapy-related adverse events. Recently observed serious visual adverse events are being evaluated and patients with a history of retinopathy or at risk of retinal detachment will be excluded from future SBP-101 studies. The safety data and PMI profile observed in the current Panbela sponsored clinical trial generally provides potential support for continued evaluation of SBP-101 in a randomized clinical trial. For more information, please visit View Source

GRAIL Presents Interventional PATHFINDER Study Data at 2021 ASCO Annual Meeting and Introduces Galleri, a Groundbreaking Multi-Cancer Early Detection Blood Test

On June 4, 2021 GRAIL, Inc., a healthcare company whose mission is to detect cancer early, reported the first results from the interventional PATHFINDER study evaluating Galleri, a multi-cancer early detection (MCED) blood test. The results, presented at the 2021 ASCO (Free ASCO Whitepaper) Annual Meeting, support Galleri’s performance in clinical settings (Press release, Grail Bio, JUN 4, 2021, View Source [SID1234583644]). The company also announced today that Galleri is now available in the U.S. by prescription only.

"The interim results of PATHFINDER demonstrate that a routine blood test is capable of detecting many different cancers even before symptoms arise, an approach that has significant potential advantages," said Dr. Tomasz M. Beer, deputy director at the OHSU Knight Cancer Institute and presenting author. "Most importantly, it can detect cancers that have no recommended screening tests today, and more than two-thirds of cancers go unscreened for this reason. These results are a pivotal step toward extending early detection to many more types of cancer."

Clinical Data from PATHFINDER

PATHFINDER was designed to assess the implementation and performance of Galleri in a clinical care setting, evaluate the clinical care pathways following a "signal detected" Galleri test result, and measure the time required to achieve diagnostic resolution.

The study analyzed 6,629 individuals aged 50 years or older, an age group at elevated risk for cancer, but with no suspicion of active cancer. Compared to the general population, participants had equal or higher compliance with recommended breast and colon cancer screening tests.

In the interim analysis, an earlier version of Galleri accurately detected 29 cancers across 13 types: breast, colon or rectum, head and neck, liver and bile duct, lung, lymphoid leukemia, lymphoma, ovary, pancreas, plasma cell neoplasm, prostate, small intestine, and Waldenstrom macroglobulinemia. Of the new cancers detected, nearly 40% (9/23) were localized (stage I-II), and more than half (13/23) were detected before distant metastases (stage I-III). PATHFINDER participants will continue to be followed for 12 months, with final results expected in the first half of 2022.

"Finding cancer early, when treatment is more likely to be successful, is one of the most significant opportunities we have to reduce the burden of cancer," said Dr. Joshua Ofman, chief medical officer and head of external affairs at GRAIL. "These data suggest that, if used at scale alongside existing screening tests, the Galleri test could have a profound impact on how cancer is detected and, ultimately, on public health."

The interim PATHFINDER positive predictive value (PPV), or the likelihood that a person has cancer when a positive test result is returned, was 44.6% (95% CI: 33.2-56.7%), which is consistent with findings from GRAIL’s case-controlled Circulating Cell-free Genome Atlas (CCGA) Study.

When cancer was confirmed, Galleri’s first or second cancer signal origin prediction was 96.3% accurate (95% CI: 81.7-99.8%), with a median observed time to cancer diagnosis of 50 days. The interim analysis identified only four study-related adverse events (two related to mild anxiety before the test, one related to mild anxiety about the blood draw, and one related to mild bruising).

"Early cancer detection is critical to reducing the burden of cancer-related morbidity and mortality. These results reflect the potential real-world ability of Galleri to find deadly cancers earlier, and represent a leap forward in the effort to treat cancer more effectively," Dr. Beer said.

Data is presented by Dr. Beer, and the presentation will be available at View Source

Introducing Galleri

Galleri is now available in the U.S. by prescription only. The Galleri test is intended for use in those with an elevated risk of cancer, such as adults aged 50 or older, and as a complement to existing single cancer screening tests.

In an observational study, Galleri has demonstrated the ability to detect more than 50 types of cancer, over 45 of which lack recommended screening tests today in the U.S., with a low false positive rate of less than 1%. When cancer is detected, Galleri can determine the cancer signal origin with high accuracy. New CCGA data published today in Clinical Cancer Research, a journal of the American Association for Cancer Research (AACR) (Free AACR Whitepaper), also demonstrate the ability of GRAIL’s technology to preferentially detect cancers that are more aggressive than expected based on age, and the cancer stage and type.

The blood test is supported by what is believed to be the largest clinical study program in genomic medicine, with over 140 clinical study sites, including the Mayo Clinic, Dana-Farber Cancer Institute, Cleveland Clinic, Sutter Health, OHSU, Intermountain Healthcare, and U.S. Oncology Research.

Cancer is expected to become the leading cause of death in the United States this year, in large part because the majority of cancers are found too late when outcomes are poor. Recommended screening tests save lives, but only cover five cancer types in the U.S. In fact, 71% of cancer deaths in the U.S. have no recommended early detection screening.

For more information about Galleri, visit www.galleri.com.

REFLECTION Registry

GRAIL also announced it will establish a real-world evidence study, REFLECTION, to understand the experience and clinical outcomes of 35,000 individuals in the U.S. who are prescribed the Galleri test from a healthcare provider. This follows an announcement last fall that Galleri will be offered to eligible patients in the United Kingdom (UK) later this year as part of a partnership with the UK National Health Service to support its Long Term Plan for earlier cancer diagnoses.

Important Safety Information

Galleri is recommended for use in adults with an elevated risk for cancer, such as those aged 50 or older. The Galleri test does not detect all cancers and should be used in addition to routine cancer screening tests recommended by a healthcare provider. Galleri is intended to detect cancer signals and predict where in the body the cancer signal is located.

Results should be interpreted by a healthcare provider in the context of medical history, clinical signs, and symptoms. A test result of "Cancer Signal Not Detected" does not rule out cancer. A test result of "Cancer Signal Detected" requires confirmatory diagnostic evaluation by medically established procedures (e.g., imaging) to confirm cancer.

If cancer is not confirmed with further testing, it could mean that cancer is not present or testing was insufficient to detect cancer, including due to the cancer being located in a different part of the body. False positive (a cancer signal detected when cancer is not present) and false negative (a cancer signal not detected when cancer is present) test results do occur. Galleri is prescription only.

Laboratory/Test Information

GRAIL’s clinical laboratory is certified under the Clinical Laboratory Improvement Amendments of 1988 (CLIA) and accredited by the College of American Pathologists (CAP). The Galleri test was developed, and its performance characteristics were determined by GRAIL. The Galleri test has not been cleared or approved by the U.S. Food and Drug Administration. GRAIL’s clinical laboratory is regulated under CLIA to perform high-complexity testing. The Galleri test is intended for clinical purposes.