On November 2, 2023 HotSpot Therapeutics, Inc., a biotechnology company pioneering the discovery and development of oral, small molecule allosteric therapies targeting regulatory sites on proteins referred to as "natural hotspots," reported that it will present preclinical data from the Company’s highly differentiated mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT1) program in an oral presentation at the 2023 American Society of Hemotology (ASH) (Free ASH Whitepaper) Annual Meeting, taking place December 9-12, 2023, in San Diego, CA (Press release, HotSpot Therapeutics, NOV 2, 2023, View Source [SID1234636832]).

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MALT1 is a component of the CARD11-BCL10-MALT1 (CBM) protein complex, which serves as a key regulator of NFkB signaling in cells, including B and T cells. MALT1 is implicated in a range of hematological malignancies, including Non-Hodgkin’s lymphoma, as well as other lymphomas and selected solid tumors. Leveraging our proprietary Smart Allostery platform, HotSpot has developed first-in-class small molecules designed to selectively inhibit the scaffolding function of MALT1, a dominant driver of the NFkB pathway. This oral presentation will describe the differentiated preclinical profile for HotSpot’s scaffolding inhibitor, including the potential for an improved efficacy and safety profile versus traditional MALT1 inhibitors that target protease function. HotSpot plans to file an IND for HST-1021, its Development Candidate, in 2024.

Presentation details are as follows:

Title: Discovery of Novel, First-in-Class Allosteric Modulators of MALT1 Scaffolding Function with Differentiated Pharmacology for NFκB-Driven Malignancies
Session Name: 605. Molecular Pharmacology and Drug Resistance: Lymphoid Neoplasms: Novel Therapeutic Approaches in Lymphoma and Multiple Myeloma
Session Date and Time: Sat., Dec., 9, 2023, 9:30-11:00 AM PT
Presentation Time: 10:15 AM PT
Location: Manchester Grand Hyatt San Diego, Grand Hall D
Publication Number: 52

On November 2, 2023 Precision Biologics, a clinical stage therapeutics company whose proprietary platform has produced highly targeted monoclonal antibodies, reported that it will deliver a poster presentation on preliminary results of the ongoing phase 2 trial, combining NEO-201 with pembrolizumab for the treatment of patients resistant to prior checkpoint inhibitor therapy at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) 38th Annual Meeting at the San Diego Convention Center in San Diego, CA on November 3rd, 2023 (Press release, Precision Biologics, NOV 2, 2023, View Source [SID1234636831]).

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Poster title: Post-treatment neutrophil-to-lymphocyte ratio and gMDSCs as independent prognostic factors for treatment efficacy with monoclonal antibody NEO-201 and pembrolizumab. Click here for a link to the poster.

NEO-201 specifically binds to and kills cells expressing the truncated Core-1 O-glycan. Truncated Core-1 O-glycan expression is found in solid tumors and certain blood cancers. Additionally, NEO-201 binds to and mediates the killing of immune suppressor cells, including regulatory T cells (Tregs) and granulocytic myeloid-derived suppressor cells (gMDSCs), which are thought to diminish the efficacy of cancer immunotherapy.

Infiltration of the tumor microenvironment (TME) by gMDSCs and Tregs is one of the reasons for the development of resistance to checkpoint inhibitors. Depletion of circulating gMDSCs and Tregs may prevent their accumulation in the TME and reverse the tumor resistance to checkpoint inhibitors.

This study demonstrates that NEO-201 binds to gMDSCs in PBMCs from cancer patients. This poster also reports that following treatment, heavily pre-treated patients with durable stable disease showed a reduction of circulating gMDSCs compared to baseline levels. Additional data from the ongoing Phase 2 trial was recently presented at CRI-ENCI-AACR 7th International Cancer Immunotherapy Conference (CIMT) (Free CIMT Whitepaper) Sept 22, 2023, Milan, Italy. This data demonstrated that NEO-201 reduces the quantity of regulatory T cells in PBMCs of cancer patients and this reduction is associated with stabilization of disease. Click Here for a link to the poster from the CRI-ENCI-AACR meeting.

This Phase 2 study is currently enrolling patients with metastatic Non-Small Cell Lung Cancer (NSCLC), Head and Neck Cancers, Endometrial Cancer and Cervical Cancer, who have already progressed on prior checkpoint inhibitor therapy (including prior Keytruda) at the National Cancer Institute, part of the National Institutes of Health, Bethesda, MD. (View Source)

Precision Biologics’ poster will be presented in person at the San Diego Convention Center, San Diego, CA, on Friday November 3rd, 2023. Please stop by poster # 879 for further details at Lunch (12–1:30 p.m.) and Poster Reception (5:10–6:40 p.m.).

On November 2, 2023 Intensity Therapeutics, Inc. (Nasdaq: INTS), a clinical-stage biotechnology company focused on the discovery and development of proprietary, novel immune-based intratumoral cancer therapies designed to kill tumors and increase immune system recognition of cancers, reported that safety, tolerability and efficacy data from IT-01, the company’s ongoing Phase 1/2 clinical trial of INT230-6, either as a monotherapy or in combination with ipilimumab in patients with relapsed, refractory and metastatic sarcomas, was presented at the Connective Tissue Oncology Society 2023 Annual Meeting being held in Dublin, Ireland from November 1-4, 2023 (Press release, Intensity Therapeutics, NOV 2, 2023, View Source [SID1234636830]). The poster will be displayed for the duration of the Annual Meeting.

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Abstract Title: INTRATUMORAL INT230-6 (CISPLATIN, VINBLASTINE, SHAO) ALONE OR WITH IPILIMUMAB PROLONGED SURVIVAL WITH FAVORABLE SAFETY AND IMMUNE ACTIVATION IN ADULTS WITH REFRACTORY SARCOMAS (NCT 03058289)
Presenter: Christian F. Meyer, M.D., Ph.D., M.S., Johns Hopkins Sydney Kimmel Cancer Center
Abstract Number: 1574238

Copies of the presentation materials are available on Intensity’s website on the publications, papers and posters page.

Christian Frederick Meyer, M.D., Ph.D., M.S., is an Assistant Professor of Oncology at the Sidney Kimmel Cancer Center at Johns Hopkins University. Dr. Meyer is an investigator for Intensity’s Phase 1/2 clinical trial of INT230-6 and the presenter of the data at CTOS. Dr. Meyer has placed a number of his sarcoma patients into the study due to the demonstrated significant survival prolongation effects of INT230-6.

"The data presented at CTOS highlights the true potential of INT230-6 as both a monotherapy or in combination with ipilimumab. INT230-6 showed an extensive increase in overall survival in metastatic patients over expected results for the heavily pretreated and diverse sarcoma population with an increase of nearly 15 months compared to a synthetic control. Approval of INT230-6, a locally delivered therapy, could be a paradigm-changing treatment for metastatic cancers," said Lewis H. Bender, President and Chief Executive Officer of Intensity. "INT230-6 can fully saturate a tumor with cytotoxic agents to begin apoptosis and cause necrosis when delivered intratumorally, resulting in immune activation consisting of dendritic and T-cell influx to the tumor all while maintaining a favorable safety profile. We have begun the preparations for a Phase 3 study of INT230-6 as a monotherapy and look forward to providing updates on the trial in the future."

IT-01, now complete, was an open-label Phase 1/2 study of INT230-6 in adults with locally advanced, unresectable or metastatic solid tumors, including sarcoma. INT230-6 dose was determined by a target injected tumor’s diameter or volume and administered intratumorally once every two weeks for up to 5 doses with regular maintenance treatment either alone or in combination with ipilimumab at 3 mg/kg every three weeks for 4 doses. The primary endpoint was safety and approximately 90% of subjects had low grade adverse events.

Efficacy Data:

When compared to synthetic controls, INT230-6 alone extended survival in refractory soft tissue sarcoma subjects by approximately 14.9 months. Dosing higher amounts of INT230-6 relative to a patient’s presenting total tumor burden showed increased survival when compared to the synthetic control. An INT230-6 dose relative to the presenting tumor burden of ≥ 40% further improved overall survival and the addition of ipilimumab may improve survival further.

Median overall survival of INT230-6 was ~14.9 months longer than a synthetic control that was developed to predict survival of the enrolled sarcoma population.
Median survival of synthetic control was about 6.8 months.
The INT230-6 Disease Control Rate was 93% in subjects who received at least one dose of INT230-6 as monotherapy.
Safety Data:

Data to date indicate that INT230-6 has a favorable safety profile and is well tolerated.

The majority of treatment-emergent adverse events (TEAEs) were grade 1 or 2 primarily localized pain, fatigue, and nausea.
Two monotherapy and one combination subject experienced a grade 3 adverse event (AE)
There were no reported grade 4 or 5 AEs.
About INT230-6

INT230-6, Intensity’s lead proprietary investigational product candidate, is designed for direct intratumoral injection. INT230-6 was discovered using Intensity’s proprietary DfuseRx℠ technology platform. The drug is composed of two proven, potent anti-cancer agents, cisplatin and vinblastine, and a penetration enhancer molecule (SHAO) that helps disperse potent cytotoxic drugs throughout tumors for diffusion into cancer cells. These agents remain in the tumor resulting in a favorable safety profile. In addition to local disease control, direct killing of the tumor by INT230-6 releases a bolus of neoantigens specific to the patient’s malignancy, leading to engagement of the immune system and systemic anti-tumor effects. Importantly, these effects are mediated without the immunosuppression of concomitant systemic chemotherapy.

On November 2, 2023 Akeso (9926.HK) reported that its collaboration and licensing partner, Summit Therapeutics Inc. (NASDAQ: SMMT) ("Summit") will present data for the novel, potential first-in-class investigational bispecific antibody, ivonescimab (AK112/SMT112), at the 38th Annual Meeting of the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) in San Diego, CA (Press release, Akeso Biopharma, NOV 2, 2023, View Source [SID1234636829]). The poster with updated data describing ivonescimab’s mechanism of action will be displayed on Saturday November 4, 2023, from 11:55am to 1:25pm Pacific Time. This mechanism of action of ivonescimab was also presented at the 2023 AACR (Free AACR Whitepaper)-NCI-EORTC (American Association for Cancer Research-National Cancer Institute-European Organization for Research and Treatment of Cancer) Conference on Molecular Targets and Cancer Therapeutics.

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Ivonescimab is a novel, potential first-in-class investigational bispecific antibody combining the effects of immunotherapy via a blockade of PD-1 with the anti-angiogenesis effects associated with blocking VEGF into a single molecule. The poster describes how ivonescimab displays unique cooperative binding to each of its intended targets with higher affinity when in the presence of both PD-1 and VEGF.

This could differentiate ivonescimab as there is potentially higher expression (presence) of both PD-1 and VEGF in tumor tissue and the tumor microenvironment (TME) as compared to normal tissue in the body. Ivonescimab’s tetravalent structure (four binding sites) enables higher avidity (accumulated strength of multiple binding interactions) in the tumor microenvironment with over 18 fold increased binding affinity to PD-1 in the presence of VEGF in vitro, and over 4 times increased binding affinity to VEGF in the presence of PD-1 in vitro. This tetravalent structure, the intentional novel design of the molecule, and bringing these two targets into a single bispecific antibody with cooperative binding qualities have the potential to direct ivonescimab to the tumor tissue versus healthy tissue. The intent of this design is to improve upon previously established efficacy thresholds, in addition to side effects and safety profiles associated with these targets.

The marketing application for one indication of ivonescimab was accepted by the Center for Drug Evaluation (CDE) of the China National Medical Products Administration (NMPA) with priority review. Currently, there are four registrational phase III clinical trials being conducted globally, which include three head-to-head trials with PD-1 monoclonal antibody as the positive control drug, and two international multicenter clinical trials.

Summit has begun its clinical development of ivonescimab in order to establish its efficacy and safety in two proposed NSCLC indications:

Ivonescimab combined with chemotherapy in patients with epidermal growth factor receptor (EGFR)-mutated, locally advanced or metastatic non-squamous NSCLC who have progressed after treatment with a third-generation EGFR tyrosine kinase inhibitor (TKI) (HARMONi trial)
Ivonescimab combined with chemotherapy in first-line metastatic squamous NSCLC patients (HARMONi-3 trial)
Earlier this year, the first patient was treated in Summit’s license territories in the Phase III HARMONi clinical trial. Summit has opened clinical trial sites in the HARMONi-3 trial and expects to begin dosing patients in the current fiscal quarter.

About Ivonescimab (PD-1/VEGF bispecific antibody)
Ivonescimab is a potential first-in-class investigational PD-1/VEGF bi-specific antibody discovered by Akeso. It combines the effects of immunotherapy via a blockade of PD-1 with the anti-angiogenesis effects associated with blocking VEGF into a single molecule. Ivonescimab is currently engaged in multiple Phase III clinical trials worldwide.

In December 2022, Akeso entered into a collaboration and license agreement for up to US$5 billion with Summit Therapeutics ("Summit"). Akeso out-licensed to Summit exclusive rights to ivonescimab (PD-1/VEGF) for the development and commercialization in the United States, Canada, Europe, and Japan. Akeso will retain development and commercialization rights for the rest of the world including China. Ivonescimab is known as AK112 for Akeso’ R&D code at China and Australia, and as SMT112 for Summit’s license territories.

On November 2, 2023 Ryvu Therapeutics [WSE:RVU], a clinical-stage drug discovery and development company focusing on novel small molecule therapies that address emerging targets in oncology, reported that clinical and preclinical data on RVU120, a selective CDK8/19 inhibitor, will be presented on four posters at the 65th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting & Exposition, which is being held on December 9 –12, 2023 in San Diego, California (Press release, Ryvu Therapeutics, NOV 2, 2023, View Source [SID1234636828]).

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"At this year’s ASH (Free ASH Whitepaper) conference, we are pleased to present updated clinical and preclinical data that highlight the potential of RVU120 to address hematologic malignancies," said Hendrik Nogai, M.D., Chief Medical Officer of Ryvu Therapeutics. "RVU120 continues to show single-agent clinical activity in patients with AML and HR-MDS, along with a tolerable safety profile. Notably, several patients achieved a reduction of blasts in the bone marrow including one complete response. We also observed hematologic improvement supporting RVU120’s further development as a treatment for patients with LR-MDS and myelofibrosis. In addition, evidence that RVU120 has cytotoxic and differentiating effects on leukemic stem cells highlight its potential as frontline therapy in AML."

Based on these data and in line with prior guidance, Ryvu’s development plan for RVU120 includes initiation of Phase II studies in AML/HR-MDS as a monotherapy and in combination, in myelofibrosis, and an investigator-initiated trial in LR-MDS. Initiation of Ryvu-sponsored studies in AML is planned in Q4 2023, and in the LR-MDS and myelofibrosis studies in H1 2024.

"Our internal Clinical Committee and a global network of external experts have thoroughly assessed the clinical and preclinical results of RVU120, and have recognized its significant potential in the treatment of multiple hematological diseases. This recognition is a crucial element in the recently presented RVU120 development plans," added Hendrik Nogai.

Details on the poster presentations are as follows:

Abstract Title: "Safety and Efficacy Results from CLI120-001 a Phase 1 Study in RR-AML and HR-MDS: Update from Higher Dose Levels"
Session Name: 616. Acute Myeloid Leukemias: Investigational Therapies, Excluding Transplantation and Cellular Immunotherapies: Poster II
Session date and time: Sunday, December 10, 2023, 6:00 PM – 8:00 PM PST
Poster Number: 2913

Updated higher dose level Phase I data on RVU120 in patients with relapsed/refractory (r/r) acute myeloid leukemia (AML) or high-risk myelodysplastic syndrome (HR-MDS) demonstrate clinical activity with a tolerable safety profile. 12 of 24 evaluable patients showed clinically relevant benefit, including four blast reductions to <5% in the bone marrow: one complete response and three marrow complete responses in patients with HR-MDS. Three additional patients treated across different dose levels experienced a sustained BM blast reduction, and five patients achieved hematologic improvements. Dose-escalation data continues to demonstrate relevant target inhibition at doses of 110 mg and higher.

Abstract Title: "Preclinical and Clinical Evidence for Erythroid-Stimulating Activity of RVU120 CDK8/19 Inhibitor in AML and MDS"
Session Name: 604. Molecular Pharmacology and Drug Resistance: Myeloid Neoplasms: Poster II
Session date and time: Sunday, December 10, 2023, 6:00 PM – 8:00 PM PST
Poster Number: 2800

RVU120-induced erythroid differentiation was studied in primary malignant stem cells from MDS patients and in a stem cell model. To date, erythroid improvement has been observed in five evaluable patients in the ongoing Phase Ib study. Bulk RNA-seq analysis confirmed broad transcriptomic changes in the bone marrow (BM) of selected patients after treatment compared to the pre-dose baseline levels. Robust induction of genes involved in erythroblast differentiation and hemoglobin metabolism genes were observed in two AML with myelodysplasia-related changes (AML-MRC) and two AML patients. These clinical and preclinical data strongly support the further development of RVU120 as a novel agent for patients with LR-MDS who are transfusion-dependent and failing first-line therapy.

Abstract Title: "Targeting CDK8/CDK19 to Disrupt Leukemic Stem Cell-like Population in Acute Myeloid Leukemia: Exploring RVU120 As a Promising Frontline Therapy"
Session Name: 604. Molecular Pharmacology and Drug Resistance: Myeloid Neoplasms: Poster III
Session date and time: Monday, December 11, 2023, 6:00 PM – 8:00 PM PST
Poster Number: 4175

Leukemic stem cells (LSC) are a small subset of AML cells that can resist therapy and cause relapse. To achieve a cure for patients, it is essential to eliminate LSCs. In preclinical models, RVU120 displayed cytotoxic and differentiating effects on well-characterized LSC populations. Single-cell studies further revealed RVU120’s ability to inhibit LSC-enriched populations and induce differentiation. In summary, RVU120 emerges as a frontline candidate in AML treatment, addressing therapeutic failures caused by persistent LSCs.

Abstract Title: "Novel Clinically Useful Inhibitor of Mediator Complex, RVU120, Relieves Differentiation Block in MDS/AML"
Session Name: 636. Myelodysplastic Syndromes—Basic and Translational: Poster II
Session date and time: Sunday, December 10, 2023, 6:00 PM – 8:00 PM PST
Poster Number: 3225

Data demonstrate the potential of inhibiting overexpressed mediator complex proteins, including CDK8, to address differentiation blocks and resulting anemias in MDS/AML. Treatment of primary cells in bone marrow collected from MDS and AML patients with RVU120 led to increased erythroid differentiation, as evidenced by changes in the expression of erythroid differentiation markers, including increased CD71 and Glycophorin A expression. These studies provide supportive evidence for RVU120 as a drug candidate in transfusion-dependent MDS/AML patients.