On December 4, 2024 Plus Therapeutics, Inc. (Nasdaq: PSTV) ("Plus" or the "Company"), a clinical-stage pharmaceutical company developing targeted radiotherapeutics with advanced platform technologies for central nervous system (CNS) cancers, reported that it will present data at the 2024 San Antonio Breast Cancer Symposium, December 10-13, 2024 in San Antonio, Texas (Press release, Plus Therapeutics, DEC 4, 2024, View Source [SID1234648798]).

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Presentation:

Title Rhenium (186Re) obisbemeda (rhenium nanoliposome,186RNL) for the treatment of leptomeningeal metastases (LM): Update on Phase 1 dose escalation (Abstract Number: SESS-2271, Presentation ID: PS14-01)

Presenter Andrew Brenner, M.D., Ph.D., Professor and Kolitz / Zachry Endowed Chair Neuro-Oncology Research; Co-Leader, Experimental and Developmental Therapeutics Program, University of Texas Health, Science Center at San Antonio

Date/Time Friday, 13 December 2024 7:30-8:30 a.m. CST

Location Stars at Night Ballroom 3-4, Henry B. Gonzalez Convention Center

About Leptomeningeal Metastases (LM)

LM is a rare complication of cancer in which the primary cancer spreads to the cerebrospinal fluid (CSF) and leptomeninges surrounding the brain and spinal cord. All malignancies originating from solid tumors, primary brain tumors, or hematological malignancies have this LM complication potential with breast cancer as the most common cancer linked to LM, with 3-5% of breast cancer patients developing LM. Additionally, lung cancer, GI cancers and melanoma can also spread to the CSF and result in LM. LM occurs in approximately 5% of people with cancer and is usually terminal with 1-year and 2-year survival of just 7% and 3%, respectively. The incidence of LM is on the rise, partly because cancer patients are living longer and partly because many standard chemotherapies cannot reach sufficient concentrations in the spinal fluid to kill the tumor cells, yet there are no FDA-approved therapies specifically for LM patients, who often succumb to this complication within weeks to several months, if untreated.

About Rhenium (186Re) obisbemeda

Rhenium (186Re) obisbemeda is a novel injectable radiotherapy specifically formulated to deliver direct targeted high dose radiation in CNS tumors in a safe, effective, and convenient manner to optimize patient outcomes. Rhenium (186Re) obisbemeda has the potential to reduce off target risks and improve outcomes for CNS cancer patients, versus currently approved therapies, with a more targeted and potent radiation dose. Rhenium-186 is an ideal radioisotope for CNS therapeutic applications due to its short half-life, beta energy for destroying cancerous tissue, and gamma energy for real-time imaging. Rhenium (186Re) obisbemeda is being evaluated for the treatment of recurrent glioblastoma and leptomeningeal metastases in the ReSPECT-GBM and ReSPECT-LM clinical trials. ReSPECT-GBM is supported by an award from the National Cancer Institute (NCI), part of the U.S. National Institutes of Health (NIH), and ReSPECT-LM is funded by a three-year $17.6M grant by the Cancer Prevention & Research Institute of Texas (CPRIT).

On December 04, 2024 Vincerx Pharma, Inc. (Nasdaq: VINC), a biopharmaceutical company aspiring to address the unmet medical needs of patients with cancer through paradigm-shifting therapeutics, reported plans to implement cost-controls and explore strategic alternatives to support advancing the Phase 1 study of VIP943, the Company’s novel CD123-targeted antibody-drug conjugate (ADC) developed with the Company’s next-generation VersAptx platform (Press release, Vincerx Pharma, DEC 4, 2024, https://investors.vincerx.com/news-releases/news-release-details/vincerx-pharma-implement-cost-controls-support-advancing-phase-1 [SID1234648796]).

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"We believe VIP943 is a highly differentiated and valuable asset, and we remain fully committed to advancing this program," said Ahmed Hamdy, M.D., Chief Executive Officer. "As we shared in October, the Phase 1 dose-escalation study of VIP943 has demonstrated encouraging safety, efficacy, and tolerability. Of nine evaluable patients, one patient whose acute myeloid leukemia (AML) relapsed post-transplant achieved a CRi and one patient with higher-risk myelodysplastic syndrome (HR-MDS) achieved a CRL. Notably, since October, the patient with CRi has continued to improve, with their most recent bone marrow results showing only 1% cancer cells. This patient has now been on the study for seven months and counting. Monotherapy responses in post-transplant patients are rare, so we believe this type of response highlights the potential of VIP943 in this challenging population and supports the next-generation technology of our VersAptx platform."

Dr. Hamdy continued, "Our immediate focus is to give the program time to generate more data, with results from additional cohorts expected by early Q1 2025. To support this, we are implementing significant cost-cutting measures to focus resources on VIP943’s advancement. Additionally, we will begin exploring strategic alternatives to complement our ongoing fundraising efforts, with the goal of maximizing the value of the VIP943 program and our VersAptx platform."

As part of its review of potential strategic alternatives, Vincerx will consider options such as out-licensing, merger and acquisition opportunities, including reverse mergers, sales of assets and technologies, and other transactions. To streamline operations and focus resources, Vincerx will implement a significant reduction in force of approximately 55%. There can be no assurance that the exploration of strategic alternatives will result in any agreements or transactions, or as to the timing of any such agreements or transactions. The Company is in the process of engaging a financial advisor to assist in the strategic review process.

Vincerx has not set a timetable for completion of the evaluation process and does not intend to disclose further developments or guidance on the status of its exploration of strategic alternatives unless and until it is determined that further disclosure is appropriate or necessary.

As of October 31, 2024, the Company had approximately $8.4 million in cash, cash equivalents, and marketable securities.

About VIP943
VIP943, the first ADC from the VersAptx platform, consists of an anti-CD123 antibody, a unique linker cleaved intracellularly by legumain, and a novel kinesin spindle protein inhibitor (KSPi) payload enhanced with Vincerx’s CellTrapper technology. Vincerx’s proprietary effector chemistry (linker + payload) was designed to reduce non-specific release of the payload and ensure payload accumulation in cancer cells versus healthy cells. The increased therapeutic index has the potential to address challenges associated with many ADCs by improving efficacy and reducing severe toxicities. VIP943 is being evaluated in a Phase 1 dose-escalation trial in patients with relapsed/refractory AML, HR-MDS, and B-ALL who have exhausted standard therapeutic options (NCT06034275).

About VersAptx Platform
VersAptx is a versatile and adaptable next-generation bioconjugation platform. The modular nature of this innovative platform allows the combination of different targeting, linker, and payload technologies to develop bespoke bioconjugates that address different cancer biologies. With this platform, (i) antibodies and small molecules can be used to target different tumor antigens, (ii) linkers can be designed to reduce non-specific release of the payload, cleave intracellularly or extracellularly, and conjugate to single or multiple payloads, and (iii) payloads can be designed with reduced permeability using our CellTrapper technology to ensure accumulation in cancer cells or to be permeable for release in the tumor microenvironment. The VersAptx platform allows the development of bioconjugates designed to address the safety and efficacy challenges of historical ADCs.

On December 4, 2024 Sonnet BioTherapeutics Holdings, Inc. (the "Company" or "Sonnet") (NASDAQ: SONN), a clinical-stage company developing innovative targeted immunotherapeutic drugs, reported the publication of extensive discovery, development and preclinical data on SON-1010 demonstrating its mechanism of action in Frontiers in Immunology (Press release, Sonnet BioTherapeutics, DEC 4, 2024, View Source [SID1234648794]). SON-1010, Sonnet’s lead proprietary drug candidate, combines the Company’s fully human albumin-binding (FHAB) construct with a native single-chain IL-12 sequence to simplify delivery of the cytokine systemically. The paper entitled "SON-1010: An Albumin-binding IL-12 Fusion Protein with Improved Cytokine Half-life Targets Tumors and Enhances Therapeutic Efficacy," details the identification of single-chain variable fragments (scFv) from a human phage display library that bound human, mouse, and cynomolgus macaque serum albumin, both at physiologic and acidic conditions. The composition of matter patent claims on the FHAB domain and SON-1010 fusion protein have been issued in a number of major markets, including but not limited to the U.S., China, Japan, Russia and New Zealand, and expire between 2038 and 2039. Additionally, the Company announced the release of a "What This Means" segment to discuss the publication which is now available here.

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The extensive discovery program included putting the scFv domains through a series of steps to identify strongly binding molecules that bind tightly over a 5.8 to 7.2 pH range and do not interfere with the normal physiology of albumin to bind the neonatal Fc receptor (FcRn). This resulted in having prolonged half-life in serum and binding to SPARC/GP60, which allows albumin to target the tumor microenvironment (TME). A final molecule was selected and a single mutation was introduced that minimizes the potential for immunogenicity. This FHAB domain was characterized, and manufacturing processes were developed to prepare Sonnet’s first drug candidate for the clinic. Once identified, the murine form of mIL12-FHAB was shown to be much more efficient at blocking tumor growth compared to murine IL-12, while stimulating significant and prolonged IFNγ production with minimal toxicity. Biodistribution studies in mice confirmed tumor delivery and toxicological studies in non-human primates allowed the initiation of the clinical trials.

"We are pleased to share these findings, which is the first time we have fully described the extensive research that was required to discover and develop our signature FHAB platform," said Pankaj Mohan, Ph.D., Founder and CEO of Sonnet. "This work lays the foundation for all of the products on our platform that are designed to safely extend the half-life of cytokines and deliver them to the tumor, where they can convert the immunological response from ‘cold’ to ‘hot’ and potentially realize the promise of immunotherapy."

"IL-12 and related compounds have been extensively studied in cancer and immunotherapy indications. However, recombinant interleukins have had limited clinical success owing to their short circulating half-life, inefficient TME targeting, and requirement for frequent dosing, often leading to substantial systemic toxicities," added John Cini, Ph.D. Co-Founder and CSO of Sonnet. "We believe we have addressed these issues with our discovered platform, having utilized a molecule that can be applied in any solid tumor type that concentrates albumin, such as sarcoma, gynecologic, and gastrointestinal cancers. We intend to explore new compounds as well, as funds become available."

The Company is currently conducting a Phase 1 clinical trial of SON-1010 (IL12-FHAB) as a monotherapy in adult patients with advanced solid tumors (SB101; NCT05352750). The Company expects to report safety data from this study in Q4 2024. SON-1010 is being evaluated in an ongoing Phase 1/2a study through a Master Clinical Trial and Supply Agreement, along with ancillary Quality and Safety Agreements, with Roche in combination with atezolizumab (Tecentriq) for the treatment of Platinum-Resistant Ovarian Cancer (PROC).

On December 4, 2024 Nykode Therapeutics ASA (OSE: NYKD), a clinical-stage biopharmaceutical company dedicated to the discovery and development of novel immunotherapies, reported new data from its mRNA-based neoantigen vaccine platform for individualized cancer immunotherapy, presented at the Personalized Cancer Vaccines Summit in Boston (Press release, Nykode Therapeutics, DEC 4, 2024, View Source [SID1234648789]). The findings highlight the platform’s ability to elicit robust and durable immune responses.

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Nykode has previously demonstrated that the neoantigen vaccine induces strong, CD8-biased T cell responses, targeting the majority of the encoded neoantigens. The novel pre-clinical data examines the kinetics of individual neoantigens, showing distinct dose-response patterns. The findings underscore the importance of an optimal vaccination schedule, highlighting differentiated responses to early versus late boost vaccinations.

The vaccine’s ability to provide complete tumor protection with prophylactic administration has been demonstrated. Now, new data reveal that this tumor protection is durable: a single vaccination provided partial long-term protection, while two vaccinations achieved complete and sustained protection at day 90.

"These data reinforce the robust and durable immune responses our neoantigen vaccine generates also in a mRNA format, further validating its potential as a personalized cancer immunotherapy platform," said Agnete Fredriksen, Chief Scientific Officer and Co-founder of Nykode Therapeutics.

Details for the Nykode Therapeutics’ presentation are as follows:

Title: Nykode’s Individualized Cancer Vaccine Approach Across DNA and mRNA

Time & Date: 1:30pm ET, December 4, 2024

The presentation is available on the Nykode website at View Source

About VB10.NEO

VB10.NEO is a proprietary individualized neoantigen vaccine in development for the treatment of locally advanced or metastatic solid tumors. The vaccine is designed to be produced on-demand according to the neoantigen profile of an individual patient. Neoantigens are proteins generated by tumor-specific mutations not present in normal tissues and are thus an attractive target for cancer immunotherapy as they may be recognized as foreign by the immune system. VB10.NEO has been evaluated in multiple indications in two clinical trials. It has been shown to be generally well tolerated and with an ability to generate uniquely broad patient- and tumor-specific long-lasting immune responses.

On December 4, 2024 Flamingo Therapeutics ("Flamingo") reported that an abstract has been selected for presentation at the 66th Annual ASH (Free ASH Whitepaper) Annual Meeting and Exposition, being held in San Diego, CA from December 7-9, 2024 (Press release, Flamingo Therapeutics, DEC 4, 2024, View Source;utm_medium=rss&utm_campaign=flamingo-therapeutics-announces-poster-presentation-on-aml-phase-1-iit-study-at-ash-2024 [SID1234648788]).

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The abstract, selected for a poster presentation, is a Trials-in-Progress presentation of a Phase 1 investigator-initiated study of danvatirsen monotherapy followed by danvatirsen combination with venetoclax in relapsed/refractory AML and intermediate/high risk MDS (NCT05986240). The study is being conducted at Albert Einstein / Montefiore Medical Center in New York City and MD Anderson Cancer Center in Houston.

Poster presentation details are as follows:

Title: "A Phase 1 Study Investigating the Safety and Efficacy of Danvatirsen As Monotherapy Followed by Combination with Venetoclax in Patients with Relapsed/Refractory MDS and AML"
Session Date: Monday, December 9, 2024
Presenting Author: Dr. Aditi Shastri