Healx Announces First Patient Dosed in Phase 2 Trial Evaluating HLX-1502 for the Treatment of Neurofibromatosis Type 1

On February 24, 2025 Healx, an AI-enabled, clinical-stage biotech company dedicated to rare diseases, reported the first patient has been dosed in INSPIRE-NF1, a Phase 2 trial evaluating the safety and efficacy of HLX-1502, an oral investigational therapy, in patients with neurofibromatosis type 1 (NF1) (Press release, Healx, FEB 24, 2025, View Source [SID1234650496]).

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NF1 is a debilitating rare genetic disorder that causes tumours to form along nerves, often manifesting in childhood. It affects approximately one in 2,500 individuals worldwide and can lead to severe complications, including pain, disfigurement, and malignancies. Despite its impact, treatment options remain limited, with many patients facing invasive surgeries or therapies with severe side effects.

A Potential Breakthrough for NF1 Patients

"This trial represents an important step in determining the potential of HLX-1502 as a treatment option for patients," said Simone Manso, head of neurofibromatosis therapy development at Healx. "There are no treatments for many NF1 symptoms; current treatments for NF1 plexiform neurofibromas, such as surgery and MEK inhibitors, are helpful but come with their own set of trade-offs, in terms of lasting complications and side effects. There is a need for new treatments for the NF1 community that balance effectiveness and safety. Evaluating HLX-1502 in this context is a key focus of our research efforts. We are grateful for the support from the Children’s Tumor Foundation, a vital partner in this journey, and to the Neurofibromatosis Clinical Trials Consortium for making this clinical trial a reality."

HLX-1502 was discovered using Healx’s proprietary AI platform, which accelerates the identification of potential drug candidates. The therapy has received Fast Track, Orphan Drug, and Rare Pediatric Disease designations from the U.S. Food and Drug Administration, underscoring its potential significance for the NF1 community.

Driving a New Era in NF1 Treatment Innovation

"This is much more than a company milestone—it represents a new hope for the NF1 community," said Tim Guilliams, Ph.D., co-founder and CEO of Healx. "For too long, patients have had limited treatment options that come with serious trade-offs. HLX-1502 is being evaluated as a potential treatment for NF1, with the goal of providing an alternative to existing MEK inhibitors, which have known side effects. If successful, this could mark the beginning of a paradigm shift in NF1 care—one that not only improves patient lives today but also paves the way toward a future where patients no longer have to choose between treatment effectiveness and quality of life."

Partnering for Patient Impact

"We are excited about the launch of this trial and what it could mean for those affected by NF1 worldwide," said Michael Fisher, M.D., director of the NF Program and chief of the Neuro-Oncology Section at the Children’s Hospital of Philadelphia, and the group chair of the NF1 Clinical Trials Consortium. "Our consortium, consisting of 24 clinical centers across the United States and Australia, is committed to pushing NF research forward and finding new therapies for individuals with neurofibromatosis and schwannomatosis. Healx’s innovative approach to treatment discovery gives us renewed hope for continued meaningful progress."

The NF1 Clinical Trials Consortium has an Operations Center based at the University of Alabama at Birmingham (UAB), led by Girish Dhall, M.D., and Karen Cole-Plourde, and a Data Coordinating Center at CHOP led by Richard Aplenc, M.D., Ph.D.

About the INSPIRE-NF1 Study

INSPIRE-NF1 is a Phase 2, open-label, single-arm study evaluating the safety and efficacy of HLX-1502 in NF1 patients with plexiform neurofibromas (PNs). These aggressive tumours can lead to severe complications, including functional impairments and malignant transformation. The trial is enrolling approximately 20 patients in the U.S., focusing on key outcome measures such as tumour response rate, safety and tolerability, and pharmacokinetics. Additional information is available at clinicaltrials.gov (NCT06541847).

About Neurofibromatosis Type 1 (NF1)

NF1 is a rare genetic disorder that predisposes individuals to develop multiple tumours, affecting roughly 3 million people worldwide. Plexiform neurofibromas can cause severe disability, while cutaneous neurofibromas—benign but often numerous tumours—result in significant cosmetic and psychological distress. Treatment options are extremely limited, highlighting an urgent unmet need.

OS Therapies Forms Subsidiary OS Drug Conjugates and Initiates Review of Strategic Options for its tunable ADC & Drug Conjugates Platforms

On February 24, 2025 OS Therapies, Inc. (NYSE-A: OSTX), a clinical-stage biotechnology company advancing immunotherapies and targeted drug conjugates for cancer treatment, reported the formation of subsidiary OS Drug Conjugates (OSDC) (Press release, OS Therapies, FEB 24, 2025, View Source [SID1234650495]). The formation of OSDC coincides with formal strategic options initiatives to create value from the Company’s leading-edge, patented silicone dioxide-based, pH sensitive tunable antibody drug conjugates (tADC) & other tunable drug conjugates (tDC) platforms. The Company has initiated discussions with clinical-stage ADC therapeutics companies in the U.S., China and other jurisdictions to form joint ventures (JVs) pairing those companies’ clinical-stage assets with certain assets from the tADC and/or tDC platforms and spinning the JVs into standalone public companies. If successful, OS Therapies intends to provide stock dividends of the public JVs to shareholders.

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The OST-tADC and OST-tDC technologies are centered around the Company’s proprietary next-generation tunable Antibody Drug Conjugate (tADC) and tunable Drug Conjugates (tDC) platforms. These advanced technologies incorporate pH-sensitive silicon-based linkers: SiLinkers to link the targeting antibodies (or antibody fragments) and therapeutic moieties together while coating the entire package with pH sensitive coating. This strategy can release multiple therapeutic agents selectively within the tumor and tumor microenvironment, which have lower pH levels than the rest of the body. This approach aims to maximize the therapeutic effects while minimizing damage to healthy cells.

BCC Research estimates that the global market for antibody-drug conjugates is estimated to increase from $10.8 billion in 2023 to $47.0 billion by 2029, at a compound annual growth rate (CAGR) of 28.4% from 2024 through 2029.

Vicero’s Novel Cancer Immunotherapy Demonstrates Dual-Target Precision with Improved Safety Profile

On February 24, 2025 Vicero, Inc., a preclinical-stage biopharmaceutical company developing next-generation VINCOBODIES for immune-mediated diseases, reported compelling safety and efficacy data for VCR-036, its novel dual-targeting immunotherapy candidate (Press release, Vicero Bio, FEB 24, 2025, View Source [SID1234650494]). The findings, which demonstrate the potential of this pentavalent PD-1/CTLA-4 antibody to treat solid tumors, have been selected for late-breaker presentation at the inaugural American Association for Cancer Research (AACR) (Free AACR Whitepaper) Immuno-oncology (AACR IO) Conference.

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"These results highlight the potential of our bispecific PD-1/CTLA-4 program to redefine combination immunotherapy," said Vikram Kansra, PhD, Founder and Chief Executive Officer of Vicero. "Our VINCOBODY platform enables the development of multi-specific therapies designed to deliver the efficacy of dual checkpoint blockade while mitigating the toxicity challenges associated with traditional monoclonal antibodies. The promising data for VCR-036 reinforce our commitment to expanding the therapeutic window for patients with solid tumors and advancing the next generation of immuno-oncology treatments."

Key findings from the preclinical studies include:

Superior safety profile with 100% survival rate compared to 50% survival with standard combination therapy
Complete tumor regression achieved with 5 mg/kg dosing, with sustained remission after tumor rechallenge
Favorable pharmacokinetics supporting potential dosing of ~1 mg flat subcutaneous dose every 6 weeks in humans
Significantly reduced immune-related adverse events compared to combination pembrolizumab/ipilimumab therapy
"The demonstrated efficacy and safety profile of VCR-036, combined with its convenient six-week subcutaneous dosing schedule, uniquely positions this therapy to potentially address a significant unmet need in the large checkpoint inhibitor market," said Alison Finger, Chief Operating Officer of Vicero. "These attributes could offer meaningful advantages for patients and reduce the treatment burden while creating substantial value in the immunotherapy landscape. We look forward to advancing this program to the clinic."

Poster Presentation Details

Title: VCR-036 VINCOBODY: A novel, highly potent, pentavalent, toxicity-sparing PD 1/CTLA-4 VHH neutralizer with robust pre-clinical safety and efficacy
Date & Time: Tuesday, February 25, 1:45–4:45 pm
Session: Poster Session B (Poster number #LB-B009)
Presenter: Vikram Kansra, PhD, Founder and Chief Executive Officer of Vicero, Inc.

The poster will be available on www.vicerobio.com following the conference.

About VINCOBODIES
VINCOBODIES are an advancement in antibody engineering, leveraging single monomeric variable domains to offer key advantages over traditional antibody therapies. These next-generation molecules are designed to selectively target cytokines, enhancing the body’s natural immune response while achieving superior tissue penetration. With exceptional stability—remaining functional at temperatures up to 90ºC across diverse pH conditions—VINCOBODIES also streamline manufacturing and enable high-yield, high-concentration production. Most notably, their unique structural properties allow them to engage multiple targets with high affinity and avidity using a single scaffold, potentially unlocking new therapeutic possibilities.

Nuvation Bio to Present at the TD Cowen 45th Annual Health Care Conference

On February 24, 2025 Nuvation Bio Inc. (NYSE: NUVB), a global biopharmaceutical company tackling some of the greatest unmet needs in oncology, reported that David Hung, M.D., Founder, President, and Chief Executive Officer of Nuvation Bio, will present at the TD Cowen 45th Annual Health Care Conference on Monday, March 3, 2025, at 3:10 p.m. ET in Boston, MA (Press release, Nuvation Bio, FEB 24, 2025, View Source [SID1234650493]).

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A live webcast of the presentation will be available on the Nuvation Bio website at View Source An archived recording will be available for 90 days following the event.

Agenus Presents New Botensilimab/Balstilimab Data in Gastric Cancer at AACR IO Annual Meeting

On February 24, 2025 Agenus Inc. (Nasdaq: AGEN), a leader in immuno-oncology, reported data at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) IO Annual Meeting in Los Angeles, California (Press release, Agenus, FEB 24, 2025, View Source [SID1234650492]). The oral presentation highlights translational data from the ongoing Phase 2 study evaluating botensilimab (BOT, multifunctional Fc-enhanced anti-CTLA-4) and balstilimab (BAL, anti-PD-1) in combination with MiNK Therapeutics’ agenT-797, an allogeneic invariant natural killer T (iNKT) cell therapy, in patients with refractory (2L+) gastric cancer (NCT06251973).

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"These latest data demonstrate the remarkable potential of combining BOT/BAL with a novel iNKT cell therapy to broaden and intensify immune responses against resistant gastric tumors," said Dr. Dhan Chand, Vice President of Research at Agenus. "By driving strong IFNγ production, deep T-cell infiltration, and memory T-cell activation—even in PD-1–refractory patients—the addition of agenT-797 to BOT/BAL could redefine what’s possible in late-line gastric cancer. We’re particularly encouraged by how these therapies work in concert with standard-of-care chemotherapy to transform immunologically ‘cold’ tumors into ‘hot’ immune inflamed tumors, potentially offering a new therapeutic paradigm for patients facing this challenging disease."

Highlights

Broad Immune Activation: The addition of MiNK’s allogeneic iNKT therapy, agenT-797, to BOT/BAL drove robust immune activation, including elevated interferon-gamma (IFNγ) levels, indicating potent systemic engagement and overcoming immunosuppressive pathways in PD-1–refractory gastric tumors.
Enhanced T cell Infiltration and Memory T-Cell Expansion: A marked increase in tumor-infiltrating lymphocytes (TILs), together with heightened peripheral memory T-cell activation, underscores the potential for long-lasting anti-tumor immunity when combining BOT/BAL with agenT-797 (allo-iNKTs).
Optimized Sequencing with Chemotherapy: Early administration of agenT-797 alongside BOT/BAL, before standard chemotherapy significantly amplifies immune responses, potentially reducing tumor recurrence through optimal T-cell priming, activation and mobilization.
Presentation Details:

Abstract Title: Biomarker analysis from Phase 2 study of AgenT-797 (invariant natural killer T-cells), botensilimab (a Fc-enhanced CTLA-4 Inhibitor) with balstilimab (anti-PD-1) in PD-1 refractory gastroesophageal cancer (GEC)

Presenting Author: Dr. Samuel Cytryn, Memorial Sloan Kettering Cancer Center, New York, New York

Oral Session: Proffered Papers, Session 2; 1:39-1:45 p.m. PST

Poster Session: Poster Session, A; 1:45-4:45 p.m. PST

Date: Monday, February 24th

The presentation will be available on the publications page of the Agenus website at View Source following the start of the conference session.