On April 28, 2025 Arvinas, Inc. (Nasdaq: ARVN), a clinical-stage biotechnology company working to develop a new class of drugs based on targeted protein degradation, reported data from preclinical combination studies of ARV-393, the company’s investigational PROteolysis TArgeting Chimera (PROTAC) B-cell lymphoma 6 protein (BCL6) degrader (Press release, Arvinas, APR 28, 2025, View Source [SID1234652219]). BCL6 is a transcriptional repressor protein and a known driver of B-cell lymphomas. Data demonstrated synergistic antitumor activity, including complete regressions, in combination with standard of care (SOC) chemotherapy, SOC biologics, and investigational oral small molecule inhibitors (SMIs) in high grade B-cell lymphoma (HGBCL) and aggressive diffuse large B-cell lymphoma (DLBCL) models. The results from these preclinical studies were shared in a poster presentation at the 2025 American Association for Cancer Research (AACR) (Free AACR Whitepaper) annual meeting in Chicago, Illinois.

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Key findings from the studies included:

ARV-393 in combination with SOC chemotherapy (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone [R-CHOP]), induced significantly greater tumor growth inhibition compared with rituximab, CHOP, R-CHOP, or ARV-393 alone, with complete tumor regressions in all mice treated with the ARV-393 and R-CHOP combination.
ARV-393 in combination with SOC biologics targeting CD20 (rituximab), CD19 (tafasitamab), or CD79b (polatuzumab vedotin) resulted in tumor regressions and demonstrated significantly stronger tumor growth inhibition compared with each agent alone.
In preclinical models, ARV-393 increased CD20 expression, providing additional support for the exploration of combinations with CD20-targeted agents and in the context of low or loss of CD20 expression.
ARV-393 in combination with investigational small molecule inhibitors targeting clinically validated oncogenic drivers of lymphoma, such as BTK (acalabrutinib), BCL2 (venetoclax), or EZH2 (tazemetostat), resulted in superior tumor growth inhibition compared with each agent alone, with tumor regressions in all mice treated with the combinations.
"Given that combination regimens are the foundation of lymphoma treatment, we are encouraged by the strength of these preclinical combination data, which demonstrate complete tumor regressions in aggressive lymphoma models," said Noah Berkowitz, M.D., Ph.D., Chief Medical Officer at Arvinas. "We believe these preclinical data demonstrate potential for broad combinability of ARV-393 and provide a compelling rationale for considering combination strategies as we work to bring forward new therapeutic options for lymphoma patients."

A Phase 1 study of ARV-393 is enrolling patients with relapsed/refractory non-Hodgkin lymphoma, including DLBCL (NCT06393738).

Additional detail on the ARV-393 data presentation at AACR (Free AACR Whitepaper) 2025:

Poster Title: ARV-393, a PROteolysis TArgeting Chimera (PROTAC) BCL6 Degrader, Combined With Biologics or Small-Molecule Inhibitors Induces Tumor Regressions in Diffuse Large B-Cell Lymphoma Models
Abstract: 1655
Session Title: Degraders and Glues 2
Session Type: Experimental and Molecular Therapeutic
Location: Poster Section 18
Poster Board Number: 15
Date: Monday, April 28, 2025
Lecture Time: 9:00 a.m. – 12:00 p.m. CT

About ARV-393
ARV-393 is an investigational, orally bioavailable PROteolysis TArgeting Chimera (PROTAC) designed to degrade B-cell lymphoma 6 protein (BCL6), a transcriptional repressor and major driver of B-cell lymphomas. During B-cell development, tightly controlled BCL6 protein expression regulates >600 genes to facilitate rapid B-cell proliferation and tolerance of somatic hypermutation and gene recombination for antibody generation. Deregulated BCL6 expression is common in B-cell lymphoma and promotes cancer cell survival, proliferation, and genomic instability. PROTAC-mediated degradation has the potential to address the historically undruggable nature of BCL6. ARV-393 is currently in a Phase 1 clinical trial in patients with relapsed/refractory non-Hodgkin lymphoma.

On April 28, 2025 Alpha Tau Medical Ltd. ("Alpha Tau", or the "Company") (NASDAQ: DRTS, DRTSW), the developer of the innovative alpha-radiation cancer therapy Alpha DaRT, reported that it has successfully closed a registered direct offering (the "offering") whereby an affiliate of Oramed Pharmaceuticals Inc. ("Oramed") (Nasdaq: ORMP) (TASE: ORMP) purchased 14,110,121 of Alpha Tau’s ordinary shares, no par value, at a purchase price of $2.612 per ordinary share (Press release, Alpha Tau Medical, APR 28, 2025, View Source [SID1234652216]). The offering closed on April 28, 2025.

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The total gross proceeds of the offering were approximately $36.9 million, before deducting estimated offering expenses payable by Alpha Tau. Alpha Tau intends to use the net proceeds from the offering for general corporate purposes, including research and development-related purposes in connection with its product candidates, for expansion of its manufacturing capabilities and for potential commercialization of its product candidates.

In addition, the parties have entered into an agreement whereby an affiliate of Oramed will provide Alpha Tau with certain strategic services (investor relations and public relations) over the next three years in exchange for payments from Alpha Tau as well warrants to purchase additional Alpha Tau shares.

Alpha Tau CEO Uzi Sofer commented, "We are delighted to welcome Oramed as a strategic partner and to leverage their extensive expertise in navigating diverse capital markets channels. This investment comes at the perfect time for Alpha Tau given the rapid expansion of our business activities, including four parallel trial approvals in the U.S., expansion into trials in multiple internal organs, and continued expansion of our manufacturing capacity and pre-commercial preparations. We look forward to a long and fruitful relationship with Oramed."

Oramed CEO Nadav Kidron added, "We are incredibly excited about this alliance with Alpha Tau. We have tremendous conviction in the strength of the Alpha DaRT technology and the Alpha Tau management team. We anticipate significant advancements and milestone achievements as they execute their clinical and commercial roadmap."

A registration statement on Form F-3 relating to the securities to be sold in the registered direct offering has been filed with the U.S. Securities and Exchange Commission (the "SEC") and was declared effective on April 13, 2023. This registered direct offering was made only by means of a prospectus. A copy of the prospectus supplement and the accompanying prospectus relating to this offering was filed with the SEC and may be obtained for free by visiting EDGAR on the SEC’s website at www.sec.gov

This press release shall not constitute an offer to sell or a solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

On April 27, 2025 ImmVira reported the Phase I clinical results of its oncolytic Herpes Simplex Virus ("oHSV") product MVR-C5252 targeting malignant glioma through poster presentation at American Association for Cancer Research (AACR) (Free AACR Whitepaper) ("AACR") annual meeting (Press release, Immvira, APR 27, 2025, View Source [SID1234652208]).

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According to industry data, malignant glioma, a highly aggressive and recurrent brain cancer, has a five-year survival rate of less than 5%. Developed on ImmVira’s proprietary OVPENS platform, MVR-C5252 is specifically engineered with designed attenuation to achieve on-target malignant gliocyte killing and armed with PD-1 antibody and IL-12, for the synergistic anti-tumor effects of "oncolysis + immune activation". This innovative product has obtained Investigational New Drug approval in both the U.S. and China, as well as Orphan Drug Designation from the FDA.

The Phase I trial, for which the clinical study results were released, was conducted in collaboration with Duke University, a renowned institution with expertise in oncolytic virotherapy, immunotherapy, and CNS treatments. Unlike the commonly used Ommaya reservoir, MVR-C5252 is delivered intracranially via convection-enhanced delivery ("CED"). This approach can provide slow and sustained positive pressure to the target brain area via an implanted catheter to ensure even drug distribution, enabling multiple dosing while bypassing the blood-brain barrier. To date, five patients with recurrent high-grade glioma have received MVR-C5252 treatments.

In Stage 1A of the study, three patients received 5×10⁶ PFU and completed the dose-limiting toxicity ("DLT") period. Serial cytokine analysis of cerebrospinal fluid ("CSF") showed dynamic immune responses and intended biologic activity, with measurable changes in cytokine concentrations post-infusion. In addition, no serious adverse events ("SAEs"), DLTs, or Grade 3–5 adverse events ("AEs") occurred. The only reported Grade 1–2 AEs included fatigue, flu-like symptoms, and cognitive disturbance, indicating a favorable safety profile of MVR-C5252 delivered via CED.

Dr. Grace Guoying Zhou, ImmVira’s Chairwoman and CEO, said, "We are committed to developing advanced therapies featuring novel modalities using oHSV and engineered exosomes, to address complex and challenging diseases. After years of parallel development and in-depth explorations in both the U.S. and China, we have strategically focused on malignant glioma for the development of MVR-C5252, leveraging HSV-1’s unique biological and translational medical characteristics and in line with highly unmet medical needs and substantial market potential. Our collaboration with Duke University, a global leader in glioma research and treatment, will accelerate clinical development of this innovative therapy, delivering a new solution for this type of severe life-threatening diseases."

On April 27, 2025 Johnson & Johnson (NYSE: JNJ) reported new data from Cohort 2 of the pivotal Phase 2b SunRISe-1 study evaluating TAR-200—an intravesical gemcitabine releasing system—for patients with certain types of bladder cancer (Press release, Johnson & Johnson, APR 27, 2025, View Source;johnsons-tar-200-monotherapy-demonstrates-highest-complete-response-rate-with-sustained-clinical-benefits-in-patients-with-certain-types-of-bladder-cancer-302438939.html [SID1234652207]). The findings demonstrate the highest complete response rate without reinduction with more than half of responders remaining cancer-free for at least 12 months. These results highlight the potential of TAR-200 as a breakthrough for people with Bacillus Calmette-Guérin (BCG)-unresponsive, high-risk non-muscle-invasive bladder cancer (HR-NMIBC) with carcinoma in situ (CIS), with or without papillary tumors who are ineligible or refuse radical cystectomy (RC). These results were featured in the Paradigm-Shifting, Practice-Changing Clinical Trials in Urology plenary session at the 2025 American Urological Association (AUA) Annual Meeting.1

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"Treatment with TAR-200 has long-lasting effectiveness. More than 82 percent of patients achieved a complete response, and of those that initially responded to treatment, more than half showed no signs of cancer at one year," said Joseph Jacob*, M.D., MCR, Associate Professor of Urology at Upstate Medical University and presenting author. "These findings represent the highest complete response rate observed for patients with HR-NMIBC and underscore the potential of TAR-200 to provide long-lasting cancer control for patients."

"Bladder cancer is one of the ten most common cancers worldwide, yet treatment options have remained largely unchanged for over 40 years, leaving patients with few choices if initial BCG therapy does not work," said Christopher Cutie, M.D., Vice President, Disease Area Leader, Bladder Cancer, Johnson & Johnson Innovative Medicine. "TAR-200 is designed to allow for sustained delivery of medication directly into the bladder through a brief and routine procedure, which benefits patients. These data now show patients can remain cancer-free for a meaningful period of time, marking a significant step forward for those facing this challenging disease."

As of March 2025, 82.4 percent of the 85 enrolled patients in the study achieved a complete response (CR) (95 percent confidence interval [CI], 72.6-89.8), meaning their cancer was undetectable following treatment. This high response rate translated into sustained disease control, with 52.9 percent of responders maintaining complete response at one year. The median duration of response (DOR) was 25.8 months (95 percent CI, 8.3-not estimable), indicating that many patients remained cancer-free for over two years without the need for reinduction therapy. At 12 months, 86.6 percent (95 percent CI, 76.6-92.6) of responders remained cystectomy-free. Importantly, the treatment was well-tolerated, with most adverse events being mild urinary symptoms. These findings show that TAR-200 offers a highly effective and durable treatment option for patients with certain types of BCG-unresponsive HR-NMIBC.

Most treatment-related adverse events (TRAEs) were mild and manageable. Overall, 71 patients (83.5 percent) experienced TRAEs, the majority of which were low-grade urinary symptoms, such as bladder irritation or discomfort. Eleven patients (12.9 percent) experienced Grade 3 or higher TRAEs, and five patients (5.9 percent) reported serious TRAEs. Only three patients (3.5 percent) discontinued treatment due to TRAEs, and there were no treatment-related deaths.

TAR-200 is inserted directly into the bladder by a healthcare professional in a brief outpatient procedure, without the need for anesthesia. Designed to remain in the bladder, it does not interfere with daily activities and provides sustained release of treatment throughout the day. To date, TAR-200 has been placed more than 10,000 times as part of the SunRISe clinical program.

Earlier results from Cohort 2 were previously presented at the 2024 European Society of Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress and at the 2024 American Urological Association (AUA) Annual Meeting. In January 2025, Johnson & Johnson announced the initiation of a new drug application with the FDA for TAR-200 under the Real-Time Oncology Review (RTOR) program.

About TAR-200
TAR-200 is an investigational intravesical gemcitabine releasing system. In January 2025, Johnson & Johnson announced the initiation of a new drug application with the FDA for TAR-200 under the real-time oncology review (RTOR) program. In December 2023, the FDA granted Breakthrough Therapy Designation (BTD) to TAR-200 for the treatment of adult patients with BCG-unresponsive HR-NMIBC with CIS who are ineligible for or have elected not to undergo radical cystectomy. The safety and efficacy of TAR-200 are being evaluated in Phase 2 and Phase 3 studies in patients with MIBC in SunRISe-4, and NMIBC in SunRISe-1, SunRISe-3 and SunRISe-5.

About SunRISe-1, Cohort 2
SunRISe-1 (NCT04640623) is an ongoing Phase 2b, randomized, open-label, multicenter study evaluating the efficacy and safety of TAR-200, an intravesical gemcitabine releasing system, in patients with BCG-unresponsive HR-NMIBC who are ineligible for, or elected not to undergo, radical cystectomy. Cohort 2 specifically enrolls patients with carcinoma in situ, with or without papillary disease, treating them with TAR-200 monotherapy. The primary endpoint for Cohort 2 is CR rate at any time point. Secondary endpoints include duration of response (DOR), overall survival (OS), pharmacokinetics, quality of life, safety and tolerability.

About High-Risk Non-Muscle-Invasive Bladder Cancer
High-risk non-muscle-invasive bladder cancer is a type of non-invasive bladder cancer that is more likely to recur or spread beyond the lining of the bladder, called the urothelium, and progress to muscle invasive bladder cancer compared to low-risk NMIBC.2,3 HR-NMIBC makes up 15-44 percent of patients with NMIBC and is characterized by a high-grade, large tumor size, presence of multiple tumors, and CIS.4 Radical cystectomy is currently recommended for NMIBC patients who fail BCG therapy, with over 90 percent cancer-specific survival if performed before muscle-invasive progression.5,6 Given that NMIBC typically affects older patients, many may be unwilling or unfit to undergo radical cystectomy.

On April 27, 2025 Innovent Biologics, Inc. ("Innovent") (HKEX: 01801), a world-class biopharmaceutical company that develops, manufactures and commercializes high-quality medicines for the treatment of oncology, cardiovascular and metabolic, autoimmune, ophthalmology and other major diseases, reported that preclinical data on multiple novel bispecific antibodies, tri-specific antibodies as well as bispecific antibody-drug-conjugates (ADCs) from its oncology pipeline will be presented at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2025 (Press release, Innovent Biologics, APR 27, 2025, View Source;innovent-presents-preclinical-data-of-multiple-novel-molecules-including-bispecific-and-tri-specific-antibodies-and-bispecific-adcs-302439078.html [SID1234652205]). The AACR (Free AACR Whitepaper) meeting will take place April 25-30, 2025, in Chicago, Illinois.

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Dr. Kaijie He, Cancer Biology and ADC Vice President of Innovent, stated: "With continuous advancement of Innovent Academy’s integrated technology platforms, our global R&D capabilities have reached new heights, further strengthening our competitive position in the international biopharmaceutical landscape. This progress has accelerated our ability to design and develop innovative therapeutic candidates with significant global impact. We are proud to showcase a batch of preclinical research findings at this year’s AACR (Free AACR Whitepaper) Annual Meeting, including multiple globally first-in-class bispecific antibodies, multi-specific antibodies, and antibody-drug conjugates (ADCs). These scientific advancements highlight our expanding research expertise and underscore our unwavering dedication to creating life-changing treatments for patients across the globe. Moving forward, we remain deeply committed to scientific innovation—advancing target selection precision and pioneering unexplored biological mechanisms—to deliver breakthrough solutions for difficult-to-treat diseases and ensure more patients worldwide can access the benefits of cutting-edge therapeutic technologies. "

Research highlights as below:

Late-Breaking Research: Immunology 2
Topic: Preclinical data of IAR037, a novel CD40/PD-L1 bispecific antibody for the treatment of advanced solid tumors resistant to immune checkpoint inhibitors
Abstract Number: LB139
Presentation Form: Poster
Presentation Time: Monday April 28, 2025, 9:00 AM – 12:00 PM
Location: Poster Section 52

IAR037 is a novel CD40/PD-L1 bispecific antibody, which simultaneously activates CD40 and blocks PD-1/L1, demonstrating potent anti-tumor efficacy in PD-1-resistant syngeneic mouse models and synergy with PD-1/IL-2α-bias fusion protein IBI363. Preclinical studies show tumor-specific immune activation with minimal systemic effects and a favorable safety profile in cynomolgus monkeys.

IAR037 presents a novel therapeutic approach for ICI-resistant advanced solid tumors and the IND-enabling study of IAR037 is ongoing.

Late-Breaking Research: Clinical Research 1
Topic: Preclinical characterization of IBI3010, a FRα targeting biparatopic antibody-drug conjugate (ADC), for the treatment of FRα expressing tumors
Abstract Number: LB222
Presentation Form: Poster
Presentation Time: Monday April 28, 2025, 2:00 PM – 5:00 PM
Location: Poster Section 53

IBI3010 is a FRα targeting biparatopic ADC with novel topoisomerase I inhibitor NT1 (DAR8). The biparatopic design enhances tumor binding/internalization.

IBI3010 shows superior cytotoxicity and bystander effect versus mirvetuximab soravtansine (IMGN853) in vitro. IBI3010 demonstrated superior antitumor activity to IMGN853 in FRα-expressing CDX models, particularly in low-FRα expression models. GLP tox studies in cynomolgus monkeys established 60 mg/kg as HNSTD with full tolerability.

These data support the clinical development of IBI3010 to evaluate its potential as an ADC therapeutic for FRα-expressing solid tumors.

Poster Session: Experimental and Molecular Therapeutics – Biochemical Modulators of Cancer / Differentiation Therapeutic Strategies
Topic: IBI3014, a TROP2xPD-L1 bi-specific ADC integrating ADC killing with checkpoint blockade within one molecule, exhibits promising efficacy and safety in preclinical models
Abstract Number: 344
Presentation Form: Poster
Presentation Time: Sunday April 27, 2025, 2:00 PM – 5:00 PM
Location: Poster Section 16
Poster Board Number: 11

IBI3014 is a bispecific ADC targeting TROP2 and PD-L1. Its dual mechanism integrates TROP2-directed tumor killing with PD-L1 immune checkpoint blockade, enhancing immunogenic cell death and T cell infiltration.

In CDX models with varying TROP2/PD-L1 expression, IBI3014 demonstrated superior cytotoxicity compared to benchmark ADCs, covering broader tumor types. It maintained stability in mice and monkeys, with a well-tolerated HNSTD of 50 mg/kg in monkeys.

IBI3014’s dual mechanism of action not only enhances therapeutic efficacy but also maintains a favorable safety profile, which provides a promising approach for cancer therapy.

Poster Session: Experimental and Molecular Therapeutics – Biochemical Modulators of Cancer / Differentiation Therapeutic Strategies
Topic: Trop2 and B7H4 bi-specific ADC with improved efficacy and safety for gynecologic cancers
Abstract Number: 345
Presentation Form: Poster
Presentation Time: Sunday April 27, 2025, 2:00 PM – 5:00 PM
Location: Poster Section 16
Poster Board Number: 12

IBI3022, a bi-specific ADC targeting Trop2 and B7H4, aims to enhance tumor antigen expression and reduce off-tumor toxicity associated with Trop2 by incorporating a single-arm Trop2 antibody and a less toxic Topoi NT3 linker payload.

In vitro studies demonstrate that IBI3022 exhibits superior cytotoxicity in HT29 cells overexpressing Trop2 and B7H4 compared to mono-specific ADC benchmarks targeting Trop2 or B7H4. In vivo, IBI3022 demonstrates enhanced tumor suppression compared to mono-specific ADC benchmarks in various tumor models with differing levels of Trop2 and B7H4 expression.

IBI3022 represents a promising bi-specific ADC for the treatment of gynecologic cancers, offering improved efficacy and safety profiles.

Poster Session: Experimental and Molecular Therapeutics – Therapeutic Approaches to Attack the Tumor Microenvironment
Topic: IBI3026, a first-in-class anti-PD-1/IL-12 fusion protein, demonstrates the potential to be a new immuno-oncology therapy by releasing the breaks in immune response and strongly activating T and NK cells in the tumor microenvironment
Abstract Number: 3118
Presentation Form: Poster
Presentation Time: Monday April 28, 2025, 2:00 PM – 5:00 PM
Location: Poster Section 24
Poster Board Number: 2

IBI3026 is a bispecific immune agonist targeting PD-1 and IL-12 receptor, designed to improve safety profile by reducing IL-12 activity while enabling tumor-targeted activation through PD-1+ T cell enrichment.

IBI3026 demonstrated potent immune activation (STAT4/IFN-γ signaling) in pre-treated human PBMCs and achieved complete tumor suppression in multiple models (EMT6, CT26, A375, BxPC-3). In cynomolgus monkeys, the highest non-severely toxic dose (HNSTD) of IBI3026 is 150 mg/kg and the calculated therapeutic index is 63.

As a first-in-class candidate, IBI3026 combines PD-1 blockade with localized IL-12 activation, offering a promising strategy for tumors resistant to current immunotherapies.

Poster Session: Immunology – T Cell Engagers
Topic: A 2+1 format MUC16 targeting T cell engager induces MUC16-dependent T cell activity and superior anti-tumor efficacy
Abstract Number: 3510
Presentation Form: Poster
Presentation Time: Monday April 28, 2025, 2:00 PM – 5:00 PM
Location: Poster Section 38
Poster Board Number: 18

We developed a 2+1 format MUC16 TCE, with improved tumor cell binding affinity, enhanced tumor cell killing potency, and MUC16-dependent T cell binding and activation.

Compared to the benchmark molecule, this MUC16 TCE showed limited T cell binding and activation without MUC16, minimizing off-target activity. This 2+1 format MUC16 TCE also showed a favorable pharmacokinetics profile in mice. Functionally, systemic administration of this MUC16 TCE showed superior anti-tumor efficacy, with undetectable toxicity, in xenograft models.

This innovative TCE shows significant potential for treating MUC16-positive cancers, particularly chemotherapy-resistant ovarian cancer.

Poster Session: Experimental and Molecular Therapeutics – New and Emerging Cancer Drug Targets
Topic: IBI3019, a first-in-class EGFR/CDH17/CD16A tri-specific antibody, demonstrated potent efficacy against CRC and an excellent safety profile in preclinical studies
Abstract Number: 4249
Presentation Form: Poster
Presentation Time: Tuesday April 29, 2025, 9:00 AM – 12:00 PM
Location: Poster Section 17
Poster Board Number: 6

IBI3019 is a novel tri-specific antibody targeting EGFR, CDH17, and CD16A for colorectal cancer treatment. It demonstrated strong tumor-specific EGFR inhibition by targeting the overexpressed CDH17 on tumors, while significantly reducing skin toxicities commonly associated with EGFR therapies.

Additionally, IBI3019 incorporates a high-affinity CD16A nanobody that showed better antibody-dependent cell cytotoxicity than those mediated by low-fucose Fc. Importantly, IBI3019 not only demonstrated superior in vitro and in vivo anti-tumor efficacy to Cetuximab and Amivantamab but was also highly tolerable in cynomolgus monkeys with HNSTD at 150 mg/kg in a pilot tox study. These promising preclinical findings warrant further clinical exploration.

Poster Session: Immunology – Modulation of Tumor Microenvironment: Modulation of Lymphocyte Influx
Topic: A PD1-IFNα fusion protein, with an attenuated IFNα fused to a clinically validated PD1 mAb, elicited PD1-dependent IFNα signaling and superior anti-tumor efficacy
Abstract Number: 4881
Presentation Form: Poster
Presentation Time: Tuesday April 29, 2025, 9:00 AM – 12:00 PM
Location: Poster Section 40
Poster Board Number: 9

We engineered a novel PD1-IFNα fusion protein that combines attenuated IFNα with Sintilimab, inducing potent PD1/PDL1 blockade while eliciting highly PD1-dependent IFNα signaling, selectively activating in PD1-high cells.

Preclinical studies demonstrate superior anti-tumor efficacy compared to PD1 mAb alone in multiple mouse syngeneic tumor models, with undetectable toxicity and a favorable pharmacokinetics profile.

This bi-functional molecule potentially benefits patients with ICB-refractory cancers including pancreatic, ovarian, and MSS colorectal cancers.