1stOncology™: Cancer Intelligence Service – Page 461 – 1stOncology is recognized as a Top 10 Global Pharma Analytic Provider

Co-PSMA trial achieves primary endpoint

On October 14, 2025 Clarity Pharmaceuticals (ASX: CU6) ("Clarity" or "Company"), a clinical-stage radiopharmaceutical company with a mission to develop next-generation products that improve treatment outcomes for patients with cancer, reported that the Co-PSMA (NCT06907641)1 Investigator-Initiated Trial (IIT), led by Prof Louise Emmett at St Vincent’s Hospital Sydney, has achieved its primary endpoint with a statistically significant higher number of prostate-specific membrane antigen (PSMA)-positive prostate cancer lesions detected using 64Cu-SAR-bisPSMA compared to standard-of-care (SOC) 68Ga-PSMA-11 positron emission tomography/computed tomography (PET/CT) in patients with low prostate-specific antigen (PSA) levels.

Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:

Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing

Schedule Your 30 min Free Demo!

Co-PSMA’s official study title is "Comparative performance of 64Copper [64Cu]-SAR-bisPSMA vs. 68Ga-PSMA-11 PET CT for the detection of prostate cancer recurrence in the setting of biochemical failure following radical prostatectomy". This Phase II IIT is evaluating the performance of Clarity’s diagnostic product, 64Cu-SAR-bisPSMA, in comparison to SOC 68Ga-PSMA-11 in 50 patients with low PSA who are candidates for curative salvage therapy. Eligible patients were required to have had radical prostatectomy with no salvage therapy and a PSA level between 0.2 and 0.75 ng/mL.

The Co-PSMA trial has successfully met its primary endpoint, demonstrating that 64Cu-SAR-bisPSMA PET/CT detects significantly more lesions per patient than the SOC, 68Ga-PSMA-11 PET/CT. This result supports the hypothesis that 64Cu-SAR-bisPSMA can improve early detection of recurrence and staging of prostate cancer in patients with low PSA who are candidates for curative salvage therapy. Full analysis of all data generated in the Co-PSMA trial is underway, and results of this study will be presented at an upcoming international conference.

The Co-PSMA topline results corroborate findings from the COBRA trial2, which investigated the diagnostic performance of 64Cu-SAR-bisPSMA in patients with biochemical recurrence (BCR) of prostate cancer who had a negative or equivocal SOC scan at study entry. In the COBRA study, a subset of participants underwent follow-up SOC PSMA PET imaging. Only 60% of these participants had a positive SOC PSMA PET, while 70% of participants had a positive 64Cu-SAR-bisPSMA PET on same-day imaging and 90% on next-day imaging. The number of lesions across all participants (average sum of lesions across all readers) identified by 64Cu-SAR-bisPSMA was also higher (26.3 lesions on same-day imaging, 52.6 on next-day imaging) than that detected by SOC PET agents (20 lesions). The COBRA trial results showed that 64Cu-SAR-bisPSMA was able to identify lesions more than 6 months earlier than SOC PSMA PET agents, with 6 months being the last follow-up visit for that trial.

The Co-PSMA trial further builds on the growing body of evidence of the enhanced diagnostic performance of 64Cu-SAR-bisPSMA compared to SOC PSMA PET agents, which are known to have low sensitivity, especially in patients with low PSA levels3,4. Improvements in sensitivity, as with all diagnostic agents, play a pivotal role in guiding more informed treatment decisions, enabling earlier and more accurate detection of prostate cancer recurrence and ultimately improving patient outcomes.

Dr Alan Taylor, Executive Chairperson of Clarity Pharmaceuticals, commented: "Achieving the primary endpoint in the Co-PSMA trial, which was a head-to-head trial against a SOC competing product, is yet another important step in the development of 64Cu-SAR-bisPSMA as we look to further validate this agent as best-in-class through two registrational trials with two Fast Track Designations (FTDs) under our belt for diagnostic applications and a strong focus on commercialisation.

"We look forward to Prof Emmett releasing the full Co-PSMA trial data at world-leading congresses as we continue to adhere to the highest standards of clinical research in our aspirations to bring a best-in-class diagnostic option to men with prostate cancer with clear evidence of superiority. We have already seen in the first-in-human PROPELLER trial an improved diagnostic performance of 64Cu-SAR-bisPSMA compared to 68Ga-PSMA-11 on same-day imaging, including a higher number of lesions identified and 2-3 times higher tumour uptake and tumour-to-background ratio5. We then showed in the COBRA trial that approximately twice the amount of lesions was identified on 64Cu-SAR-bisPSMA PET on next-day vs. same-day imaging, and vs. SOC PSMA PET2. 64Cu-SAR-bisPSMA also allowed for the identification of lesions in the 2-mm range, something that SOC PSMA PET agents often fail to achieve2, 6-9. This improvement was driven by a substantially increased tumour-to-background ratio and lesion uptake over time with next-day imaging2.

"The current market for PSMA PET imaging in the US alone is around US$2 billion per year, and this is expected to further grow to over US$3 billion by 2029. However, this entire market is currently served by products that have low sensitivity, while the development pipeline of new products, excluding 64Cu-SAR-bisPSMA, offers no differentiation from the existing agents, with some new entrants commercialising the unpatented 68Ga-PSMA-11 agent, which has been capitalised on by three separate groups already. We believe that with the clinical and logistical benefits offered by 64Cu-SAR-bisPSMA we could not only become the new SOC in PSMA PET but grow the market opportunity further by diagnosing prostate cancer earlier, while lesions are still very small.

"We look forward to continuing to work with Prof Emmett, a world-renowned thought leader in the radiopharmaceutical space, in our home city of Sydney on progressing clinical development of the 64Cu-SAR-bisPSMA product, including our CLARIFY and AMPLIFY Phase III trials. This partnership will ensure we continue to generate the highest quality of data supporting our New Drug Applications (NDAs) to the US Food and Drug Administration (FDA) as the next step towards our mutual goal of improving treatment outcomes for men with prostate cancer."

(Press release, Clarity Pharmaceuticals, OCT 14, 2025, View Source [SID1234656623])

BriaCell to Present Positive Clinical Biomarker Data of Phase 3 Study at ESMO 2025

On October 13, 2025 BriaCell Therapeutics Corp. (Nasdaq: BCTX, BCTXW, BCTXZ) (TSX: BCT) ("BriaCell" or the "Company"), a clinical-stage biotechnology company that develops novel immunotherapies to transform cancer care, reported it will be presenting positive clinical biomarker data of its ongoing pivotal Phase 3 study of Bria-IMT plus an immune check point inhibitor (CPI) in metastatic breast cancer at its poster presentation at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress 2025 Annual Meeting taking place October 17 – 21 in Berlin, Germany.

The details of the poster presentation is listed below.

#3928: Feasibility and Biomarker Validation of an International Randomized Phase 3 Trial of Bria-IMT Cell Therapy in Late Stage MBC (BRIA-ABC)
Presentation Number: 570P
Speaker: Dr. Giuseppe Del Priore
Date and Time: Oct 20, 2025, at 12:00 – 1:00 pm CET
Presentation venue: Messe Berlin, Messedamm 22, 14055 Berlin, Germany, Hall 25

Abstract Summary
In BriaCell’s pivotal Phase 3 study of Bria-IMT plus an immune check point inhibitor (CPI) in metastatic breast cancer, patients are randomized 1:1:1 to Bria-IMT + CPI, Physician’s Choice, or Bria-IMT monotherapy. As of the time of the abstract submission, data in 68 evaluable patients, with a median of 6 prior lines of treatment (2–13), was available. Additional data will be presented at the ESMO (Free ESMO Whitepaper) conference.

Clinical efficacy data: Treatment arm agnostic biomarker positive subgroups showed significant improvement in progression free survival in patients who developed an immune response to Bria-IMT (as measured by delayed type hypersensitivity) (p=0.0002).

Tolerability profile: Bria-IMT was well tolerated with no treatment-related discontinuations due to adverse events (AEs). Most common AEs include fatigue 22.8%, anemia 22.8%, and nausea 21.5%.

About BriaCell’s Pivotal Phase 3 Clinical Study of Bria-IMT Combination Regimen in MBC patients

BriaCell’s pivotal Phase 3 study of Bria-IMT plus an immune check point inhibitor (CPI) in metastatic breast cancer is ongoing.

Interim data will be analyzed once 144 patient events (deaths) occur, comparing the overall survival (OS) in patients treated with the Bria-IMT combination regimen versus those treated with physician’s choice as the primary endpoint. Positive results of the pivotal Phase 3 study could result in full approval and marketing authorization for Bria-IMT in MBC patients. BriaCell reported positive Phase 2 survival data in a similar MBC patient population treated with the same Bria-IMT combination regimen . The Bria-IMT combination regimen has received FDA Fast Track designation.

For additional information on BriaCell’s pivotal Phase 3 study of Bria-IMT and an immune check point inhibitor in metastatic breast cancer, please visit ClinicalTrials.gov NCT06072612 .

Following the presentations, copies of the presentations will be posted on View Source

(Press release, BriaCell Therapeutics, OCT 13, 2025, View Source [SID1234656935])

Repare Therapeutics to Present Initial Data from Phase 1 LIONS Clinical Trial at 37th AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics

On October 13, 2025 Repare Therapeutics Inc. ("Repare" or the "Company") (Nasdaq: RPTX), a clinical-stage precision oncology company, reported it will share initial topline safety, tolerability and early efficacy data from the Phase 1 LIONS trial in a poster presentation at the 37th AACR (Free AACR Whitepaper)-NCI-EORTC AACR-NCI-EORTC (Free AACR-NCI-EORTC Whitepaper) International Conference on Molecular Targets and Cancer Therapeutics (EORTC-NCI-AACR) (Free ASGCT Whitepaper) (Free EORTC-NCI-AACR Whitepaper), being held October 22-26, 2025 in Boston, MA.

The LIONS clinical trial (NCT06232408) is a first-in-human, multicenter, open-label Phase 1 study to investigate safety, pharmacokinetics, pharmacodynamics and the preliminary efficacy of RP-1664, a potential first-in-class, highly selective, oral PLK4 inhibitor, for the monotherapy treatment of adult and adolescent patients with TRIM37-high solid tumors.

Poster Presentation Details:

Title: Preliminary safety and antitumor activity of RP-1664, a first-in-class PLK4 inhibitor, as monotherapy in advanced solid tumors with and without TRIM37 amplification
Presenter: Benjamin Herzberg, MD, Columbia University
Abstract Number: LB-C002
Session: Poster Session C
Session Date and Time: Saturday, October 25 | 12:30 p.m. – 4:00 p.m. ET
Session Location: Level 2, Exhibit Hall D

A copy of the poster presentation will be available on the Scientific Resources page of the Repare Therapeutics website at the start of the poster presentation session.

About RP-1664

RP-1664 is a potential first-in-class, highly selective, oral PLK4 inhibitor designed to harness the synthetic lethal relationship with TRIM37 amplification or overexpression in solid tumors. Tumors rely on PLK4 for centriole biogenesis in S-phase of the cell cycle when TRIM37, an E3 ligase that reduces pericentriolar material, is high. Preclinical studies demonstrate that RP-1664 selectively inhibits PLK4 and drives potent synthetic lethality in TRIM37-high tumor models, both in vitro and in vivo. Elevated TRIM37 is a feature found across a range of solid tumors and in approximately 80% of all high-grade neuroblastomas. RP-1664 is the only selective PLK4 inhibitor known to be in the clinic.

(Press release, Repare Therapeutics, OCT 13, 2025, View Source [SID1234656900])

Immutep Announces Successful Completion of FDA Project Optimus Requirements

On October 13, 2025 Immutep Limited (ASX: IMM; NASDAQ: IMMP) ("Immutep" or "the Company"), a late-stage immunotherapy company targeting cancer and autoimmune diseases, reported that positive and straightforward feedback has been received from the US Food and Drug Administration ("FDA") regarding the successful completion of Project Optimus requirements and agreement on 30mg as the optimal biological dose for eftilagimod alfa (efti).

Immutep’s Chief Development Officer, Christian Mueller, said, "We are very thankful for the FDA’s positive feedback and productive discussions over the past few years. The alignment on efti’s optimal biologic dose has strategic relevance to our efti oncology programs and is a major de-risking event and building block towards future BLA filings. We are excited to successfully conclude this chapter of efti’s clinical development and are intently focused on bringing this novel immunotherapy to market to help address the needs of cancer patients worldwide."

The agreement with the FDA on efti’s optimal biological dosing carries strategic importance in the ongoing and future clinical development of this first-in-class immunotherapy, including the global TACTI-004 (KEYNOTE-F91) Phase III trial evaluating efti in combination with MSD’s (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy KEYTRUDA (pembrolizumab), and chemotherapy as first-line treatment for advanced or metastatic non-small cell lung cancer (1L NSCLC), regardless of PD-L1 expression. With the conclusion of Project Optimus, this registrational study is now in process of opening sites in the United States.

About Eftilagimod Alfa (Efti)

Efti is a novel immunotherapy that directly activates antigen-presenting cells or APCs (e.g. dendritic cells, monocytes) via the MHC Class II pathway to fight cancer. As an MHC Class II agonist, its activation of APCs engages the adaptive and innate immune system to initiate a broad anti-cancer immune response. This includes priming and activating cytotoxic T cells as well as generating important co-stimulatory signals & cytokines that further boost the immune system’s ability to combat cancer.

Efti is under evaluation for a variety of solid tumours including non-small cell lung cancer (NSCLC) in a pivotal Phase III trial called TACTI-004 (KEYNOTE-F91), as well as head and neck squamous cell carcinoma (HNSCC), soft tissue sarcoma, and breast cancer. Its favourable safety profile enables various combinations like with anti-PD-[L]1 immunotherapy, radiotherapy, and/or chemotherapy. Efti has received Fast Track designation in first line HNSCC and in first line NSCLC from the United States Food and Drug Administration (FDA).

(Press release, Immutep, OCT 13, 2025, View Source [SID1234656640])

Evaxion to present a breadth of data from phase 2 trial with AI-designed personalized cancer vaccine EVX-01 at the ESMO Congress 2025

On October 13, 2025 Evaxion A/S (NASDAQ: EVAX) ("Evaxion"), a clinical-stage TechBio company specializing in developing AI-Immunology powered vaccines, reported it will present a wide range of data from its phase 2 trial with lead compound EVX-01 at the European Society for Medical Oncology (ESMO) (Free ESMO Whitepaper) Congress 2025 to be held in Berlin, Germany, from October 17-21, 2025.

The data, which will be presented at an oral session, will include two-year clinical efficacy, immunogenicity and safety data. More specifically, data will be presented on best overall response, deepened response/conversion rates and durability of response. Furthermore, the presentation will include data on the breadth, magnitude and duration of T-cell response upon booster immunization as well as data on the vaccine’s safety profile.

"We are eagerly anticipating the presentation of the data and the subsequent discussions with medical and scientific colleagues as well as potential partner companies. We are excited to have been selected for oral presentation at an event as important as the ESMO (Free ESMO Whitepaper) Congress, one of the most prestigious medical oncology conferences in the world. This is a testament to the interest in EVX-01 and the field of personalized cancer vaccines in general," says Birgitte Rønø, CSO and interim CEO of Evaxion.

Evaxion will be present and available for discussions at a booth (#3035) throughout the conference to allow for interactions and discussions of the data with all interested stakeholders.

Convincing data
Designed with Evaxion’s AI-Immunology platform, EVX-01 is a personalized cancer vaccine currently being evaluated as a treatment for advanced melanoma (skin cancer). The trial has yielded numerous convincing data already, including interim one-year data presented at the ESMO (Free ESMO Whitepaper) Congress last year.

Data demonstrated a 69% Overall Response Rate, reduction in tumor target lesions in 15 out of 16 patients, and a positive correlation between the AI-Immunology platform predictions and immune responses induced by the individual neoantigens in the EVX-01 vaccine (p=0.00013). Further, the most recent immune data demonstrates that 80% of EVX-01 vaccine targets triggered a tumor-specific immune response.

The phase 2 trial investigates EVX-01 in combination with MSD’s (Merck & Co., Inc., Rahway, NJ, USA) anti-PD-1 therapy, KEYTRUDA (pembrolizumab) in patients with advanced melanoma (skin cancer). Each patient enrolled in the trial has received a unique vaccine designed and manufactured based on their individual biology. KEYTRUDA is a registered trademark of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc., Rahway, NJ, USA.

Presentation details
Abstract Title: EVX-01, a personalized cancer vaccine, induces potent T-cell responses and durable disease control in advanced melanoma: 2-year follow-up
Abstract#: #6308
Presentation#: 1516MO
Track: Mini oral session: Investigational immunotherapy
Location: Nuremberg Auditorium – Hall 5.2
Booth: n#3035
Date/Time: October 17 at 14:10 – 14:15 CEST
Presenter: Dr. Muhammad Adnan Khattak, Director, Oncology, One Clinical Research, Hollywood Private Hospital & Edith Cowan University, Perth, WA, Australia

Webinar on October 22, 2025

Evaxion will be hosting an online webinar featuring key opinion leader and trial investigator, Dr. Muhammad Adnan Khattak, on October 22, 2025, at 16.30 CEST/10.30am EDT.

The webinar can be attended through registration via this link.

In the webinar, Dr. Khattak will present the two-year phase 2 data and discuss challenges in the medical treatment of advanced melanoma. In the end, a Q&A session will be held, and participants are encouraged to present questions.

About EVX-01
EVX-01 is a personalized peptide-based cancer vaccine intended for first-line treatment of multiple advanced solid cancers. It is Evaxion’s lead clinical asset.

EVX-01 is a personalized therapy designed with our AI-Immunology platform and is tailored to target the unique tumor profile and immune characteristics of each patient. It engages the patient’s immune system to fight off cancer by mounting a targeted response against tumors.

In the completed phase 1/2a clinical trial (NCT03715985), assessing EVX-01 in combination with a PD-1 inhibitor, eight of twelve metastatic melanoma patients (67%) had objective clinical responses, with two complete and six partial responses.

In addition, vaccine-induced T cells were detected in all patients and a significant correlation between clinical response and the AI-Immunology predictions was observed, underlining the predictive power of the platform.

(Press release, Evaxion Biotech, OCT 13, 2025, View Source [SID1234656637])