Onconetix Announces Successful Clinical Validation of its Innovative Prostate Cancer Test Proclarix in a Danish cohort

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Onconetix, Inc.
Onconetix, Inc.

CINCINNATI, March 24, 2025 (GLOBE NEWSWIRE) -- Onconetix, Inc., (Nasdaq: ONCO) ("Onconetix" or the “Company”), (formerly Blue Water Biotech, Inc. (BWV)), a cancer diagnostics company focused on the research, development and commercialization of innovative solutions for oncology, today announced that new clinical data of Proclarix® was presented on March 23, 2025 during the 2025 European Association of Urology (EAU) congress, which data further demonstrates the strong clinical performance of Proclarix® in a Danish cohort.

The primary approach for early detection of prostate cancer is through testing serum levels of prostate-specific antigen (PSA). However, given the limited cancer specificity of PSA, Proclarix® is addressing the urgent need for improved diagnosis by lowering the burden of potential over-detection of clinically insignificant prostate cancer resulting in unnecessary biopsies.

In the study presented, Proclarix® was evaluated in prospectively collected samples from 808 patients with suspected prostate cancer. In the challenging subpopulation including 371 patients with an enlarged prostate and thus frequently presenting elevated PSA levels leading to false-positive results, a negative Proclarix test resulted in a probability of 5% or less for clinically significant cancer outperforming other diagnostic tools like %fPSA (14%, p=0.028) and the ERSPC (European Randomised Study of Screening for Prostate Cancer) risk calculator (20%, p=0.026). Proclarix avoided most biopsies (22%) and missing the least significant cancers (3 out of 101 patients). In the extended population including 654 patients with a PSA level of 2-20 ng/ml, the clinical performance of Proclarix® was confirmed with a sensitivity of 96% and a significantly higher (p<0.001) specificity compared to both %fPSA and ERSPC risk calculator.

Primary investigator and presenter of the study, Ahmed H. Zedan, MD, PhD from Lillebaelt Hospital - University Hospital of Southern Denmark said: ”Proclarix can be safely used to reduce performed biopsies by ruling out patients with clinically insignificant or no prostate cancer and by minimizing the risk of missing clinically significant cancer”.

About Proclarix®

Proclarix® is CE-certified under In Vitro Diagnostic Regulation (“IVDR”) and indicated for prostate cancer diagnosis in patients with normal digital rectal exam (DRE), enlarged prostate volume and elevated levels of PSA at 2-10 ng/ml. Proclarix® is a risk score combining in-vitro assays for the quantitative detection of biomarkers with a proprietary algorithm to assess a patient’s risk of having clinically significant prostate cancer. Detection of prostate cancer-related biomarkers in blood serum using the Proclarix® risk score has been demonstrated in multiple clinical studies to be a reliable indicator of the presence of clinically significant prostate cancer. Proclarix® is included in both the European (EAU) and American (AUA) guidelines.