Blue Earth Diagnostics Announces Results on Clinical Factors Impacting Detection Rates from Phase 3 SPOTLIGHT Trial of Investigational PET Imaging Agent 18F-rhPSMA-7.3 in Biochemical Recurrence of Prostate Cancer
2022-10-24 · Blue Earth Diagnostics · original blueearthdiagnostics.com ↗
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Relaps cise imaging t mized patient ead for 18F‐rhP nt prostate ca der review by ed to the rad e Officer of Bl the care cont tfolio, which iagnostic PET class of PSMA ates from Pha al Recurrence O) 2022 Annu s, a Bracco ive PET evaluated the els, PSA doub tate cancer. 1 rane Antigen‐ American Soci m appropriat p to 40% of radiation the D, Chesapeak “A rising PSA cannot maging for th e after curati techniques ar t managemen PSMA‐7.3 PET ancer are incl y the U.S. Foo iation oncolo lue Earth inuum, Blue E includes 18F‐ T imaging and A‐targeted PE ase 3 e of al e bling 8F‐ ‐ iety e rapy ke after e ive‐ re nt. T uded od ogy Earth ET radiopharmaceuticals, with early studies 18F‐rhPSMA‐7.3 showing a high binding affinity for PSMA, together with biodistribution data suggesting the potential for low bladder activity.” The findings presented at ASTRO included analyses of clinical factors impacting DRs for 18F‐rhPSMA‐7.3 evaluated by three blinded central readers: DRs, including region‐level analyses, stratified by baseline PSA levels, PSA doubling time, Gleason score and prior treatment (radical prostatectomy with or without radiotherapy, or radiotherapy only). For example, results showed that among the 389 patients in the Evaluable PET Scan Population, the patient‐level DR of 18F‐rhPSMA‐7.3 PET by majority read was 83% (322/389). When stratified by PSA level, the DRs were: PSA <0.5 ng/mL: 64% (77/121); PSA ≥0.5 and <1 ng/mL: 76% (51/67); PSA ≥1 and <2 ng/mL: 93% (42/45); PSA ≥2 and <5 ng/mL: 98% (86/88); PSA ≥5 and <10 ng/mL: 94% (34/36); and PSA ≥10 ng/mL: 100% (32/32). As noted previously, no serious adverse reactions were attributed to 18F‐rhPSMA‐7.3 PET in the SPOTLIGHT study. Overall, 16 (4.1%) patients had at least one treatment‐emergent adverse event that was considered possibly related/related to 18F‐ rhPSMA‐7.3. The most frequently reported events were: hypertension: 1.8% (n=7); diarrhea: 1.0% (n=4); injection site reaction: 0.5% (n=2), and headache: 0.5% (n=2). The SPOTLIGHT trial (NCT04186845) is a Phase 3, multi‐center, single‐arm imaging study conducted in the United States and Europe to evaluate the safety and diagnostic performance of 18F‐rhPSMA‐7.3 PET imaging in men with suspected prostate cancer recurrence based on elevated PSA following prior therapy. Key results for 18F‐rhPSMA‐7.3 PET were previously presented at ASCO GU in February 2022,1 with additional results announced at AUA in April 20222 and at SNMMI in June 2022.3 The findings were discussed in an oral presentation at ASTRO 2022 on October 24, 2022, “Impact of clinical factors on 18F‐rhPSMA‐7.3 detection rates in men with recurrent prostate cancer: Findings from the phase 3 SPOTLIGHT study,” by Benjamin Lowentritt, MD, Chesapeake Urology Research Associates, Towson, Md., on behalf of the SPOTLIGHT Study Group. Full session details and the abstract are available in the ASTRO online program HERE. About Radiohybrid Prostate‐Specific Membrane Antigen (rhPSMA) rhPSMA compounds consist of a radiohybrid (“rh”) Prostate‐Specific Membrane Antigen‐targeted receptor ligand which attaches to and is internalized by prostate cancer cells and they may be radiolabeled with 18F for PET imaging, or with isotopes such as 177Lu or 225Ac for therapeutic use – creating a true theranostic technology. They may play an important role in patient management in the future, and offer the potential for precision medicine for men with prostate cancer. Radiohybrid technology and rhPSMA originated from the Technical University of Munich, Germany. Blue Earth Diagnostics acquired exclusive, worldwide rights to rhPSMA diagnostic imaging technology from Scintomics GmbH in 2018, and therapeutic rights in 2020, and has sublicensed the therapeutic application to its sister company Blue Earth Therapeutics. Blue Earth Diagnostics has completed two Phase 3 clinical studies evaluating the safety and diagnostic performance of 18F‐rhPSMA‐7.3 PET imaging in prostate cancer: (“SPOTLIGHT,” NCT04186845), in men with recurrent disease and (“LIGHTHOUSE,” NCT04186819), in men with newly diagnosed prostate cancer. Currently, rhPSMA compounds are investigational and have not received regulatory approval. About Blue Earth Diagnostics Blue Earth Diagnostics, an indirect subsidiary of Bracco Imaging S.p.A., is a growing international molecular imaging company focused on delivering innovative, well‐differentiated diagnostic solutions that inform patient care. Formed in 2014, the Company’s success is driven by its management expertise and supported by a demonstrated track record of rapid development and commercialization of positron emission tomography (PET) radiopharmaceuticals. Blue Earth Diagnostics’ expanding oncology portfolio encompasses a variety of disease states, including prostate cancer and neuro‐oncology. Blue Earth Diagnostics is committed to the timely development and commercialization of precision radiopharmaceuticals for potential use in imaging and therapy. For more information, please visit: www.blueearthdiagnostics.com. About Bracco Imaging Bracco Imaging S.p.A., part of the Bracco Group, is a world‐leading diagnostic imaging provider. Headquartered in Milan, Italy, Bracco Imaging develops, manufactures and markets diagnostic imaging agents and solutions. It offers a product and solution portfolio for all key diagnostic imaging modalities: X‐ray imaging (including Computed Tomography‐CT, Interventional Radiology, and Cardiac Catheterization), Magnetic Resonance Imaging (MRI), Contrast Enhanced Ultrasound (CEUS), and Nuclear Medicine through radioactive tracers and novel PET imaging agents to inform clinical management and guide care for cancer patients in areas of unmet medical need. Our continually evolving portfolio is completed by a range of medical devices, advanced administration systems and dose‐management software. In 2019 Bracco Imaging enriched its product portfolio by expanding the range of oncology nuclear imaging solutions in the urology segment and other specialties with the acquisition of Blue Earth Diagnostics. In 2021, Bracco Imaging established Blue Earth Therapeutics as a separate, cutting‐edge biotechnology vehicle to develop radiopharmaceutical therapies. Visit: www.braccoimaging.com. 1 DM Schuster, SPOTLIGHT Study Group. J. Clin. Onc. 2022; 40 (6_suppl):9‐9. 2 MT Fleming, SPOTLIGHT Study Group, J. Urol. 2022, 207 (5_suppl):31047. 3 Kuo, P, SPOTLIGHT Study Group, J. Nucl. Med. 2022, 63 (2_suppl): 2539. Contact: For Blue Earth Diagnostics (U.S.) Priscilla Harlan Vice President, Corporate Communications (M) (781) 799‐7917 [email protected] For Blue Earth Diagnostics (UK) Clare Gidley Associate Director Marketing and Communications Tel: +44 (0) 7917 536939 [email protected] Media Sam Brown Inc. Mike Beyer (M) (312) 961‐2502 [email protected] # # #
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