Data on POSLUMA® (Flotufolastat F 18) in Patients with Suspected Biochemical Recurrence of Prostate Cancer and Low-Very Low Prostate Specific Antigen (PSA) Levels Presented at ASTRO
2023-10-02 · Blue Earth Diagnostics · original blueearthdiagnostics.com ↗
PRESS RE For U.S au New Da Prost − Post‐ho MONROE company emission t from the F 18) PET rate (% po levels. PO positron e men with with susp Results hi O p a Ex to “Recurren location o managem Atlanta, G diagnostic suspected with an ov performa these men lesions. PO suspected LEASE udiences only ata on POSLU tate Cancer a oc analysis fro plan E TOWNSHIP, and recogniz tomography Phase 3 SPOT in suspected ositive PET sc OSLUMA® (flot emission tom prostate can ected recurre ghlights: Overall, 68% (1 atients with a positive flotu xtrapelvic les o 39% (26/67 nt prostate ca of recurrent d ment,” said As Ga., on behalf c performanc d biochemica verall 83% (3 nce in 188 m n were found OSLUMA PET d early recurr y UMA® (Flotufo and Low‐Very om Blue Earth nning, particu NJ, and OXF zed leader in t (PET) radioph TLIGHT trial (N biochemical ans) in a subs tufolastat F 1 ography (PET ncer with susp ence based o 128/188) of e a PSA of ≥0.5 ufolastat F 18 ions were ob ) in patients w ancer present disease is nece shesh B. Jani, f of the SPOTL ce of POSLUM l recurrence o 22/389) dete en with low‐v d to have posi T may be a use ence of disea olastat F 18) y Low Prostat h Diagnostics’ ularly when cu ORD, UK, Oct the developm harmaceutica NCT04186845 recurrence o set of patient 18) injection ( T) of prostate pected metas n elevated se evaluable pat – <1 ng/mL, a 8 scan by majo served in 21% with a PSA of ts clinical cha essary to info MD, MSEE, F LIGHT Study G MA PET imagin of the disease ection rate. Th very low PSA itive POSLUM eful tool for t ase who may in Patients w te Specific An ’ Phase 3 SPO urative salvag tober 2, 2023 ment and com ls, today ann 5) that invest of prostate ca ts with low‐ve formerly refe ‐specific mem stasis who are erum prostate ients with a P and 64% (77/ ority read. % (25/121) of ≥0.5 to 1 ng/ llenges, and t orm physician ASTRO, Wins Group. “The S ng as a potent e, and demon his post‐hoc a levels. Result MA scans, with treatment pla be candidate with Suspecte ntigen (PSA) L OTLIGHT trial ge therapy is 3 – Blue Earth mmercializatio ounced resul igated the us ncer. The ana ery low Prosta erred to as 18F mbrane antige e candidates f e‐specific ant PSA level of < /121) of patie f patients wit /mL. the ability to ns and their p ship Cancer In SPOTLIGHT st tial decision‐ nstrated prec analysis furth ts showed tha h a quarter of anning, partic es for curative ed Biochemic Levels Presen provides data considered – h Diagnostics, on of innovat lts from a pos se of POSLUM alysis examin ate Specific A F‐rhPSMA‐7.3 en (PSMA) po for initial def igen (PSA) lev 1 ng/mL, 76% ents with a PS h a PSA <0.5 determine th atients for ap nstitute of Em tudy investiga making aid in ision diagnos er examined at more than f them having cularly in patie e salvage ther al Recurrence nted at ASTRO a about treat – , a Bracco ive positron st‐hoc analys MA® (flotufola ed the detect Antigen (PSA) 3) is indicated ositive lesions initive therap vel. % (51/67) of SA <0.5 ng/m ng/mL, increa he extent and ppropriate cli mory Universit ated the n assessing stic performan POSLUMA two‐thirds o g extrapelvic ents with rapy.” e of O tment is astat tion d for s in py or L had asing d nical ty, nce, of “We are pleased to present these results to the radiation oncology community at ASTRO,” said David E. Gauden, D.Phil., Chief Executive Officer of Blue Earth Diagnostics. “POSLUMA has recently been added to nationally recognized clinical oncology guidelines for prostate cancer, alongside and for all the same categories as the other currently FDA‐approved PSMA PET radiopharmaceuticals. Our new product represents a new class of high‐affinity PSMA‐targeted radiopharmaceuticals based on novel radiohybrid technology and provides physicians with high‐quality information based on these good detection rates at low PSA levels, high‐affinity PSMA binding and low urinary bladder activity. The product is labeled with the radioisotope fluorine‐18 (18F) to leverage high image quality and to enable broad, readily available geographic access for patients via the manufacturing and distribution network of our commercial U.S. manufacturer and distributor, PETNET Solutions Inc, A Siemens Healthineers Company.” The findings were discussed in an oral presentation at the 2023 ASTRO Annual Meeting on October 2, 2023, “Detection Rate of 18F‐rhPSMA‐7.3 PET in Patients with Suspected Prostate Cancer Recurrence at PSA Levels <1 ng/mL: Data from the Phase 3 SPOTLIGHT Study,” by Ashesh B. Jani, MD, MSEE, FASTRO, Winship Cancer Institute of Emory University, Atlanta, Ga., on behalf of the SPOTLIGHT Study Group. Full session details and the abstract are available in the ASTRO online program here. About the study The post‐hoc analysis of SPOTLIGHT data determined flotufolastat F 18 detection rates (DR) at low‐very low PSA levels. Patients enrolled in SPOTLIGHT underwent PET with scans evaluated by majority read of 3 blinded central readers. For the present analysis, all patients with an evaluable flotufolastat F 18 PET and a baseline PSA <1 ng/mL were selected. Overall (patient‐level) and regional DR by majority read were determined, stratifying DR according to the patients’ baseline PSA level (<0.2, ≥0.2 – <0.3, ≥0.3 – <0.5, and ≥0.5 – <1 ng/mL). In total, 389 patients (median [range] PSA, 1.10 [0.03–135] ng/mL, 84 with intact prostate) had an evaluable flotufolastat F 18 scan. The overall DR was 83% (322/389) by majority read. Of the 389 patients with an evaluable flotufolastat F 18 scan, 188 had a baseline PSA <1 ng/mL and were eligible for the present analysis. Despite low patient numbers in some PSA categories, moderate to high DR were observed, with the patient‐level DR shown to increase with increasing baseline PSA. Overall, 68% (128/188) of patients with a PSA <1 ng/mL and 64% (77/121) of patients with a PSA <0.5 ng/mL had a positive flotufolastat F 18 scan by majority read. Regional DRs were broadly consistent across all PSA categories. Extrapelvic lesions were observed in 21% (25/121) of patients with a PSA <0.5 ng/mL, increasing to 39% (26/67) in patients with a PSA of ≥0.5 to 1 ng/mL. No serious adverse reactions were attributed to flotufolastat F 18 in the SPOTLIGHT study. Overall, 16 (4.1%) patients had at least one treatment‐emergent adverse event that was considered possibly related/related to flotufolastat F 18. 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). About Radiohybrid Prostate‐Specific Membrane Antigen (rhPSMA) Radiohybrid Prostate‐Specific Membrane Antigen (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 imaging isotopes for PET imaging, or with therapeutic isotopes for therapeutic use – providing the potential for creating a true theranostic technology. 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 sublicensed the therapeutic application to its sister company Blue Earth Therapeutics. Blue Earth Diagnostics received U.S. Food and Drug Administration approval for its radiohybrid PET diagnostic imaging product for use in prostate cancer in 2023. rhPSMA compounds for potential therapeutic use are investigational and have not received regulatory approval. Indication and Important Safety Information About POSLUMA INDICATION POSLUMA® (flotufolastat F 18) injection is indicated for positron emission tomography (PET) of prostate‐ specific membrane antigen (PSMA) positive lesions in men with prostate cancer • with suspected metastasis who are candidates for initial definitive therapy • with suspected recurrence based on elevated serum prostate‐specific antigen (PSA) level IMPORTANT SAFETY INFORMATION Image interpretation errors can occur with POSLUMA PET. A negative image does not rule out the presence of prostate cancer and a positive image does not confirm the presence of prostate cancer. The performance of POSLUMA for imaging metastatic pelvic lymph nodes in patients prior to initial definitive therapy seems to be affected by serum PSA levels and risk grouping. The performance of POSLUMA for imaging patients with biochemical evidence of recurrence of prostate cancer seems to be affected by serum PSA levels. Flotufolastat F 18 uptake is not specific for prostate cancer and may occur in other types of cancer, in non‐malignant processes, and in normal tissues. Clinical correlation, which may include histopathological evaluation, is recommended. Risk of Image Misinterpretation in Patients with Suspected Prostate Cancer Recurrence: The interpretation of POSLUMA PET may differ depending on imaging readers, particularly in the prostate/prostate bed region. Because of the associated risk of false positive interpretation, consider multidisciplinary consultation and histopathological confirmation when clinical decision‐making hinges on flotufolastat F 18 uptake only in the prostate/prostate bed region or only on uptake interpreted as borderline. POSLUMA use contributes to a patient’s overall long‐term cumulative radiation exposure. Long‐ term cumulative radiation exposure is associated with an increased risk for cancer. Advise patients to hydrate before and after administration and to void frequently after administration. Ensure safe handling to minimize radiation exposure to the patient and health care providers. The adverse reactions reported in ≥0.4% of patients in clinical studies were diarrhea, blood pressure increase and injection site pain. Drug Interactions: androgen deprivation therapy (ADT) and other therapies targeting the androgen pathway, such as androgen receptor antagonists, may result in changes in uptake of flotufolastat F 18 in prostate cancer. The effect of these therapies on performance of POSLUMA PET has not been established. To report suspected adverse reactions to POSLUMA, call 1‐844‐POSLUMA (1‐844‐767‐5862) or contact FDA at 1‐800‐FDA‐1088 or www.fda.gov/medwatch. Full POSLUMA prescribing information is available at www.posluma.com/prescribing‐information.pdf. 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. 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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