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  • Novel PET agent...

Novel PET agent effectively detects multiple cancers, identifies patients for targeted therapies

Written By : Dr. Kamal Kant Kohli Published On 2022-11-19T10:00:36+05:30  |  Updated On 19 Nov 2022 4:11 PM IST
Novel PET agent effectively detects multiple cancers, identifies patients for targeted therapies
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A new molecular imaging radiotracer can precisely diagnose a variety of cancers, providing a roadmap to identify patients who may benefit from targeted radionuclide therapies. In the largest medical study of its kind, researchers found that 68Ga-PentixaFor demonstrated high image contrast in hematologic malignancies, small cell lung cancer, and adrenocortical neoplasms. This research was published in the November issue of The Journal of Nuclear Medicine.

The imaging agent 68Ga-PentixaFor is used to detect the C-X-C motif chemokine receptor 4 (CXCR4). Chemokine receptor expression is a predictor of poor prognosis in cancer patients, as it promotes the growth of malignant cells and inhibits anti-tumor response.

"Knowing which cancers have increased CXCR4 expression can significantly impact clinical tumor staging and, subsequently, affect patient management and treatment decisions," said Andreas Buck, director of the department of nuclear medicine at University Hospital Würzburg in Würzburg, Germany. "68Ga-PentixaFor PET is of particular interest because it offers improved lesion detection rates over other imaging modalities, such as MRI, CT, and even FDG PET."

In the study, researchers assessed 68Ga-PentixaFor uptake and image contrast to determine the most relevant clinical applications of CXCR4-directed imaging. Two study sites performed 68Ga-PentixaFor PET on 690 patients with 35 different types of cancer. Images were interpreted and statistical analyses performed.

Very high tracer uptake was found in patients with multiple myeloma, adrenocortical carcinoma, mantle cell lymphoma, adrenocortical adenoma, and small cell lung cancer. Comparable results were recorded for image contrast.

"These results suggest clinical scenarios in which 68Ga-PentixaFor PET may prove beneficial for directing CXCR4-targeted therapies," said Buck. "This is of particular importance for malignancies that lack a more suitable imaging modality. A pivotal phase III study is planned to continue this research in the second quarter of 2023."

Reference:

Andreas K. Buck, Alexander Haug, Niklas Dreher, Alessandro Lambertini, Takahiro Higuchi, Constantin Lapa, Alexander Weich, Martin G. Pomper, Hans-Jürgen Wester, Anja Zehndner, Andreas Schirbel, Samuel Samnick, Marcus Hacker, Verena Pichler, Stefanie Hahner, Martin Fassnacht, Hermann Einsele, Sebastian E. Serfling and Rudolf A. Werner Journal of Nuclear Medicine November 2022, 63 (11) 1687-1692; DOI: https://doi.org/10.2967/jnumed.121.263693

Journal of Nuclear Medicinetargeted therapiestargeted radionuclidehematologic malignancieslung cancercancer patientMRICTmyelomaadrenocortical carcinoma
Source : Journal of Nuclear Medicine
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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