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Novartis is the latest drug company to buy up a radiopharmaceutical-focused biotech firm with its planned purchase of Mariana Oncology for $1 billion. Radiopharmaceuticals are not a new area for Novartis, which already sells the lutetium-177-based drugs Lutathera and Pluvicto. Mariana brings with it a roster of ligands with radionuclides that emit α and β particles. The company’s lead compound, MC-339, is an actinium-225-containing radioligand therapy to treat small-cell lung cancer.
This article was updated on June 14, 2024, to correct the isotope that Mariana Oncology’s lead compound contains. It is actinium-225, not actinium-255.
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