Radiotherapeutics

The landscape of medical radiotherapeutics is rapidly evolving, showcasing a multitude of innovative treatments that target specific cancers and related symptoms with unprecedented precision. Utilising various radionuclides, these therapies represent a new frontier in the fight against cancer, offering hope for more effective and personalised treatment options.

Central to this advancement is the use of Actinium-225 (Ac-225), an alpha-emitting radionuclide, in a range of promising therapies. Alpha particles, with their high energy and short range, are effective in destroying cancer cells while minimising collateral damage to surrounding healthy tissues.

For instance, Ac-225-DOTA-SP targets Substance P receptors in glioblastoma, a notably aggressive brain tumour, delivering alpha radiation directly to the tumour site. This targeted approach is echoed in Ac-225-DOTA-YS5 and Ac-225-FPI-2265, both aimed at treating prostate cancer through different mechanisms. Ac-225-DOTA-YS5 targets CD46 using monoclonal antibody IgG1, whereas Ac-225-FPI-2265 focuses on the Prostate-Specific Membrane Antigen (PSMA) with PSMA-I&T.

The targeting of neuroendocrine tumours (NETs) has also seen significant developments with agents like Ac-225-DOTATOC and Ac-225-RYZ101, which focus on somatostatin receptors, delivering alpha radiation precisely to tumour cells. Further, Ac-225-DOTAZOL for bone pain palliation in patients with bone metastases exemplifies the versatility of radiotherapeutics, directly targeting bone tissues to provide pain relief.

Beyond alpha emitters, beta-emitting radionuclides like Yttrium-90 (Y-90) and Lutetium-177 (Lu-177) are also making strides in radiotherapeutics. Y-90 is employed in treating hepatocellular carcinoma and non-Hodgkin’s lymphoma, while Lu-177 is used in therapies for prostate cancer and neuroendocrine tumours.

Expanding the repertoire, treatments like At-211-81C6 mAb (Neuradiab) target brain cancer by using Astatine-211, another alpha emitter, conjugated with the monoclonal antibody 81C6. Similarly, At-211-MABG, targeting adrenergic tissues, is being developed for conditions like paragangliomas and pheochromocytoma.

Furthermore, Radium-223 (Ra-223) in Radium Dichloride therapy stands out for its application in bone pain palliation, particularly for metastatic prostate cancer. This therapy mimics calcium and selectively targets bone metastases, delivering alpha radiation.

The field also sees the development of therapies like Iodine-131 (I-131) in various forms, such as I-131-Apamistamab (Iomab-B™) for acute lymphoblastic leukaemia and Hodgkin’s lymphoma and I-131-Metuximab for hepatocarcinoma. Each of these I-131-based therapies leverages the beta radiation emitted by I-131 to target specific cancer cells.

In conclusion, the diversity of radiotherapeutics, from alpha and beta emitters to different targeting mechanisms, underscores the remarkable progress in this field. These therapies are advancing and redefining cancer treatment, offering more precise, effective, and patient-tailored options. As research and clinical trials continue, these groundbreaking developments in radiotherapeutics are poised to significantly impact the future of cancer therapy.

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Yttrium-90 microspheres therapy targets liver tumours with precise radiation delivery
Radiotherapeutics

Yttrium-90 microspheres Therapy in Modern Oncology: An Overview of SIR-Spheres, TheraSpheres, and Beyond

Yttrium-90 microspheres therapy utilises brachytherapy to treat liver cancer, offering precise tumour targeting and extended survival.

Yttrium-90 microspheres Therapy in Modern Oncology: An Overview of SIR-Spheres, TheraSpheres, and Beyond Read Post »

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Yttrium-90 Citrate treats knee arthritis by targeting inflamed synovial tissue
Radiotherapeutics

Yttrium-90 Citrate for Radiosynovectomy: An Advanced Therapeutic Approach to Knee Arthritis

Yttrium-90 Citrate delivers targeted beta radiation, effectively treating synovial hypertrophy while minimising extra-articular radioactive escape risks.

Yttrium-90 Citrate for Radiosynovectomy: An Advanced Therapeutic Approach to Knee Arthritis Read Post »

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Alpha particle radionuclides deliver precise, powerful radiation for targeted therapy
Radiotherapeutics

Selected Alpha Particle Emitting Radionuclides for Therapeutic Nuclear Medicine

Alpha particle emitting radionuclides are highly effective in delivering targeted radiation therapy for various cancers.

Selected Alpha Particle Emitting Radionuclides for Therapeutic Nuclear Medicine Read Post »

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Thorium-227 Pelgifatamab targets PSMA, delivering precise alpha-particle radiation effectively
Radiotherapeutics

Thorium-227 Pelgifatamab: Advancing Alpha-Particle Therapy for Prostate and Brain Cancers

Thorium-227 Pelgifatamab utilises PSMA targeting and alpha emissions to destroy cancer cells while sparing healthy tissue effectively.

Thorium-227 Pelgifatamab: Advancing Alpha-Particle Therapy for Prostate and Brain Cancers Read Post »

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Thorium-227 Epratuzumab targets lymphoma cells with precise alpha radiation
Radiotherapeutics

Thorium-227 Epratuzumab: A Targeted Alpha Therapy for Relapsed or Refractory CD-22 Positive Non-Hodgkin’s Lymphoma

Thorium-227 Epratuzumab combines alpha-emitting thorium with CD-22 targeting epratuzumab, offering precision treatment for lymphoma patients.

Thorium-227 Epratuzumab: A Targeted Alpha Therapy for Relapsed or Refractory CD-22 Positive Non-Hodgkin’s Lymphoma Read Post »

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Rhenium-186 nano liposomes deliver targeted radiation therapy to tumours
Radiotherapeutics

Emerging Innovations in Brachytherapy: The Potential of Rhenium-186 Nano Liposomes for Brain Cancer Treatment

Rhenium-186 Nano Liposomes deliver targeted beta radiation directly to tumours, minimising surrounding tissue damage.

Emerging Innovations in Brachytherapy: The Potential of Rhenium-186 Nano Liposomes for Brain Cancer Treatment Read Post »

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Lead-212 ADVC001 precisely targets PSMA-positive tumours with alpha radiation
Radiotherapeutics

Lead-212 ADVC001: A Promising Alpha-Emitting PSMA-Targeting Radioligand for Advanced Prostate Cancer

Lead-212 ADVC001 offers innovative alpha-emitting therapy, targeting PSMA-positive mCRPC with precise and potent tumour eradication.

Lead-212 ADVC001: A Promising Alpha-Emitting PSMA-Targeting Radioligand for Advanced Prostate Cancer Read Post »

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PRRT targets tumours, delivering radiation while sparing surrounding healthy tissues
Radiotherapeutics

Peptide Receptor Radionuclide Therapy (PRRT): A Breakthrough in Treating Gastroenteropancreatic Neuroendocrine Tumours

Peptide Receptor Radionuclide Therapy utilises radiopharmaceuticals to target somatostatin receptor-expressing tumours, improving treatment outcomes significantly.

Peptide Receptor Radionuclide Therapy (PRRT): A Breakthrough in Treating Gastroenteropancreatic Neuroendocrine Tumours Read Post »

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