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Lutetium (177 Lu) oxodotreotide or 177 Lu dotatate, brand name Lutathera, is a chelated complex of a radioisotope of the element lutetium with dotatate, used in peptide receptor radionuclide therapy. Specifically, it is used in the treatment of cancers which express somatostatin receptors. [5] It is a radiolabeled somatostatin analog. [3] [6] [7]
DOTA-TATE can be reacted with the radionuclides gallium-68 (T 1/2 = 68 min), lutetium-177 (T 1/2 = 6.65 d) and copper-64 (T 1/2 = 12.7 h) to form radiopharmaceuticals for positron emission tomography (PET) imaging or radionuclide therapy. 177 Lu DOTA-TATE therapy is a form of peptide receptor radionuclide therapy (PRRT) which targets ...
177 Lu-DOTATATE was associated with limited acute toxic effects. In neuroendocrine tumor patients with advanced well-differentiated disease and progression on somatostatin analogs, 177 Lu-DOTATATE is likely to reduce the risk of disease progression and be associated with quality-of-life benefits. [19] [20]
This is a type of targeted therapy which uses the physical, chemical and biological properties of the radiopharmaceutical to target areas of the body for radiation treatment. [3] The related diagnostic modality of nuclear medicine employs the same principles but uses different types or quantities of radiopharmaceuticals in order to image or ...
Lutetium-177 labelled edotreotide (177 Lu-DOTA-TOC), with the trade name Solucin, is the subject of a phase 3 clinical trial for treatment of GEP-NETs. [ 7 ] [ 8 ] It was granted orphan drug designation by the European Medicines Agency in 2014.
Lutetium (177 Lu) chloride is a radioactive compound used for the radiolabeling of pharmaceutical molecules, aimed either as an anti-cancer therapy or for scintigraphy (medical imaging). [ 5 ] [ 6 ] It is an isotopomer of lutetium(III) chloride containing the radioisotope 177 Lu , which beta decays with a half-life of 6.64 days.
As well as diagnosis and staging of NETs, 68 Ga DOTA conjugated peptide imaging may be used for planning and dosimetry in preparation for lutetium-177 or yttrium-90 DOTA therapy. [35] [36] In June 2016, Netspot (kit for the preparation of gallium Ga-68 dotatate injection) was approved for medical use in the United States. [37] [38]
Forty radioisotopes have been characterized, with the most stable, besides 176 Lu, being 174 Lu with a half-life of 3.31 years, and 173 Lu with a half-life of 1.37 years. All of the remaining radioactive isotopes have half-lives that are less than 9 days, and the majority of these have half-lives that are less than half an hour.