PMID- 35135467 OWN - NLM STAT- MEDLINE DCOM- 20220517 LR - 20230217 IS - 1874-4729 (Electronic) IS - 1874-4710 (Print) IS - 1874-4710 (Linking) VI - 15 IP - 2 DP - 2022 TI - Toxicity and Tolerability of (177)Lu-DOTA-TATE PRRT with a Modified Administered Activity Protocol in NETs of Variable Origin - A Phase 2 Registry Study. PG - 123-133 LID - 10.2174/1874471014666210810100435 [doi] AB - BACKGROUND: Peptide receptor radionuclide therapy (PRRT) has been recently approved for advanced, metastatic, or progressive neuroendocrine tumors (NETs). OBJECTIVE: This study reports the adverse events (AEs) observed with patient-tailored administered activity. METHODS: Fifty-two PRRT naive patients were treated with 177Lu-DOTATATE. The administered activity ranges between 2.78 and 5.55 GBq/cycle using the patient's unique characteristics (age, symptoms, blood work, and biomarkers). RESULTS: The protocol was well tolerated with the overwhelming majority of participants being forty- six (88%), completing all 4 induction therapy cycles. The median cumulative administered activity was 19.6 GBq (ranged 3.8-22.3 GBq). A total of 42/52 (81%) reported at least one symptom, and 43/52 (83%) had evidence of biochemical abnormality at enrollment that would meet grade 1 or 2 criteria for AEs. These symptoms only slightly increase with treatment to 50/52 (96%) and 51/52 (98%), respectively. The most common symptoms were mild fatigue (62%), shortness of breath (50%), nausea (44%), abdominal pain (38%), and musculoskeletal pain (37%). The most common biomarker abnormalities were mild anemia (81%), reduced estimated glomerular filtration rate (eGFR) (58%), increased alkaline phosphatase (ALP) (50%), and leukopenia (37%). Of critical importance, no 177Lu-DOTATATE related grade 3 or 4 AEs were observed. CONCLUSION: Tailoring the administered activity of 177Lu-DOTATATE to the individual patient with a variety of NETs is both safe and well-tolerated. No patient developed severe grade 3 or 4 AEs. Most patients exhibit symptoms or biochemical abnormality before treatment and this only slightly worsens following induction therapy. CI - Copyright(c) Bentham Science Publishers; For any queries, please email at epub@benthamscience.net. FAU - Khatami, Alireza AU - Khatami A AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. FAU - Sistani, Golmehr AU - Sistani G AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. AD - Division of Radiology, Department of Medical Imaging, Western University, London, ON, Canada. FAU - Sutherland, Duncan E K AU - Sutherland DEK AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. FAU - DeBrabandere, Sarah AU - DeBrabandere S AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. FAU - Reid, Robert H AU - Reid RH AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. FAU - Laidley, David T AU - Laidley DT AD - Division of Nuclear Medicine, Department of Medical Imaging, Western University, London, ON N645C1, Canada. LA - eng GR - 172567/Cancer Care Ontario CCO Canada/ PT - Clinical Trial Protocol PT - Journal Article PL - United Arab Emirates TA - Curr Radiopharm JT - Current radiopharmaceuticals JID - 101468718 RN - 0 (Heterocyclic Compounds, 1-Ring) RN - 0 (Organometallic Compounds) RN - 0 (Radiopharmaceuticals) RN - 0 (copper dotatate CU-64) RN - 1HTE449DGZ (1,4,7,10-tetraazacyclododecane- 1,4,7,10-tetraacetic acid) RN - RWM8CCW8GP (Octreotide) SB - IM MH - Clinical Trials, Phase II as Topic MH - Heterocyclic Compounds, 1-Ring MH - Humans MH - *Neuroendocrine Tumors/radiotherapy MH - Octreotide/adverse effects MH - *Organometallic Compounds/adverse effects MH - Positron-Emission Tomography MH - Radionuclide Imaging MH - Radiopharmaceuticals/adverse effects MH - Registries PMC - PMC9900697 OTO - NOTNLM OT - DOTATAE OT - Lu-177 OT - NET OT - PRRT OT - Toxicity OT - neuroendocrine tumor OT - peptide receptor radionuclide therapy OT - safety EDAT- 2022/02/10 06:00 MHDA- 2022/05/18 06:00 PMCR- 2023/02/06 CRDT- 2022/02/09 05:39 PHST- 2021/03/04 00:00 [received] PHST- 2021/05/21 00:00 [revised] PHST- 2021/05/24 00:00 [accepted] PHST- 2022/02/10 06:00 [pubmed] PHST- 2022/05/18 06:00 [medline] PHST- 2022/02/09 05:39 [entrez] PHST- 2023/02/06 00:00 [pmc-release] AID - CRP-EPUB-117222 [pii] AID - CRP-15-123 [pii] AID - 10.2174/1874471014666210810100435 [doi] PST - ppublish SO - Curr Radiopharm. 2022;15(2):123-133. doi: 10.2174/1874471014666210810100435.