PMID- 34907652 OWN - NLM STAT- MEDLINE DCOM- 20220502 LR - 20220502 IS - 1868-6982 (Electronic) IS - 1868-6974 (Linking) VI - 29 IP - 4 DP - 2022 Apr TI - Safety and response after peptide receptor radionuclide therapy with (177) Lu-DOTATATE for neuroendocrine tumors in phase 1/2 prospective Japanese trial. PG - 487-499 LID - 10.1002/jhbp.1101 [doi] AB - BACKGROUND: The present prospective phase 1/2 study aimed to elucidate the efficacy and safety of (177) Lu-DOTATATE (four cycles of 7.4 GBq) in Japanese patients with unresectable, progressive neuroendocrine tumors (NETs). METHODS: From April 2018 to October 2020, 15 patients with advanced NETs (five midgut, eight pancreatic, and two lung NETs) were enrolled. Objective response rate (ORR), progression-free survival (PFS), and adverse events (AEs) were evaluated. Pharmacokinetics and dosimetry were also evaluated in three midgut patients. RESULTS: The mean absorbed doses of (177) Lu-DOTATATE to the kidneys (20.7 Gy/29.6 GBq) and the bone marrow (0.631 Gy/29.6 GBq) were within the radiation tolerance doses. The ORR of the whole population was 53% (90% CI, 30%-76%). ORRs of the midgut and non-midgut NETs were 60% (90% CI, 19%-92%) and 50% (90% CI, 22%-78%), respectively. There was no difference in the maximum reduction rate of the sum of the target lesion diameters between patients with midgut and non-midgut NET. The median PFS was not reached; the PFS rate at 52 weeks was 80% (90% CI, 56.1%-91.7%). AEs of Grade 3 or higher were lymphopenia (47%) and leukopenia (7%). CONCLUSION: (177) Lu-DOTATATE demonstrated remarkable tumor shrinkage and tolerability in Japanese patients with advanced NETs. CI - (c) 2021 Japanese Society of Hepato-Biliary-Pancreatic Surgery. FAU - Kudo, Atsushi AU - Kudo A AUID- ORCID: 0000-0002-5301-3847 AD - Department of Hepatobiliary and Pancreatic Surgery, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Tateishi, Ukihide AU - Tateishi U AD - Department of Diagnostic Radiology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Yoshimura, Ryoichi AU - Yoshimura R AUID- ORCID: 0000-0001-9435-1503 AD - Department of Radiation Therapeutics and Oncology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Tsuchiya, Junichi AU - Tsuchiya J AD - Department of Diagnostic Radiology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Yokoyama, Kota AU - Yokoyama K AD - Department of Diagnostic Radiology, Graduate School of Medicine, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Takano, Shoko AU - Takano S AD - Department of Radiation Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. FAU - Kobayashi, Noritoshi AU - Kobayashi N AUID- ORCID: 0000-0002-9181-3722 AD - Department of Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. FAU - Utsunomiya, Daisuke AU - Utsunomiya D AUID- ORCID: 0000-0002-1723-1724 AD - Department of Diagnostic Radiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. FAU - Hata, Masaharu AU - Hata M AUID- ORCID: 0000-0002-4133-2592 AD - Department of Radiation Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. FAU - Ichikawa, Yasushi AU - Ichikawa Y AD - Department of Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan. FAU - Tanabe, Minoru AU - Tanabe M AUID- ORCID: 0000-0003-4875-1471 AD - Department of Hepatobiliary and Pancreatic Surgery, Tokyo Medical and Dental University, Tokyo, Japan. FAU - Hosono, Makoto AU - Hosono M AUID- ORCID: 0000-0001-8040-3245 AD - Department of Radiation Oncology, Faculty of Medicine, Kindai University, Osakasayama, Japan. FAU - Kinuya, Seigo AU - Kinuya S AD - Department of Nuclear Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan. LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article DEP - 20211227 PL - Japan TA - J Hepatobiliary Pancreat Sci JT - Journal of hepato-biliary-pancreatic sciences JID - 101528587 RN - 0 (Radioisotopes) RN - 0 (Radiopharmaceuticals) RN - 0 (Receptors, Peptide) RN - 0 (copper dotatate CU-64) SB - IM MH - Humans MH - Japan MH - *Neuroendocrine Tumors/drug therapy/radiotherapy MH - Positron-Emission Tomography MH - Prospective Studies MH - Radioisotopes/adverse effects MH - Radionuclide Imaging MH - Radiopharmaceuticals/adverse effects/pharmacokinetics MH - Receptors, Peptide/therapeutic use OTO - NOTNLM OT - lung OT - lymphopenia OT - midgut OT - pancreas OT - pharmacokinetics of 177Lu-DOTATATE EDAT- 2021/12/16 06:00 MHDA- 2022/05/03 06:00 CRDT- 2021/12/15 07:41 PHST- 2021/11/11 00:00 [revised] PHST- 2021/10/04 00:00 [received] PHST- 2021/11/29 00:00 [accepted] PHST- 2021/12/16 06:00 [pubmed] PHST- 2022/05/03 06:00 [medline] PHST- 2021/12/15 07:41 [entrez] AID - 10.1002/jhbp.1101 [doi] PST - ppublish SO - J Hepatobiliary Pancreat Sci. 2022 Apr;29(4):487-499. doi: 10.1002/jhbp.1101. Epub 2021 Dec 27.