PeptideTrace
ApprovedPeptide Receptor Radionuclide Therapy

Lutetium Lu-177 Dotatate

Lutathera

A

Evidence Grade A — Regulatory approved. 18 published studies. 85 registered clinical trials.

85 trials18 studiesUSEUCA

Licensed Indications

  • Neuroendocrine Tumors
  • Gastroenteropancreatic Neuroendocrine Tumors

User Experience Reports

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Overview

Lutetium Lu-177 dotatate (sold as Lutathera) is a targeted radiation treatment for neuroendocrine tumours — rare cancers, often found in the digestive system, that display specific receptors on their surface. It works like a guided missile: a tumour-seeking peptide carries a radioactive atom directly to the cancer cells, destroying them from within while largely sparing surrounding tissue. It is given as four intravenous infusions, eight weeks apart.

Research Activity

18studies
Human 10
Reviews 5

18 published studies: 10 human, 0 animal, 0 in-vitro, 5 reviews

Regulatory Status

US
FDA-approved(FDA)
EU
EMA-authorised(EMA)
CA
Not approved by Health Canada(Health Canada)

Legal Status

USPrescription drug (Rx)
EUPrescription medicine (EU centralised authorisation)
CANot applicable (not approved)

Summary

Lutathera is marketed by Novartis (approved January 2018) for somatostatin receptor-positive gastroenteropancreatic neuroendocrine tumours (GEP-NETs) in adults. It is administered as four intravenous infusions given every 8 weeks.

The NETTER-1 trial showed dramatic results: at 20 months, 65% of patients on Lutathera had not progressed compared to only 11% on high-dose octreotide alone. Patients must have somatostatin receptor-positive tumours confirmed by nuclear imaging before treatment. The main risks are bone marrow suppression (affecting blood cell production) and kidney toxicity. Lutathera established peptide receptor radionuclide therapy as a mainstream cancer treatment approach and paved the way for similar radiopharmaceuticals in other cancers.

Mechanism of Action

Neuroendocrine tumour cells abundantly display somatostatin receptors on their surface. Lutathera consists of a somatostatin-like peptide (that finds and binds to these receptors) attached via a chemical linker to a radioactive atom (lutetium-177). Once the peptide docks onto the tumour cell's receptor, the whole complex is pulled inside the cell. The lutetium-177 then emits beta radiation that damages the tumour cell's DNA, causing it to die. The radiation penetrates only about 2mm of tissue, limiting collateral damage to surrounding healthy tissue.

Research Summary

The NETTER-1 trial showed dramatic results: at 20 months, 65% of patients on Lutathera had not progressed compared to only 11% on high-dose octreotide alone. This established peptide receptor radionuclide therapy as a mainstream cancer treatment and paved the way for similar radiopharmaceuticals targeting other cancers. Patients must have their tumours confirmed as somatostatin receptor-positive by a nuclear imaging scan before treatment. The main risks are bone marrow suppression (affecting blood cell production) and kidney toxicity, and there is a small long-term risk (approximately 2%) of secondary blood cancers (MDS/AML). A follow-up trial (NETTER-2) has evaluated use earlier in the treatment course with positive results, and combination approaches with other cancer drugs are in active study.

Clinical Trials

NCT02705313N/AUnknown

EAP 177Lu-DOTA0-Tyr3-Octreotate for Inoperable, SSR+, NETs, Progressive Under SSA Tx

Advanced Accelerator Applications
NCT06955169Phase IIRecruiting

Comparing the Radiopharmaceutical Drug, [177Lu]Lu-DOTATATE, to Standard of Care Treatment for Patients With Meningioma That Has Come Back After Prior Treatment

RTOG Foundation, Inc.Endpoint: Progression Free Survival (PFS)Completion: 2030-08-01
NCT04529044Phase IINot Yet Recruiting

177Lu-DOTATATE for the Treatment of Stage IV or Recurrent Breast Cancer

OHSU Knight Cancer InstituteEndpoint: Objective response rate (ORR)Completion: 2026-12-20
NCT07150546Phase IRecruiting

Combination External Radiation and PRRT for Large GI Neuroendocrine Tumors.

Emory UniversityEndpoint: Incidence of Acute Grade 3+ Non-Hematologic Adverse EventsCompletion: 2027-09-30
NCT06878664Phase IIIRecruiting

Randomized Interval Assessment Trial of Lu177-Dotatate in Slowly Progressive G1-2 Advanced Midgut Neuroendocrine Tumors

Grupo Espanol de Tumores NeuroendocrinosEndpoint: Rate of Grade 2-5 hematological toxicityCompletion: 2029-01-01
View all 85 trials on ClinicalTrials.gov →

Regulatory Timeline

2017
Regulatory

EMA Marketing Authorisation

2018
Regulatory

FDA ORIG 1

2020
Regulatory

FDA SUPPL 10

2020
Regulatory

FDA SUPPL 1

2022
Regulatory

FDA SUPPL 20

2022
Regulatory

FDA SUPPL 19

2022
Regulatory

FDA SUPPL 23

2023
Regulatory

FDA SUPPL 26

2024
Regulatory

FDA SUPPL 31

2024
Regulatory

FDA SUPPL 32

Related Compounds

Exenatide

Approved
GLP-1 Receptor Agonist

Exenatide was the first GLP-1 receptor agonist approved anywhere, reaching the market as Byetta in April 2005. The once-weekly formulation Bydureon followed in 2012. Clinical trials showed blood sugar reductions (HbA1c) of 1.6–1.9% and modest weight loss of 2–4 kg. The EXSCEL cardiovascular outcomes trial, involving over 14,700 patients, showed a trend toward cardiovascular benefit but narrowly missed statistical significance. While exenatide was groundbreaking as the first in its class, it has been largely overtaken by newer GLP-1 treatments that offer greater efficacy, less frequent dosing, and proven cardiovascular benefits. It remains available and in clinical use, particularly in combination products.

Lixisenatide

Approved
GLP-1 Receptor Agonist

Lixisenatide was marketed as Adlyxin in the US (approved July 2016), though it has since been discontinued in the US market. The ELIXA cardiovascular trial, involving over 6,000 patients, was the first cardiovascular outcomes trial for any GLP-1 medication to report results. It showed a neutral cardiovascular profile — neither harmful nor beneficial — meeting safety requirements but not demonstrating the heart benefits later shown by semaglutide and liraglutide. Lixisenatide found its primary clinical role in combination with basal insulin, marketed as Soliqua (lixisenatide plus insulin glargine). This combination addresses both fasting blood sugar (via insulin) and post-meal spikes (via lixisenatide) in a single daily injection. As a standalone treatment, it has been largely superseded by more potent GLP-1 medications.

Pramlintide

Approved
Amylin Analogue

Pramlintide is marketed as Symlin (approved March 2005) and remains the only approved amylin-based treatment. It is used alongside mealtime insulin in both type 1 and type 2 diabetes. Clinical trials showed modest blood sugar improvements (HbA1c reductions of 0.2–0.6%) and approximately 2.3 kg of weight loss — less dramatic than GLP-1 treatments but meaningful as an add-on therapy. Symlin carries a boxed warning for severe hypoglycaemia, particularly when combined with insulin, and requires careful dose adjustment. Practical uptake has been limited by the need for separate injections at each meal alongside existing insulin injections. Despite its modest clinical impact, pramlintide remains the only medication that addresses the amylin deficiency in diabetes, filling a distinct biological role that GLP-1 treatments do not cover.