Evaluation of [18F]Fluoroethyl Triazole Labelled [Tyr3]-Octreotate Analogues for the Imaging of Neuroendocrine Tumours.

Summary

Radiolabelled somatostatin analogs are invaluable in the diagnosis and treatment of neuroendocrine tumours (NET). The most common positron emission tomography (PET) radiotracers used for the visualisation of NET are radiolabelled somatostatin analogs (SSAs) labelled with \[68Ga\]Ga-DOTA-peptides. However, \[68Ga\]Ga-DOTA-peptide radiolabelled SSAs have significant limitations in terms of accessibility and low throughput. The team at Imperial College London developed a novel radiotracer, \[18F\]fluoroethyl triazole labelled \[Tyr3\]-Octreotate analogue (\[18F\]-FET-βAG-TOCA), in an attempt to overcome these limitations. The FETONET study was designed to have 3 parts. The FETONET study was designed to have 3 parts. Part A evaluated the biodistribution, dosimetry and safety of \[18F\]FET-βAG-TOCA. Uptake was assessed at multiple time points over a 4 hour period. The data was analysed and an optimal imaging time point determined. Part B of the FETONET study involved the performance of whole body static \[18F\]FET-βAG-TOCA PET-CT imaging, at the optimal time point previously established, within a larger cohort of patients. Part C comprised a prospective non-inferiority study that analysed the \[18F\]FET-βAG-TOCA PET/CT data collected within Part A \& Part B and compared this to standard of care \[Ga68\]Ga-DOTA-peptide PET-CT imaging.

Conditions

• Neuroendocrine Tumors

Interventions

DRUG

[18F]-FET-βAG-TOCA

Single I.V. administration of a \[18F\]fluoroethyl triazole \[Tyr3\]Octreotate (\[18F\]-FET-βAG-TOCA). Patients will receive a maximum injected dose of 370MBq and will subsequently undergo PET/CT imaging.

Sponsors & Collaborators

• Imperial College Healthcare NHS Trust

  collaborator OTHER

• Royal Marsden NHS Foundation Trust

  collaborator OTHER

• University of Manchester

  collaborator OTHER

• The Christie NHS Foundation Trust

  collaborator OTHER

• Invicro

  collaborator OTHER

• Newcastle University

  collaborator OTHER

• Imperial College London

  lead OTHER

Principal Investigators

• Rohini Sharma · Imperial College London

Study Design

Allocation

NON_RANDOMIZED

Purpose

DIAGNOSTIC

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2014-05-14

Primary Completion

2018-10-17

Completion

2018-10-17