64Cu-ATSM PET/CT in Rectum Cancer (TEP 64Cu-ATSM-Rectum)

Status Active, not recruiting

Clinical Trial Summary

This phase II trial is assessing how 64Cu-ATSM (64Cu-copper(II) diacetylbis(N4-methylthiosemicarbazone)) PET/CT scan could predict neo adjuvant treatment response in rectum cancer locally advanced

Clinical Trial Description

The purpose of this study is to evaluate early and late tumor uptake of 64Cu-ATSM in predicting histological response to neo-adjuvant chemo-radiotherapy treatment in patients with locally advanced rectal cancer. Patients receive pre-therapeutic CT scan, Pelvic MRI and 18FDG (fluorodeoxyglucose) PET/CT (positron emission tomography) scan within 45 days before enrollment. 64Cu-ATSM PET/CT scan is done before chemoradiotherapy treatment start. About 3 MBq/Kg of 64Cu-ATSM are injected intravenously, two acquisition sequences are performed 1 hour and 23 to 25 hours after injection in order to evaluate early and late tumor uptake of 64Cu-ATSM. Patients are treated for 5 weeks by Capecitabine chemotherapy (1600 mg/m2/day) combined to 50 Gy radiotherapy. Pelvic MRI is performed 4 weeks after chemotherapy in order to evaluate the treatment efficacy. Surgery is scheduled 6 to 8 weeks after chemoradiotherapy. Tissue samples from previously collected rectal biopsy (obtained for diagnosis) and from surgery are used for assessing oxidative stress markers by Immuno-histochemical analysis. Chest, abdomen and pelvis CT scan is performed every 6 months after surgery in order to assess progression free survival. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03951337
Study type	Interventional
Source	Institut Cancerologie de l'Ouest
Contact
Status	Active, not recruiting
Phase	Phase 2
Start date	April 26, 2019
Completion date	January 2026

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