TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Berger, Anne Katrin
A1  - Gall, Carl von
A1  - Abel, Ulrich
A1  - Delorme, Stefan
A1  - Kloor, Matthias
A1  - Ose, Jennifer
A1  - Weber, Tim Frederik
A1  - Stange, Annika
A1  - Haag, Georg Martin
A1  - Haberkorn, Uwe
A1  - Lordick, Florian
A1  - Jäger, Dirk
T1  - A phase II study for metabolic in vivo response monitoring with sequential 18FDG-PET-CT during treatment with the EGFR-monoclonal-antibody cetuximab in metastatic colorectal cancer: the Heidelberg REMOTUX trial
JF  - BMC Cancer
N2  - Background: The epidermal growth factor receptor monoclonal antibody cetuximab has proven activity in metastatic colorectal cancer. To date, the mechanisms of action are not completely understood. Especially the impact on tumor glucose metabolism, or tumor vascularization remains largely unclear. The understanding of mechanisms such as early changes in tumor metabolism is of clinical importance since there may be a substantial influence on choice and sequence of drug combinations. Early signals of response to cetuximab may prove useful to identify patients having a relevant clinical treatment benefit. The objective of this trial is to evaluate the predictive relevance of the relative change in 18 F-Fluorodeoxyglucose tumor uptake for early clinical response during short-term single agent treatment with cetuximab. Early clinical response will be routinely measured according to the response evaluation criteria in solid tumors. Accompanying research includes cytokine immune monitoring and analysis of tumor proteins and tumor genes.

Methods/Design: The REMOTUX trial is an investigator-initiated, prospective, open-label, single-arm, single-center early exploratory predictive study. The first 18 F-FDG PET-CT is conducted at baseline followed by the run-in phase with cetuximab at days 1 and 8. At day 14, the second 18 F-FDG PET-CT is performed. Subsequently, patients are treated according to the Folfiri-cetuximab regimen as an active and approved first-line regimen for metastatic colorectal carcinoma. At day 56, clinical response is evaluated with a CT-scan compared to the baseline analysis. Tracer uptake is assessed using standardized uptake values (SUVs). The main hypothesis to be tested in the primary analysis is whether or not the relative change in the SUV from baseline to day 14 has any predictive relevance for early clinical response determined at day 56. Patients are followed until death from any cause or until 24 months after the last patient has ended trial treatment.

Discussion: The aim of this trial is to evaluate metabolic changes in metastatic colorectal cancer during short-term single agent treatment with cetuximab and to analyse their potential of predicting early clinical response. This could be helpful to answer the question if early identification of patients not responding to cetuximab is possible.
KW  - Colorectal cancer
KW  - Metastases
KW  - Cetuximab
KW  - Metabolic imaging
KW  - 18F-FDG PET CT
KW  - Dickdarmkrebs
KW  - Metastase
KW  - Bildgebendes Verfahren
Y1  - 2012
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-31739
SN  - 1471-2407
SS  - 1471-2407
U6  - https://doi.org/10.25968/opus-3173
DO  - https://doi.org/10.25968/opus-3173
VL  - 12
SP  - 6
S1  - 6
ER  -