The Radiation Metabolic Signature of Patient Undergoing Radiotherapy. A

Status Completed

Clinical Trial Summary

Rationale: Local radiotherapy applied in the treatment of tumors changes the metabolic profile in the exposed area and/or systemically and specific radiation biomarkers can be identified in the respective matrices.

Purpose: This is a pilot study to verify in humans the results obtained from two animal models exposed to ionizing gamma-radiation. The classification of patients results from the treatment volume of radiotherapy for cancer disease. Two patient groups with breast cancer undergoing high-dose radiotherapy are selected and compared to control group of age matched healthy women.

Clinical Trial Description

Background

Humans are exposed to ionizing radiation from several sources. Gamma-radiation exposure induces thereby both short- and long-term adverse effects. The radiation injuries to be expected in humans in the acute stage (days to some weeks after radiation exposure) correlate with the radiation dose that the individual has received. With very high doses gastrointestinal syndrome leads to death within a few days. The survival of the individual in the acute stage is therefore dramatically dependent on the rapid application of suitable therapies. It is decisive here to identify in the shortest possible time those persons who have been exposed to a critical radiation dose and to estimate the dose received in order to apply an adequate therapy. There are no satisfying test methods available today, which would enable the mass screening for radiation injury.

Furthermore to identify changes in the local or systemic human metabolic fingerprint, which are useful for the prediction of the individual sensitivity of patients to radiotherapy and / or lead to a better understanding of the molecular mechanisms involved in radiotherapy.

Objective

Primary: The primary endpoint is to affirm the results from the animal model in radiation metabolomics in human radiotherapy treatment.

Secondary: The secondary endpoints are to find new potential biomarkers for radiation biodosimetry in humans and to identify changes in the different sequences in measuring from local (sebum) and systemic (blood, saliva and urine) material.

Methods

Gas chromatographic separation and mass spectrometric detection of the metabolites present in a given matrix (urine, saliva, plasma, sebum). ;

Study Design

Related Conditions & MeSH terms

Breast Cancer

Clinical Trial Details

NCT number	NCT01975558
Study type	Observational
Source	University Hospital Inselspital, Berne
Contact
Status	Completed
Phase
Start date	June 26, 2014
Completion date	November 12, 2019

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

The Radiation Metabolic Signature of Patient Undergoing Radiotherapy. A Pilot Study

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms