The TNTRect trial is a prospective observational study that will evaluate the outcome of MR-guided stereotactic body radiotherapy (SBRT) with a simultaneous integrated boost in a hypofractionated treatment of rectum cancer. Patients will be treated in 5 daily fractions of 5 Gy within an overall treatment time (OTT) of 5 days. A simultaneous integrated boost (SIB) till 30Gy will be delivered to the gross tumor volume. Patients will be treated with daily adaptive radiotherapy and online tumor gating on the MRIdian system (ViewRay Inc.). The aim of the study is to improve the complete clinical response rate to offer more patients an organ preserving approach. The primary endpoint is patient response to the treatment, assessed by endoscopy and MRI, or by medical pathology reports after potential resection was performed. As secondary endpoints local control, disease-free survival, overall survival and the patient's quality of life \& hospital anxiety and depression will be measured.
Study Type
OBSERVATIONAL
Enrollment
35
radiotherapy during 5 days given in 5 weekdays with simultaneous integrated boost
Questionnaires consisting of 3 quality of life scales and 1 mental state scale: * EORTC QLQ-C30 * EORTC QLQ-CR29 * Low Anterior Resection Syndrome Score (LARS) questionnaire * Hospital Anxiety and Depression Scale (HADS) questionnaire
UZ Brussel - Dienst Radiotherapie
Jette, Brussels Capital, Belgium
RECRUITINGResponse to therapy
After radiotherapy and chemotherapy are administered, the patient will be evaluated for a potential watchful-waiting approach where, together with the patient, can be opted too not perform a TME (total mesorectal excision). This outcome measure registers if the therapy works.
Time frame: up to 25 weeks after start of radiotherapy
Quality of life assessment via QLQ-C30
Quality of life according to EORTC Quality of life Questionnaire QLQ-C30
Time frame: from the start of radiotherapy until 5 years after treatment
Colorectal specific quality of life assessment via QLQ-CR29
Colorectal specific quality of life according to EORTC Quality of life Questionnaire QLQ-CR29
Time frame: from the start of radiotherapy until 5 years after treatment
Bowel functioning specific quality of life assessment via LARS score
Bowel functioning quality of life according to Emmertsen and Lauberg's\[1\] Quality of life Questionnaire LARS. \[1\]: Emmertsen KJ, Laurberg S. Low anterior resection syndrome score: development and validation of a symptom-based scoring system for bowel dysfunction after low anterior resection for rectal cancer. Ann Surg. 2012;255:922-8. In that scientific publication, the authors introduced a practical and psychometrically robust instrument for examining bowel function (after surgery in rectal cancer), which reflects impact on quality of life.
Time frame: from the start of radiotherapy until 5 years after treatment
Anxiety and depression state via HADS
Hospital Anxiety and Depression Scale (HADS) according to Zigmond and Snaith \[2\]. \[2\]: Zigmond AS, Snaith RP. The hospital anxiety and depression scale. Acta Psychiatr Scand. 1983 Jun;67(6):361-70. In that scientific publication, the authors introduced a self-assessment scale to be a reliable instrument for detecting states of depression and anxiety in the setting of an hospital medical outpatient clinic.
Time frame: from the start of radiotherapy until 5 years after treatment
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