This is a open-label, single-arm study to investigate the safety and efficacy of total neoadjuvant treatment (TNT) in patients with locally advanced resectable rectal cancer.
Standard treatment of rectal cancer is neoadjuvant capecitabine chemotherapy with radiotherapy, followed by total mesorectal excision. A new concept suggests organ preservation as an alternative to rectal excision in good responders after neoadjuvant radiochemotherapy to decrease surgical morbidity and increase quality of life. The rational is the fact that 15%-20% of patients have sterilized tumours after chemoradiotherpay for locally advanced rectal cancer. As compared to capecitabine alone, oxaliplatin and more intensified chemotherapy have been shown to increase tumor regression in the neoadjuvant chemoradiation setting. Meanwhile, prolong of time interval from the end of radiotherapy to assessment of tumor response could further increase pathologic complete response rate and complete clinical response rate. The objective of this trial is to increase the rate of clinical complete response for distal rectal cancer patients by optimizing tumour response. The investigators expect to increase chance of clinical complete response by using total neoadjuvant treatment regimen as compared to conventional chemoradiotherapy alone.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
98
Drug: Capecitabine, Oxaliplatin
External beam radiotherapy to the primary tumor, regional lymph nodes and clinical target volume
'Local excision' or 'Intersphincter resection' or 'Total mesorectal excision' or other surgeries
Sun Yat-sen University Cancer Center
Guangzhou, Guangdong, China
Rate of clinical complete response
Rate of clinical complete response
Time frame: 1.5 year after diagnosis
Ratio of sphincter preservation strategy
Number of patients with sphincter preservation through Watch and wait strategy, or local excision, or intersphincter resection, or low anterior resection, etc.
Time frame: 1.5 year after diagnosis
Rate of pathological complete response and tumor regression grade distribution
Rate of pathological complete response and tumor regression grade distribution
Time frame: 1.5 year after diagnosis
Acute toxicity
Acute toxicity according to CTCAE 5.0
Time frame: Within the first course of anti-tumor treatment
Rate of surgical complications
Rate of surgical complications
Time frame: 1.5 year after diagnosis
Long-term anal function
Long-term anal function according to Wexner Continence Grading Scale
Time frame: 1.5 year after diagnosis
Long-term toxicity grading
Long-term toxicity grading according to CTCAE 5.0
Time frame: 3 year after the end of the first course of anti-tumor treatment
ECOG standard score
ECOG standard score
Time frame: 1.5 year after diagnosis
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Watch and wait strategy recommendation and discussion for cCR patients
3 year disease free survival
3 year disease free survival
Time frame: 3 year after the end of the first course of anti-tumor treatment
5 year overall survival
5 year overall survival
Time frame: 5 year after the end of the first course of anti-tumor treatment