This is a prospective open label single-arm, single-institution phase II clinical trial to test the efficacy of neoadjuvant treatment with IXO (Irinotecan, Capecitabine \[Xeloda\], Oxaliplatin) followed by chemoradiotherapy and resection in patients with resectable non-metastatic primary rectal cancer of stage cT3-T4 N0-N2.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
15
IXO regimen is administered as following: irinotecan 160 mg/m2 i.v. (over 60-90 minutes) with oxaliplatin 100 mg/m2 i.v. (over 120 minutes) on day 1, followed by capecitabine 950 mg/m2 PO, b.i.d. on days 2-15, every 3 weeks. Each cycle of IXO lasts 21 days, with the subsequent cycle to start on day 22.
The Ottawa Hospital Cancer Centre
Ottawa, Ontario, Canada
Pathological complete response (pCR)
To test the efficacy of neoadjuvant treatment with IXO followed by chemoradiotherapy and surgical resection, evaluated as histological therapy-induced tumour regression, assessed by the rate of pathological complete response (pCR) at the primary tumor site (pT0)
Time frame: 26 weeks
Objective Response
Objective Response by MRI - post IXO and post RCT
Time frame: 12 weeks and 18 weeks
Number of Participants with Adverse Events as a Measure of Safety and Tolerability
Toxicity according to the NCI Common Terminology Criteria for Adverse Events (CTCAE) v.3.0 and drug safety
Time frame: every 3 weeks during neoadjuvant chemotherapy; before CRT; 3rd week of CRT; 2 days, 3 weeks and 6 weeks post CRT; pre-op; 2 days and 4 weeks post-op
Recurrence
Rates of local and distant disease recurrence
Time frame: q6 months
RFS, PFS, TTR
Recurrence free survival (RFS), progression free survival (PFS), time to recurrence (TTR)
Time frame: q6 months
Quality of life
Quality of life (QoL) as assessed by the EORTC QLQ-C30 scale
Time frame: enrolment, 12 weeks, 18 weeks, 26 weeks
Surgical morbidity and mortality
post-operative
Time frame: 26 weeks
Rate of post-operative sphincter preservation
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post-operative
Time frame: 26 weeks
OS
overall survival (OS)
Time frame: q6 months first 2 years and annually thereafter