To evaluate the survival benefit of pre-operation chemotherapy of primary tumor tesection (PTR) compared upfront PTR for colorectal cancer (CRC) patients with an asymptomatic resectable primary tumor and synchronous unresectable liver-limited metastases with conversion therapy intent.
Fast recovery with fewer postoperative complications, prevention of potential tumor-related complications during chemotherapy, life quality improvement, and also can alleviate the tumor load of patients, are some advantages of PTR that may play a role in improving cancer-specific survival. However, it should be pointed out that nearly all the retrospective and prospective studies for the beneficial of PTR enrolled more multi-organ metastases mCRC patients, and with palliative treatment purpose. As for unresectable colorectal liver-limited metastases (CRLMs) with good Eastern Cooperative Oncology Group performance status (ECOG PS), the primary objective is to make metastases resectable by high-intensity conversion therapy and achieved a state of no-evidence of disease. PTR were preferred performed before enrollment in some related RCT studies, including the CELIM study, CAIRO and CAIRO2 studies. Pooled-analysis of our two RCT studies, PTR pre or post chemotherapy for these unresectable liver-limited metastases patients had less morbidities and no mortalities, but no RCTs have focused on survival benefit of pre-operation chemotherapy of PTR for unresectable CRLMs.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
320
Chemotherapy regimen with either mFOLFOX6 plus cetuximab, bevacizumab or mFOLFOX6 alone were allocated, according the RAS genotype and patient affordability.
Zhongshan hospital, Fudan university
Shanghai, Shanghai Municipality, China
Progression-free survival
Time from randomization to the date of disease progression or to death of any cause
Time frame: Up to 3 years
Overall survival
Time from randomization to death from any cause or the date of the last follow-up
Time frame: Up to 3 years
Tumor response
Response according to RECIST 1.1
Time frame: Up to 6 months
Secondary resection rate Second radical resectability
The rate of patients converted to resection for liver metastases
Time frame: Up to 6 months
Surgical complications
The proportion of patients with any complications occurred within 30 days after surgery
Time frame: 30 days after surgery
Toxicity of chemotherapy
Patients will be evaluated for Adverse Events at the start of each treatment cycle according to NCI CTC 3.0 criteria
Time frame: Up to 6 months
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