Neoadjuvant Treatment, Radiotherapy, Rectal Cancer
Conditions
Keywords
rectal cancer, neoadjuvant chemoradiation, IMRT-SIB, adaptive radiotherapy
Brief summary
Aim of the study is to evaluate achievement of complete pathologic response (pCR) in high-risk rectal cancer treated with neoadjuvant concomitant chemotherapy plus adaptive-intensity modulated imaging-guided radiotherapy
Detailed description
AIDA-RE-1 is an interventional prospective trial for the treatment of locally advanced high-risk rectal cancer. In neoadjuvant setting, patients are treated with standard chemotherapy plus experimental radiotherapy. The total dose to clinical target volume (CTV, rectum and locoregional lymph nodes) is 45 Gy, with a concomitant boost of 5 Gy to gross tumor volume (GTV), delivered with IMRT-SIB (intensity modulated radiotherapy-simultaneous integrated boost) technique in 25 fractions. After 2 weeks of treatment, patients are evaluated with 18 FDG-PET and sequential boost of 5 Gy (in 2 fractions) is planned.
Interventions
Sponsors
Study design
Eligibility
Inclusion criteria
* histologically confirmed diagnosis of locally advanced rectal cancer (cT3N+, cT4Nx, local relapse, cT3N0); cT2N+ is acceptable if low rectum is involved * M0 * ECOG 0-2
Exclusion criteria
* M1 * familial adenomatous polyposis (FAP), non-polyposis hereditary colorectal cancer, inflammatory bowel disease * severe cardiopathy * previous pelvic RT
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| complete pathological response (pCR) | 6 weeks | pCR is defined as ypT0N0 |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Acute toxicity | 6 months | Acute toxicity is evaluated using CTCAE criteria |
| Quality of Life (QoL) | 1 year | QoL is evaluated using EORTC QoL questionnaire |
| Late toxicity | 1 year | Late toxicity is evaluated using CTCAE criteria |
| Dosimetric advantage of GTV-boost reduction | 6 weeks | Dosimetric advantage is evaluated using DVHs (Dose Volume Histograms) |
| Evaluation of PET-response as predictive factor | 1 year | Correlation between SUV (Standardized Uptake Value) and pathological response |
Countries
Italy