Rectal Cancer Clinical Trial
Official title:
Prospective Pilot Study of Therapeutic Targets (TT) Tailored Chemotherapy (Ch) and Intensity Modulated Radiotherapy (IMRT) as Neoadjuvant Treatment in Patients With Rectal Carcinoma
The parameter that best correlates with 5 years disease-free survival (DFS ) in patients (pts) with localized rectal cancer (RC) is the pathological TNM staging (ypTNM) after chemo-radiotherapy (Ch-RT). DFS is 97% in pts with ypT0N0M0 = ypCR and 42% in pts with ypN +. Standard 5-FU Ch-RT achieves 15% of ypCR. The use of IMRT achieves a high proportion of ypCR . This study aimed to demonstrate in a prospective manner the feasibility of personalizing Ch regimen base in TT in combination with IMRT in patients with RC. Secondary objectives included the number of ypCR and safety.
The parameter that best correlates with DFS in patients (pts) with localized rectal cancer
(RC) is the pathological TNM staging (ypTNM) after chemo-radiotherapy (Ch-RT).Tumor
regression grading (TRG) after Ch-RT has been correlated with DFS , 86% for TRG 4, 75% for
grouped TRG 2 + 3, and 63% for grouped TRG 0 + 1 but this is not as good as ypTNM to predict
pts outcome.
Standard 5-FU or capecitabine Ch-RT achieves 15% of ypCR with diarrhea and proctitis as the
main grade 3 toxicities in the range of 10-15% . With the combination of oxaliplatin and
capecitabine pCR rates are the same but the toxicity is the range of 25%. IMRT studies
reported 30% ypCR but with 30-40% grade 3 toxicities Last years strategies have explored
ways to integrate additional chemotherapeutic agents as capecitabine , oxaliplatin,
irinotecan, bevacizumab and cetuximab in Ch-RT regimens and to find biomarkers of their
effectiveness , but always in a retrospective way.
Our hypothesis is that with the actual knowledge and technology, a prospective tailored
chemotherapy selection in combination with IMRT is feasible and could improve the outcome of
patients with rectal cancer.
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Allocation: Non-Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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