Capecitabine-oxaliplatin (CAPOX) prior to chemoradiotherapy (CRT) and surgery in magnetic resonance imaging (MRI)-defined poor-risk rectal carcinoma (PRRC): A single center experience.

Authors

null

Carla Bellido Ribes

Medical Oncology Department, Hospital Provincial de Castellon, Castellon, Spain

Carla Bellido Ribes , Jorge Soler , Nuria Ruiz , Silvia Rubio Novella , Virginia Morillo , Jorge Molina , Isabel Busquier Hernandez

Organizations

Medical Oncology Department, Hospital Provincial de Castellon, Castellon, Spain, Medical Oncology Department, Hospital Provincial de Castellón, Castellón De La Plana, Spain, Radiation Oncology Department, Hospital Provincial de Castellón, Castellón, Spain

Research Funding

No funding received
None.

Background: Clinical trials have studied the efficacy and safety of neoadjuvant chemotherapy (CT) and CRT in PRRC. Chau published his data on PRRC studied with MRI: tumors within 1 mm of mesorectal fascia, T3 at or below levators, tumors extending > 5 mm into perirectal fat, T4 and T1-4N2 tumors (JCO 2006; 245: 668-674). Following this strategy, we present the data from our center. Methods: between February 2006- July 2018 we treated 77 PT with MRI-defined PRRC with CAPOX x 4 cycles, Capecitabine-radiotherapy, surgery and capecitabine 4 cycles (Chau strategy). Results: Our sample includes 43 men and 34 women, median age 59 (range 31-77). A patient died after the first CAPOX due to a hemorrhagic stroke. 69 PT had symptomatic improvement with CT, without identifying any progression. Surgery has performed in 75 PT and 65 had R0 resection, R1 in 6 patients, R2 in 2 patients and 2 lost. On an intent-to-treat analysis, pathological complete responses was achieved in 13 (pCR: 16,9%) of patients. The mean number of lymph nodes removed was 11. 51 patients (66,2%) started CT post-surgery. With a median follow up of 113 months [range 24-199],26 patient (33,8%) presented disease progression, 5 local and 21 distant recurrence. There were 14 deaths due to disease progression. 5-years OS was 87% (CI 95%: 79,4-94,6%) and DFS was 80,2 (CI 71-89,4%). Conclusions: Our data support the rutine use of CAPOX and following CRT prior to surgery on PT with PRRC, with promising results consistent with published trial data.

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Abstract Details

Meeting

2023 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only: Gastrointestinal Cancer—Colorectal and Anal

Track

Gastrointestinal Cancer—Colorectal and Anal

Sub Track

Colorectal Cancer–Local-Regional Disease

Citation

J Clin Oncol 41, 2023 (suppl 16; abstr e15638)

DOI

10.1200/JCO.2023.41.16_suppl.e15638

Abstract #

e15638

Abstract Disclosures

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