Postoperative Treatment With Docetaxel, Cisplatin, and Capecitabine (DCX) and Chemoradiotherapy (CRT) With Capecitabine for Resected Gastric Adenocarcinoma

Adjuvant chemoradiotherapy in gastric cancer: a pooled analysis of the AIRO gastrointestinal group experience

BACKGROUND

Given the poor compliance with adjuvant chemoradiotherapy (CRT) in gastric cancer reported in previous studies, a survey was conducted among 18 Italian institutions within the AIRO Gastrointestinal Group to investigate current treatment modalities, toxicities, and compliance with adjuvant CRT.

PATIENTS AND METHODS

Data from 348 patients operated on for gastric cancer were collected retrospectively from September 2000 to June 2008 and analyzed. The adjuvant treatments included CRT according to center guidelines. In multivariate analysis, acute hematological, gastrointestinal, and renal toxicity (according to the RTOG Acute Radiation Morbidity Scoring Criteria) and compliance with treatment were studied, as well as risk factors for local control, metastasis-free survival, disease-free survival, and overall survival.

RESULTS

Compliance with treatment was excellent: 95.7% of patients completed CRT. During CRT, acute G3-G4 ­hematological toxicity was 3.7% and acute G3-G4 gastrointestinal toxicity 4%. 78.4% of patients completed chemotherapy (CT), either before or after CRT. During CT acute G3-G4 hematological toxicity was 5.4% and acute G3-G4 gastrointestinal toxicity 6%. Overall, 74.1% of patients completed the prescribed treatment (CRT and CT). Doses greater than 4500 cGy did not compensate for more aggressive disease. The 5-year overall survival was 51%.

CONCLUSIONS

The adjuvant treatment of gastric cancer within the AIRO group was diverse, but radiotherapy treatment was homogeneous (in terms of technique) and well tolerated. Toxicity was low and compliance with treatment was good during CRT; these results may be due to the radiotherapy technique applied. This survey could be used as a benchmark for further studies.

Docetaxel, capecitabine and concurrent radiotherapy for gastric cancer patients with postoperative locoregional recurrence

AIMS AND BACKGROUND

This study aimed to assess the efficacy of concurrent chemoradiotherapy (CCRT) with docetaxel and capecitabine versus docetaxel and capecitabine chemotherapy for gastric cancer patients with postoperative locoregional recurrence.

METHODS

From 2008 to 2011, 81 patients with locoregional recurrence after curative resection of gastric cancer were enrolled. Thirty-nine (CCRT group) received involved-field radiotherapy with oral capecitabine (twice daily, 5 days/week) and intravenous infusion of docetaxel (once weekly). The remaining 42 patients (chemotherapy group) were treated with oral capecitabine (twice daily, days 1-14) followed by intravenous infusion of docetaxel (days 1 and 8). The overall response rate, overall symptom control rate, toxicity or adverse reactions, and overall survival (OS) were compared.

RESULTS

The overall response rate (CR+PR) was significantly higher in the CCRT group (79.5%) than the chemotherapy group (54.8%). In CCRT individuals, the control rates for bleeding, pain, and dysphagia/obstruction were 87.5%, 75%, and 71.4%, respectively, versus 63.2%, 50%, and 28.6% in the chemotherapy group. CCRT patients had a better symptom control rate than the chemotherapy group (52.5% vs. 80%). Adverse reactions were nonsignificantly more severe in CCRT patients. Finally, median OS was longer in the CCRT vs. chemotherapy group (14.2 vs. 6.4 months).

CONCLUSIONS

Involved-field radiotherapy with docetaxel and capecitabine was effective and well tolerated. These findings provide further insight into the role of CCRT in gastric cancer. However, this was not a randomized controlled study and the number of patients was relatively small, suggesting that cautious interpretation of cumulative estimates is warranted.