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Clinical Trial Summary

The main purpose of this study is to evaluate the effect of extensive lymphadenectomy procedure in treatment of gastric cancer. This study is designed as a open-label, multi-centers, randomized controlled trial. The overall survival and free disease survival are primary outcomes, with postoperative complication, hospital charges, and life quality as secondary outcomes.


Clinical Trial Description

Background: Gastric cancer is the second leading cause of cancer-associated death worldwide, with high incidence in China. The prognosis of advanced gastric cancer is quite poor. Although perioperative chemotherapy may help to prolong survival in cases of advanced disease, radical tumor resection remains the most effective treatment for curable gastric cancer. Nowadays, radical gastrectomy with extended (D2) lymphadenectomy has become the standard for treatment of advanced gastric cancer. However, this surgical procedure cannot achieve a radical tumor resection for most cases with advanced disease. Hence, a more extensive (D2 plus para-aortic nodal dissection, D4) lymphadenectomy along with gastrectomy has been performed in Japan and other Asian countries. A recent study by Sasako et al. indicated that a prophylactic D4 lymphadenectomy did not improve the prognosis of curable gastric cancer, but increased the blood loss and operation time compared with single D2 procedure. We reviewed our database, which had collected almost 2,000 gastric cancer cases since its establishment in 1994, and found that the D4 surgical procedure actually improved the prognosis of T4 tumor and tumor with lymph node metastasis at the second stations. To further confirm the results from our retrospective analysis, we performed a prospective study with multicenter, open-label, and randomized design in the affiliated hospitals of Sun Yat-sen University. This study would be helpful to improve the prognosis of patients with advanced gastric cancer, and find more efficient management for curable gastric cancer.

Method: This study, which started from January, 2011 and planned to close after ten years, has been approved by the ethic committee of Sun Yat-sen University, with written inform consent obtained from all enrolled subjects. Patients who had histologically proven gastric adenocarcinoma and confirmed lymph node metastasis to para-aortic nodes (<3 enlarged lymph nodes) were prospectively enrolled in this trial. A standard D2 lymphadenectomy or D4 procedure was randomly decided by a formal randomization program. The primary end point of this study was overall survival, defined as the time from randomization to death. The secondary end points were recurrence-free survival, postoperative complications, length of stay, and hospital charges. Recurrence-free survival was defined as the time from randomization to the first recurrence of cancer or death from any cause. The follow-up period would last for at least five years after the definitive operation.

Significance: This study would further confirm the efficacy of D2 plus para-aortic nodal dissection(PAND) procedure for management of advanced gastric cancer as compared with the classic D2 lymphadenectomy operation. Moreover, the therapeutic measures employed in current study may guide the future treatment of advanced gastric cancer in China. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment


Related Conditions & MeSH terms


NCT number NCT02423278
Study type Interventional
Source First Affiliated Hospital, Sun Yat-Sen University
Contact Yujie Yuan, MD
Phone +8615018492852
Email condor.yyj@gmail.com
Status Recruiting
Phase Phase 2/Phase 3
Start date January 2010
Completion date December 2020

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