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Laparoscopic versus open gastrectomy for elderly local advanced gastric cancer patients: study protocol of a phase II randomized controlled trial.

ABSTRACT: BACKGROUND:Gastric cancer is one of the most common malignant tumors worldwide. With the rapid aging of global population, the number of elderly patients with local advanced gastric cancer is increasing. Surgery is the essential treatment for local advanced gastric cancer. However, elderly patients are at high risk of postoperative complications due to reduced functional reserve and increased comorbidities. Laparoscopic gastrectomy may be a promising surgery approach for elderly patients but its benefits remain controversial. We therefore proposed this randomized trial to evaluate the safety and efficacy of laparoscopic versus open gastrectomy for local advanced gastric cancer in patients aged 70 and above. METHODS:The current study has a randomized, parallel controlled, single-center, open-label, superiority design with two arms. A sample of 180 local advanced gastric cancer patients aged 70 and above will be recruited in Peking University Cancer Hospital and Institute. Participants will be randomized to either receive open or laparoscopic gastrectomy. The primary outcome is surgical safety, including complication rate, reoperation rate, readmission rate, and mortality rate within 30 days after surgery. The secondary endpoints include postoperative rehabilitation status, one-year postoperative life quality, three-year overall and disease-free survival. Assessments will take place at baseline (before random assignment), at 30 days, one-year, and three-year after the surgery. The study has been approved by an ethical review board. DISCUSSION:We hypothesized that laparoscopic gastrectomy is superior to open gastrectomy in terms of perioperative safety for local advanced gastric cancer patients aged 70 and above. If this hypothesis is statistically proved, the rational introduction of minimally invasive surgery technique in traditional gastrectomy can help improve the surgical safety for elderly patients, reduce patient financial burden, shorten hospital stay, and improve hospital beds turnover rate. Our research data will also provide high quality clinical evidence and data support for the conduction of multicenter phase III clinical trials. TRIAL REGISTRATION:The study has been prospectively registered in ClinicalTrial.gov ( NCT03564834 ).

SUBMITTER: Li Z

PROVIDER: S-EPMC6240197 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Laparoscopic versus open gastrectomy for elderly local advanced gastric cancer patients: study protocol of a phase II randomized controlled trial.

Li Ziyu Z Shan Fei F Ying Xiangji X Xue Kan K Ji Jiafu J

BMC cancer 20181116 1

<h4>Background</h4>Gastric cancer is one of the most common malignant tumors worldwide. With the rapid aging of global population, the number of elderly patients with local advanced gastric cancer is increasing. Surgery is the essential treatment for local advanced gastric cancer. However, elderly patients are at high risk of postoperative complications due to reduced functional reserve and increased comorbidities. Laparoscopic gastrectomy may be a promising surgery approach for elderly patients ...[more]

PMID: 30445943

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Project description:BACKGROUND:Compared with open gastrectomy (OG), laparoscopic gastrectomy (LG) for gastric cancer has achieved rapid development and popularities in the past decades. However, lack of comprehensive analysis in long-term oncological outcomes such as recurrence and mortality hinder its full support as a valid procedure. Therefore, there are still debates on whether one of these options is superior. AIM:To evaluate the primary and secondary outcomes of laparoscopic versus open gastrectomy for gastric cancer patients METHODS: Two authors independently extracted study data. Risk ratio (RR) with 95% confidence interval (CI) was calculated for binary outcomes, mean difference (MD) or the standardized mean difference (SMD) with 95% CI for continuous outcomes, and the hazard ratio (HR) for time-to-event outcomes. Review Manager 5.3 and STATA software were used for the meta-analysis. RESULTS:Seventeen randomized controlled trials (RCTs) involving 5204 participants were included in this meta-analysis. There were no differences in the primary outcomes including the number of lymph nodes harvested during operation, severe complications, short-term and long-term recurrence, and mortality. As for secondary outcomes, compared with the OG group, longer operative time was required for patients in the LG group (MD?=?58.80?min, 95% CI?=?[45.80, 71.81], P?<?0.001), but there were less intraoperative blood loss (MD?=?-?54.93?ml, 95% CI?=?[-?81.60, -?28.26], P?<?0.001), less analgesic administration (frequency: MD?=?-?1.73, 95% CI?=?[-?2.21, -?1.24], P?<?0.001; duration: MD?=?-?1.26?days, 95% CI?=?[-?1.40, -?1.12], P?<?0.001), shorter hospital stay (MD?=?-?1.37?days, 95% CI?=?[-?2.05, -?0.70], P?<?0.001), shorter time to first flatus (MD?=?-?0.58?days, 95% CI?=?[-?0.79, -?0.37], P?<?0.001), ambulation (MD?=?-?0.50?days, 95% CI?=?[-?0.90, -?0.09], P?=?0.02) and oral intake (MD?=?-?0.64?days, 95% CI?=?[-?1.24, -?0.03], P?<?0.04), and less total complications (RR?=?0.81, 95% CI?=?[0.71, 0.93], P?=?0.003) in the OG group. There was no difference in blood transfusions (number, quantity) between these two groups. Subgroup analysis, sensitivity analysis, and the adjustment of Duval's trim and fill methods for publication bias did not change the conclusions. CONCLUSION:LG was comparable to OG in the primary outcomes and had some advantages in secondary outcomes for gastric cancer patients. LG is superior to OG for gastric cancer patients.

Project description:To conduct a meta-analysis comparing laparoscopic (LGD2) and open D2 gastrectomies (OGD2) for the treatment of advanced gastric cancer (AGC).Randomized controlled trials (RCTs) and non-RCTs comparing LGD2 with OGD2 for AGC treatment, published between 1 January 2000 and 12 January 2013, were identified in the PubMed, Embase, and Cochrane Library databases. Primary endpoints included operative outcomes (operative time, intraoperative blood loss, and conversion rate), postoperative outcomes (postoperative analgesic consumption, time to first ambulation, time to first flatus, time to first oral intake, postoperative hospital stay length, postoperative morbidity, incidence of reoperation, and postoperative mortality), and oncologic outcomes (the number of lymph nodes harvested, tumor recurrence and metastasis, disease-free rates, and overall survival rates). The Cochrane Collaboration tools and the modified Newcastle-Ottawa scale were used to assess the quality and risk of bias of RCTs and non-RCTs in the study. Subgroup analyses were conducted to explore the incidence rate of various postoperative morbidities as well as recurrence and metastasis patterns. A Begg's test was used to evaluate the publication bias.One RCT and 13 non-RCTs totaling 2596 patients were included in the meta-analysis. LGD2 in comparison to OGD2 showed lower intraoperative blood loss [weighted mean difference (WMD) = -137.87 mL, 95%CI: -164.41--111.33; P < 0.01], lower analgesic consumption (WMD = -1.94, 95%CI: -2.50--1.38; P < 0.01), shorter times to first ambulation (WMD = -1.03 d, 95%CI: -1.90--0.16; P < 0.05), flatus (WMD = -0.98 d, 95%CI: -1.30--0.66; P < 0.01), and oral intake (WMD = -0.85 d, 95%CI: -1.67--0.03; P < 0.05), shorter hospitalization (WMD = -3.08 d, 95%CI: -4.38--1.78; P < 0.01), and lower postoperative morbidity (odds ratio = 0.78, 95%CI: 0.61-0.99; P < 0.05). No significant differences were observed between LGD2 and OGD2 for the following criteria: reoperation incidence, postoperative mortality, number of harvested lymph nodes, tumor recurrence/metastasis, or three- or five-year disease-free and overall survival rates. However, LGD2 had longer operative times (WMD = 57.06 min, 95%CI: 41.87-72.25; P < 0.01).Although a technically demanding and time-consuming procedure, LGD2 may be safe and effective, and offer some advantages over OGD2 for treatment of locally AGC.

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Laparoscopic versus open gastrectomy for elderly local advanced gastric cancer patients: study protocol of a phase II randomized controlled trial.

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Laparoscopic versus open gastrectomy for elderly local advanced gastric cancer patients: study protocol of a phase II randomized controlled trial.

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