Clinical trial NCT05181306: Long-term Oncologic Outcomes of Robotic Versus Laparoscopic Total Gastrectomy for Advanced Gastric Cancer
Official title: Long-term Oncologic Outcomes of Robotic Versus Laparoscopic Total Gastrectomy for Advanced Gastric Cancer: A Propensity Score Matching Study
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Gastric Cancer
Keywords: Advanced gastric cancer
Total gastrectomy
Robotic
Laparoscopic
Long-term outcomes
Lead sponsor: Southwest Hospital, China
Sponsor class: OTHER
First posted: 2022-01-06
Enrollment: 430
Sex: ALL
Minimum age (years): 18
Maximum age (years): 80
Standard ages: ADULT
OLDER_ADULT
Observational model: CASE_CONTROL
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients diagnosed with gastric cancer who need to received total gastrectomy with D2 lymphadenectomy.

Brief summary: This study is a retrospective, single-center, controlled and observation trial comparing robotic total gastrectomy with D2 lymph nodal dissection for locally advanced gastric cancer patients with laparoscopic procedure.

Detailed description: Since Kitano firstly reported laparoscopy-assisted distal gastrectomy in 1994, the number of patients undergoing the laparoscopic procedure has gradually increased. The latest Japanese gastric cancer treatment guideline recommends laparoscopic gastrectomy (LG) as an optional treatment for cStage（clinical stage） Ⅰ gastric cancer (GC).

Based on the experience of early GC, most experienced surgeons have applied the laparoscopic procedure in patients with locally advanced gastric cancer (AGC) especially in east world like China, Japan and Korea. Though applying laparoscopic total gastrectomy (LTG) is much more difficulty than that of distal gastrectomy (DG), there are a mount of centers reported their experiences of this procedure. A meta-analysis including seventeen studies of 2313 patients (955 in LTG and 1358 in open total gastrectomy) demonstrated that LTG can have less blood loss, fewer analgesic uses, earlier passage of flatus, quicker resumption of oral intake, earlier hospital discharge, and reduced postoperative morbidity. However, the number of harvested lymph nodes, proximal resection margin, hospital mortality, 5-year OS(overall survival) and DFS(disease-free survival) were similar in both groups. According to the existing reports, LTG is technically safety and feasibility.

To overcome the limitations of laparoscopic surgery, robot systems have been introduced to treat GC providing technical advantages since Hashizume firstly reported. Yoon and Son respectively compared robot total gastrectomy (RTG) with LTG, they drew a common conclusion that the number of dissected lymph nodes and postoperative complications were similar in both groups. But Son found that the mean numbers of retrieved lymph nodes along the splenic artery from RTG was higher than LTG (2.3 vs. 1.0, p = 0.013), as was also the case at the splenic hilum and artery (3.6 vs.1.9, p = 0.014). Regretfully, most of their reported cases were early gastric cancer (EGC). Other literatures reported AGC patients under RTG or LTG together with distal gastrectomy (DG), the investigators haven't found any literature compare RTG with LTG alone for AGC retrospectively.

Since most literatures are EGC patients and retrospectively researches, the investigators can't insist that patients with AGC may benefit under RTG. Therefore, the investigators launch this retrospective, single-center, controlled observation trial comparing RTG for locally advanced gastric cancer patients with LTG. In the process of research, it will be divided into two groups according to the willing of patients or their legal representatives who choose one of the two procedures(RTG or LTG) to cure GC.

Eligibility criteria: Inclusion Criteria:

* 1.Pathologically proven gastric adenocarcinoma; 2.Age: older than 18 years old, younger than 80 years old; 3.Tumor located in the upper third of the stomach or esophagogastric junction or other location, and is possible to be curatively resected by total gastrectomy; 4.Preoperative stage of cT2-4aN0-3M0 according to American Joint Committee on Cancer/Union for International Cancer Control 8th edition; 5.American Society of Anesthesiology (ASA) score of class I to III; 6.Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1; 7.Patients who freely give informed consent to participate in the clinical study;

Exclusion Criteria:

* 1.Early gastric cancer; 2.Age: younger than 18 years old, older than 80 years old; 3.Total gastrectomy with D2 lymphadenectomy was not required; 4.Enlarged or bulky regional lymph node diameter larger than 3 cm based on preoperative imaging; 5.Emergency surgery for gastric cancer-related complications (bleeding or complete obstruction or perforation); 6.Previous upper abdominal surgery (except laparoscopic cholecystectomy); 7.Previous neoadjuvant chemotherapy or radiotherapy for gastric cancer; 8.Unstable angina or myocardial infarction within the past 6 months; 9.Cerebrovascular accident within the past 6 months; 10.American Society of Anesthesiology (ASA) score of class more than III; 11.Severe respiratory disease (FEV1\< 50%); 12.Continuous systemic steroid therapy within 1 month before the study; 13.Pregnant or breast-feeding women;

Primary outcomes:
measure: 5-year Overall survival rate
timeFrame: 5 years
measure: 5-year Disease-free survival rate
timeFrame: 5 years
measure: Recurrence
timeFrame: 5 years
Secondary outcomes:
measure: Overall postoperative morbidity and mortality
timeFrame: 30 days
measure: Time of operation
timeFrame: 1 day
measure: Estimated blood loss
timeFrame: 1 day
measure: Blood transfusion
timeFrame: 1 day
measure: Length of proximal and distal cutting margin
timeFrame: 1 day
measure: Number of retrieved overall lymph nodes, N1 lymph nodes, N2 lymph nodes and supra-pancreatic lymph nodes
timeFrame: 7 days
measure: Time to flatus
timeFrame: 30 days
measure: Time to liquid diet
timeFrame: 30 days
measure: Time to soft diet
timeFrame: 30 days
measure: Duration of postoperative hospital stay
timeFrame: 30 days
measure: Cost
timeFrame: 30 days
Other outcomes:
Locations:
city: Chongqing
country: China
state: Chongqing
Study officials:
affiliation: Department of General Surgery and Center of Microinvasive Gastrointestinal Surgery,Southwest Hospital
name: Pei-wu Yu
role: STUDY_CHAIR
References:
citation: Japanese Gastric Cancer Association. Japanese gastric cancer treatment guidelines 2014 (ver. 4). Gastric Cancer. 2017 Jan;20(1):1-19. doi: 10.1007/s10120-016-0622-4. Epub 2016 Jun 24. No abstract available.
citation: Etoh T, Honda M, Kumamaru H, Miyata H, Yoshida K, Kodera Y, Kakeji Y, Inomata M, Konno H, Seto Y, Kitano S, Hiki N. Morbidity and mortality from a propensity score-matched, prospective cohort study of laparoscopic versus open total gastrectomy for gastric cancer: data from a nationwide web-based database. Surg Endosc. 2018 Jun;32(6):2766-2773. doi: 10.1007/s00464-017-5976-0. Epub 2017 Dec 7.
citation: Yoon HM, Kim YW, Lee JH, Ryu KW, Eom BW, Park JY, Choi IJ, Kim CG, Lee JY, Cho SJ, Rho JY. Robot-assisted total gastrectomy is comparable with laparoscopically assisted total gastrectomy for early gastric cancer. Surg Endosc. 2012 May;26(5):1377-81. doi: 10.1007/s00464-011-2043-0. Epub 2011 Nov 16.
citation: Son T, Lee JH, Kim YM, Kim HI, Noh SH, Hyung WJ. Robotic spleen-preserving total gastrectomy for gastric cancer: comparison with conventional laparoscopic procedure. Surg Endosc. 2014 Sep;28(9):2606-15. doi: 10.1007/s00464-014-3511-0. Epub 2014 Apr 3.
citation: Shen W, Xi H, Wei B, Cui J, Bian S, Zhang K, Wang N, Huang X, Chen L. Robotic versus laparoscopic gastrectomy for gastric cancer: comparison of short-term surgical outcomes. Surg Endosc. 2016 Feb;30(2):574-580. doi: 10.1007/s00464-015-4241-7. Epub 2015 Jul 25.
citation: Pan HF, Wang G, Liu J, Liu XX, Zhao K, Tang XF, Jiang ZW. Robotic Versus Laparoscopic Gastrectomy for Locally Advanced Gastric Cancer. Surg Laparosc Endosc Percutan Tech. 2017 Dec;27(6):428-433. doi: 10.1097/SLE.0000000000000469.
citation: Junfeng Z, Yan S, Bo T, Yingxue H, Dongzhu Z, Yongliang Z, Feng Q, Peiwu Y. Robotic gastrectomy versus laparoscopic gastrectomy for gastric cancer: comparison of surgical performance and short-term outcomes. Surg Endosc. 2014 Jun;28(6):1779-87. doi: 10.1007/s00464-013-3385-6. Epub 2014 Jan 3.
citation: Wang W, Zhang X, Shen C, Zhi X, Wang B, Xu Z. Laparoscopic versus open total gastrectomy for gastric cancer: an updated meta-analysis. PLoS One. 2014 Feb 18;9(2):e88753. doi: 10.1371/journal.pone.0088753. eCollection 2014.