Evidence map›Paper›PMID 28639136›Full record

ArticleGastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association2018

Long-term oncologic outcomes of robotic gastrectomy for gastric cancer compared with laparoscopic gastrectomy.

Kazutaka Obama, Yoo-Min Kim, Dae Ryong Kang, Taeil Son, Hyoung-Il Kim, Sung Hoon Noh, Woo Jin Hyung

Registry-linked trialOpen access · bronzeAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03273920 (Robotic Versus Laparoscopic Distal Gastrectomy With D2 Lymphadenectomy for Locally Advanced Gastric Cancer), which is not on this map. Cited by 86 papers, 14 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed, 14 pooled it
10.6field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03273920 naunknown statusnot on this map

Robotic Versus Laparoscopic Distal Gastrectomy With D2 Lymphadenectomy for Locally Advanced Gastric Cancer: a Multicenter Randomized Controlled Trial

TypeinterventionalSponsorSouthwest Hospital, ChinaRan2017 to 2022Enrolled1,110ConditionsGastric CancerArmsRobotic distal gastrectomy with D2 nodal dissection, Laparoscopic distal gastrectomy with D2 nodal dissection
3 · Its place in the literature

Who cites it

86 citing papers in PubMed, 14 syntheses or guidelines pooled it, 139 citations in OpenAlex.

  1. Pooled it
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  6. A systematic review on the effectiveness of robot-assisted minimally invasive gastrectomy.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2024
    Pooled it
  7. Establishing the Learning Curve of Laparoscopic and Robotic Distal Gastrectomy: a Systematic Review and Meta-Regression Analysis.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2023
    Pooled it
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  9. Robotic gastrectomy for gastric cancer: systematic review and future directions.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2023
    Pooled it
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  15. Trial
  16. Article
  17. Comparison of oncological outcomes between robotic and laparoscopic surgeries for gastric cancer: a multi-institutional cohort study in Japan.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2026
    Article
  18. Article
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  20. Predictive Factors for Infectious Complications after Robotic Gastrectomy for Gastric or Esophagogastric Junction Cancer.European surgical research. Europaische chirurgische Forschung. Recherches chirurgicales europeennes · 2026
    Observational

26 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Kazutaka ObamaDepartment of Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Yoo-Min KimDepartment of Surgery, Graduate School, Yonsei University College of Medicine, Seoul, Korea.
Dae Ryong KangOffice of Biostatistics, Ajou University School of Medicine, Suwon, Korea.
Taeil SonDepartment of Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Hyoung-Il KimDepartment of Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Sung Hoon NohDepartment of Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 120-752, Republic of Korea.
Woo Jin HyungDepartment of Surgery, Yonsei University College of Medicine, 50-1 Yonsei-ro Seodaemun-gu, Seoul, 120-752, Republic of Korea. wjhyung@yuhs.ac.ORCID http://orcid.org/0000-0002-8593-9214
Yonsei University · KRAjou University · KR

Funding

Ministry of Health and Welfare 1320270
6 · The paper itself

Abstract

backgroundInitial experiences with robotic gastrectomy (RG) for gastric cancer have demonstrated favorable short-term outcomes, suggesting that RG is an effective alternative to laparoscopic gastrectomy (LG). However, data on long-term survival and recurrence after RG for gastric cancer have yet to be reported. The objective of this study was to assess long-term outcomes after RG compared with LG.

methodsWe retrospectively evaluated 313 and 524 patients who underwent RG or LG, respectively, for gastric cancer between July 2005 and December 2009. We compared long-term outcomes using the entire and a propensity-score matched cohort.

resultsThe entire cohort analysis revealed no statistically significant differences in 5-year overall survival(OS) or relapse-free survival(RFS) (p = 0.4112 and p = 0.8733, respectively): 93.3% [95% confidence interval (CI) 89.9-95.6] and 90.7% (95% CI, 86.9-93.5) after RG and 91.6% (95% CI 88.9-93.7) and 90.5% (95% CI 87.6-92.7) after LG, respectively; hazard ratios for death and recurrence in the robotic group were 0.828 (95% CI, 0.528-1.299; p = 0.4119) and 0.968 (95% CI, 0.649-1.445; p = 0.8741), respectively. The propensity-matched cohort analysis demonstrated no statistically significant differences for 5-year OS or RFS (p = 0.5207 and p = 0.2293, respectively): 93.2% and 90.7% after RG and 94.2% and 92.6% after LG, respectively; hazard ratios for death and recurrence in the robotic group were 1.194 (95% CI, 0.695-2.062; p = 0.5214) and 1.343 (95% CI, 0.830-2.192; p = 0.2321), respectively.

conclusionThe potential technical superiority of robotic system over laparoscopy did not improve oncological outcomes after gastrectomy. Long-term oncological outcomes were not different between RG and LG. Nevertheless, robotic applications in minimally invasive gastric cancer surgery may be an oncologically safe alternative.

Indexed as

AdenocarcinomaAdultAgedAged, 80 and overCohort StudiesFemaleGastrectomyHumansKaplan-Meier EstimateLaparoscopyMaleMiddle AgedProportional Hazards ModelsRetrospective StudiesRobotic Surgical ProceduresStomach NeoplasmsGastric cancerLaparoscopic gastrectomyLong-term outcomeRobotic gastrectomy

Identifiers

PMID28639136
OpenAlexW2644131481

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.