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Long-Term Outcomes of Laparoscopic Distal Gastrectomy for Locally Advanced Gastric Cancer: The KLASS-02-RCT Randomized Clinical Trial

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dc.contributor.authorHyung, WJ-
dc.contributor.authorYang, HK-
dc.contributor.authorPark, YK-
dc.contributor.authorLee, HJ-
dc.contributor.authorAn, JY-
dc.contributor.authorKim, W-
dc.contributor.authorKim, HI-
dc.contributor.authorKim, HH-
dc.contributor.authorRyu, SW-
dc.contributor.authorHur, H-
dc.contributor.authorKim, MC-
dc.contributor.authorKong, SH-
dc.contributor.authorCho, GS-
dc.contributor.authorKim, JJ-
dc.contributor.authorPark, DJ-
dc.contributor.authorRyu, KW-
dc.contributor.authorKim, YW-
dc.contributor.authorKim, JW-
dc.contributor.authorLee, JH-
dc.contributor.authorHan, SU-
dc.contributor.authorKorean Laparoendoscopic Gastrointestinal Surgery Study Group-
dc.date.accessioned2022-11-11T04:09:30Z-
dc.date.available2022-11-11T04:09:30Z-
dc.date.issued2020-
dc.identifier.issn0732-183X-
dc.identifier.urihttp://repository.ajou.ac.kr/handle/201003/22527-
dc.description.abstractPURPOSE: It is unclear whether laparoscopic distal gastrectomy for locally advanced gastric cancer is oncologically equivalent to open distal gastrectomy. The noninferiority of laparoscopic subtotal gastrectomy with D2 lymphadenectomy for locally advanced gastric cancer compared with open surgery in terms of 3-year relapse-free survival rate was evaluated. PATIENTS AND METHODS: A phase III, open-label, randomized controlled trial was conducted for patients with histologically proven locally advanced gastric adenocarcinoma suitable for distal subtotal gastrectomy. The primary end point was the 3-year relapse-free survival rate; the upper limit of the hazard ratio (HR) for noninferiority was 1.43 between the laparoscopic and open distal gastrectomy groups. RESULTS: From November 2011 to April 2015, 1,050 patients were randomly assigned to laparoscopy (n = 524) or open surgery (n = 526). After exclusions, 492 patients underwent laparoscopic surgery and 482 underwent open surgery and were included in the analysis. The laparoscopy group, compared with the open surgery group, suffered fewer early complications (15.7% v 23.4%, respectively; P = .0027) and late complications (4.7% v 9.5%, respectively; P = .0038), particularly intestinal obstruction (2.0% v 4.4%, respectively; P = .0447). The 3-year relapse-free survival rate was 80.3% (95% CI, 76.0% to 85.0%) for the laparoscopy group and 81.3% (95% CI, 77.0% to 85.0%; log-rank P = .726) for the open group. Cox regression analysis after stratification by the surgeon revealed an HR of 1.035 (95% CI, 0.762 to 1.406; log-rank P = .827; P for noninferiority = .039). When stratified by pathologic stage, the HR was 1.020 (95% CI, 0.751 to 1.385; log-rank P = .900; P for noninferiority = .030). CONCLUSION: Laparoscopic distal gastrectomy with D2 lymphadenectomy was comparable to open surgery in terms of relapse-free survival for patients with locally advanced gastric cancer. Laparoscopic distal gastrectomy with D2 lymphadenectomy could be a potential standard treatment option for locally advanced gastric cancer.-
dc.language.isoen-
dc.subject.MESHAdenocarcinoma-
dc.subject.MESHFemale-
dc.subject.MESHGastrectomy-
dc.subject.MESHHumans-
dc.subject.MESHKaplan-Meier Estimate-
dc.subject.MESHLaparoscopy-
dc.subject.MESHLymph Node Excision-
dc.subject.MESHLymph Nodes-
dc.subject.MESHMale-
dc.subject.MESHMiddle Aged-
dc.subject.MESHNeoplasm Staging-
dc.subject.MESHProgression-Free Survival-
dc.subject.MESHStomach Neoplasms-
dc.subject.MESHTreatment Outcome-
dc.titleLong-Term Outcomes of Laparoscopic Distal Gastrectomy for Locally Advanced Gastric Cancer: The KLASS-02-RCT Randomized Clinical Trial-
dc.typeArticle-
dc.identifier.pmid32816629-
dc.contributor.affiliatedAuthorHur, H-
dc.contributor.affiliatedAuthorHan, SU-
dc.type.localJournal Papers-
dc.identifier.doi10.1200/JCO.20.01210-
dc.citation.titleJournal of clinical oncology-
dc.citation.volume38-
dc.citation.number28-
dc.citation.date2020-
dc.citation.startPage3304-
dc.citation.endPage3313-
dc.identifier.bibliographicCitationJournal of clinical oncology, 38(28). : 3304-3313, 2020-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.identifier.eissn1527-7755-
dc.relation.journalidJ00732183X-
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Journal Papers > School of Medicine / Graduate School of Medicine > Surgery
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