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This study aimed to evaluate the degree of gastric atrophy (GA) and intestinal metaplasia (IM) in five locations to detect a more representative biopsy sample in gastric cancer (GC) screening. Our study enrolled 368 patients and 5 biopsy pieces were acquired from them. Gastric risk stratification was calculated by OLGA and OLGIM staging system. The results revealed that the IM score in the incisura angularis was higher than that in the larger and lesser curvature of corpus mucosa (<jats:italic>p<\/jats:italic>\u2009=\u20090.037 and<jats:italic>p<\/jats:italic>\u2009=\u20090.030, respectively) and the IM score in the lesser curvature of antrum mucosa was higher than that in the incisura angularis mucosa (<jats:italic>p<\/jats:italic>\u2009=\u20090.018). IM is more frequently observed in the angulus region than in the lesser curvature of corpus in the mild degree (<jats:italic>p<\/jats:italic>\u2009=\u20090.004) and mild IM lesions in the lesser curvature of antrum were more frequently observed than in the incisura angularis mucosa (<jats:italic>p<\/jats:italic>\u2009=\u20090.004), Four biopsy pieces protocol (larger curvature and lesser curvature of the antrum, lesser curvature of the corpus and angulus) demonstrated accurate consistency (97.83% and 98.37%, respectively) with a Kendall\u2019s tau-b of higher than 0.990, along with low misdiagnosis rates of OLGA and OLGIM (III\u2009+\u2009IV) (9.76% and 5.00%, respectively). Three biopsy pieces protocol (lesser curvature of the antrum and corpus, angulus biopsy) in OLGA and OLGIM staging system was close to the standard protocol (five biopsy specimens) with a consistency of 94.84% and 94.29% and has a Kendall\u2019s tau-b higher than 0.950 and diagnostic omission rates of 9.76% and 5.00%, respectively, which was exactly the same with the four biopsy pieces protocol. Furthermore, it had the second-highest Youden index (0.902 and 0.950, respectively) and area under the ROC curve (0.992 and 0.996, respectively) for the screening of high-risk GC by OLGA and OLGIM stages. Thus, we recommended the angulus and the lesser curvature of antrum as a conventional biopsy and three biopsy pieces for further GC risk screening.<\/jats:p>","DOI":"10.1038\/s41598-019-51487-0","type":"journal-article","created":{"date-parts":[[2019,10,17]],"date-time":"2019-10-17T11:30:47Z","timestamp":1571311847000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Biopsy strategies for endoscopic screening of pre-malignant gastric lesions"],"prefix":"10.1038","volume":"9","author":[{"given":"Meng","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shan","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yue","family":"Hu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hai-biao","family":"Bao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li-na","family":"Meng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao-teng","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yi","family":"Xu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bin","family":"Lu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,10,17]]},"reference":[{"key":"51487_CR1","first-page":"945","volume":"134","author":"AC de Vries","year":"2008","unstructured":"de Vries, A. 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