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cancer (EC) and gastric cancer (GC) remained inconsistent and controversial, especially on variants other than rs2274223. The relationship between<jats:italic> PLCE1<\/jats:italic> polymorphisms and gene expression is also unclear. Here we conducted a case-control study from northwest China, genotyped seven tag single nucleotide polymorphisms (SNPs) in<jats:italic> PLCE1<\/jats:italic> with multiplexed SNP MassARRAY assay. Stratified analysis was carried out and<jats:italic> PLCE1<\/jats:italic> expression was evaluated in specified groups with the method of qRT-PCR and immunohistochemistry. Results showed that the minor alleles of rs3765524, rs2274223, and rs10509670 were associated with increased risk of EC and GC. Linkage disequilibrium analysis revealed protective haplotypes of CCAAGTC and CCAA. By stratification, a more significant association was found in subgroups of male, age \u2265 54, tumor stages of I-II and tumor size \u2264 5\u2009cm, EC and cardia cancer (CC) of stomach, and moderate to well differentiated squamous carcinoma. In addition, a significant association for rs3765524 with noncardia cancer (NCC) and adenocarcinoma which is predominant in China was also observed. Further expression analysis identified that<jats:italic> PLCE1<\/jats:italic> was downregulated in NCC tissues comparing to their adjacent noncancerous tissues, and its protein expression was higher in genotype rs3765524 CT\/TT than in rs3765524 CC. In summary, our study suggests that<jats:italic> PLCE1<\/jats:italic> polymorphisms may affect its gene expression and are associated with not only EC and CC, but also, to some extent, NCC risk in this study population.<\/jats:p>","DOI":"10.1155\/2019\/9765191","type":"journal-article","created":{"date-parts":[[2019,2,25]],"date-time":"2019-02-25T18:31:48Z","timestamp":1551119508000},"page":"1-10","source":"Crossref","is-referenced-by-count":9,"title":["<i>PLCE1<\/i> Polymorphisms and Risk of Esophageal and Gastric Cancer in a Northwestern Chinese Population"],"prefix":"10.1155","volume":"2019","author":[{"given":"Ping","family":"Liang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, School of Pharmacy, The Fourth Military Medical University, Xi\u2019an 710032, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wentao","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key 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