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Letter
Genetic variant PLCE1 rs2274223 and gastric cancer: more to be explored?
  1. Yazhou He1,2,
  2. Chengdi Wang2,
  3. Ziqiang Wang1,
  4. Zongguang Zhou1
  1. 1 Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
  2. 2 West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
  1. Correspondence to Professor Ziqiang Wang, Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China; Wangzqzyh{at}126.com

https://doi.org/10.1136/gutjnl-2015-309968

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    We read with great interest the comprehensive study by Mocellin and colleagues1 who developed a quantitative summary of candidate genetic variants for gastric cancer susceptibility. Based on different tumour sites, the authors conducted a subgroup analysis for cardia cancer (CC) and non-cardia cancer (NCC). It is well established that CC has distinctive characteristics compared with NCC, but shares some common risk factors and pathogenesis with oesophageal cancer (OSC). In addition, there are some different genetic factors such as genetic variants between patients with CC and NCC. There is an argument that CC, located at oesophago-gastric junction, belongs to oesophageal more than gastric cancer.

    According to the results of subgroup analysis, Mocellin and colleagues1 found several variants showing different results with CC and NCC risk. However, only PLCE1 rs2274223 was reported to be significantly associated with CC but not NCC risk with high credibility …

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    Footnotes

    • YH and CW contributed equally.

    • Contributors YH and CW: contributed equally to conduct this study and wrote the manuscript. ZW: designed this letter and reviewed the manuscript. ZZ: reviewed the manuscript.

    • Competing interests None declared.

    • Provenance and peer review Not commissioned; internally peer reviewed.