{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T13:27:28Z","timestamp":1770989248051,"version":"3.50.1"},"reference-count":27,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2008,1,16]],"date-time":"2008-01-16T00:00:00Z","timestamp":1200441600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Cancer"],"published-print":{"date-parts":[[2008,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background<\/jats:title>\n            <jats:p>EGFR overexpression has been described in many human tumours including gastric cancer. In NSCLC patients somatic EGFR mutations, within the kinase domain of the protein, as well as gene amplification were associated with a good clinical response to EGFR inhibitors. In gastric tumours data concerning structural alterations of EGFR remains controversial. Given its possible therapeutic relevance, we aimed to determine the frequency and type of structural alterations of the <jats:italic>EGFR<\/jats:italic> gene in a series of primary gastric carcinomas.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>Direct sequencing of the kinase domain of the <jats:italic>EGFR<\/jats:italic> gene was performed in a series of 77 primary gastric carcinomas. FISH analysis was performed in 30 cases. Association studies between <jats:italic>EGFR<\/jats:italic> alterations and the clinical pathological features of the tumours were performed.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Within the 77 primary gastric carcinomas we found two <jats:italic>EGFR<\/jats:italic> somatic mutations and several <jats:italic>EGFR<\/jats:italic> polymorphisms in exon 20. Six different intronic sequence variants of <jats:italic>EGFR<\/jats:italic> were also found. Four gastric carcinomas showed balanced polysomy or <jats:italic>EGFR<\/jats:italic> gene amplification. We verified that gastric carcinoma with alterations of <jats:italic>EGFR<\/jats:italic> (somatic mutations or copy number variation) showed a significant increase of tumour size (<jats:italic>p<\/jats:italic> = 0.0094) in comparison to wild-type <jats:italic>EGFR<\/jats:italic> carcinomas.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>We demonstrate that <jats:italic>EGFR<\/jats:italic> structural alterations are rare in gastric carcinoma, but whenever present, it leads to tumour growth. We considered that searching for <jats:italic>EGFR<\/jats:italic> alterations in gastric cancer is likely to be clinically important in order to identify patients susceptible to respond to tyrosine kinase inhibitors.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1471-2407-8-10","type":"journal-article","created":{"date-parts":[[2008,1,16]],"date-time":"2008-01-16T19:13:50Z","timestamp":1200510830000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":40,"title":["Epidermal growth factor receptor structural alterations in gastric cancer"],"prefix":"10.1186","volume":"8","author":[{"given":"C\u00e1tia","family":"Moutinho","sequence":"first","affiliation":[]},{"given":"Ana R","family":"Mateus","sequence":"additional","affiliation":[]},{"given":"Fernanda","family":"Milanezi","sequence":"additional","affiliation":[]},{"given":"F\u00e1tima","family":"Carneiro","sequence":"additional","affiliation":[]},{"given":"Raquel","family":"Seruca","sequence":"additional","affiliation":[]},{"given":"Gianpaolo","family":"Suriano","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2008,1,16]]},"reference":[{"issue":"1","key":"948_CR1","doi-asserted-by":"publisher","first-page":"18","DOI":"10.1002\/(SICI)1097-0215(19990924)83:1<18::AID-IJC5>3.0.CO;2-M","volume":"83","author":"P Pisani","year":"1999","unstructured":"Pisani P, Parkin DM, Bray F, Ferlay J: Estimates of the worldwide mortality from 25 cancers in 1990. 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