{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T07:47:33Z","timestamp":1767772053212,"version":"3.37.3"},"reference-count":19,"publisher":"Cold Spring Harbor Laboratory","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Cold Spring Harb Mol Case Stud"],"published-print":{"date-parts":[[2018,8]]},"abstract":"<jats:p>Most truncating <jats:italic>cadherin 1<\/jats:italic> (<jats:italic>CDH1<\/jats:italic>) pathogenic alterations confer an elevated lifetime risk of diffuse gastric cancer (DGC) and lobular breast cancer (LBC). However, transcripts containing carboxy-terminal premature stop codons have been demonstrated to escape the nonsense-mediated mRNA decay pathway, and gastric and breast cancer risks associated with these truncations should be carefully evaluated. A female patient underwent multigene panel testing because of a personal history of invasive LBC diagnosed at age 54, which identified the germline <jats:italic>CDH1<\/jats:italic> nonsense alteration, c.2506G&gt;T (p.Glu836*), in the last exon of the gene. Subsequent parental testing for the alteration was negative and additional short tandem repeat analysis confirmed the familial relationships and the de novo occurrence in the proband. Based on the de novo occurrence, clinical history, and rarity in general population databases, this alteration was classified as a likely pathogenic variant. This is the most carboxy-terminal pathogenic alteration reported to date. Additionally, this alteration contributed to the classification of six other upstream <jats:italic>CDH1<\/jats:italic> carboxy-terminal truncating variants as pathogenic or likely pathogenic. Identifying the most distal pathogenic alteration provides evidence to classify other carboxy-terminal truncating variants as either pathogenic or benign, a fundamental step to offering presymptomatic screening and prophylactic procedures to the appropriate patients.<\/jats:p>","DOI":"10.1101\/mcs.a003012","type":"journal-article","created":{"date-parts":[[2018,5,24]],"date-time":"2018-05-24T21:10:27Z","timestamp":1527196227000},"page":"a003012","source":"Crossref","is-referenced-by-count":11,"title":["A novel de novo <i>CDH1<\/i> germline variant aids in the classification of carboxy-terminal E-cadherin alterations predicted to escape nonsense-mediated mRNA 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