Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/50121

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dc.contributor.authorRossi, Benedito Mauropor
dc.contributor.authorPalmero, Edenir Inêzpor
dc.contributor.authorLópez-Kostner, Franciscopor
dc.contributor.authorSarroca, Carlospor
dc.contributor.authorVaccaro, Carlos Albertopor
dc.contributor.authorSpirandelli, Florenciapor
dc.contributor.authorAshton-Prolla, Patriciapor
dc.contributor.authorRodriguez, Yennipor
dc.contributor.authorGalvão, Henrique de Campos Reispor
dc.contributor.authorReis, R. M.por
dc.contributor.otheret. al.-
dc.date.accessioned2018-02-06T17:24:59Z-
dc.date.available2018-02-06T17:24:59Z-
dc.date.issued2017-
dc.identifier.citationRossi, B. M., Palmero, E. I., López-Kostner, F., Sarroca, C., et. al. (2017). A survey of the clinicopathological and molecular characteristics of patients with suspected Lynch syndrome in Latin America. BMC cancer, 17(1), 623.por
dc.identifier.issn1471-2407-
dc.identifier.urihttp://hdl.handle.net/1822/50121-
dc.description.abstractBackground: Genetic counselling and testing for Lynch syndrome (LS) have recently been introduced in several Latin America countries. We aimed to characterize the clinical, molecular and mismatch repair (MMR) variants spectrum of patients with suspected LS in Latin America. Methods: Eleven LS hereditary cancer registries and 34 published LS databases were used to identify unrelated families that fulfilled the Amsterdam II (AMSII) criteria and/or the Bethesda guidelines or suggestive of a dominant colorectal (CRC) inheritance syndrome. Results: We performed a thorough investigation of 15 countries and identified 6 countries where germline genetic testing for LS is available and 3 countries where tumor testing is used in the LS diagnosis. The spectrum of pathogenic MMR variants included MLH1 up to 54%, MSH2 up to 43%, MSH6 up to 10%, PMS2 up to 3% and EPCAM up to 0.8%. The Latin America MMR spectrum is broad with a total of 220 different variants which 80% were private and 20% were recurrent. Frequent regions included exons 11 of MLH1 (15%), exon 3 and 7 of MSH2 (17 and 15%, respectively), exon 4 of MSH6 (65%), exons 11 and 13 of PMS2 (31% and 23%, respectively). Sixteen international founder variants in MLH1, MSH2 and MSH6 were identified and 41 (19%) variants have not previously been reported, thus representing novel genetic variants in the MMR genes. The AMSII criteria was the most used clinical criteria to identify pathogenic MMR carriers although microsatellite instability, immunohistochemistry and family history are still the primary methods in several countries where no genetic testing for LS is available yet. Conclusion: The Latin America LS pathogenic MMR variants spectrum included new variants, frequently altered genetic regions and potential founder effects, emphasizing the relevance implementing Lynch syndrome genetic testing and counseling in all of Latin America countries.por
dc.description.sponsorshipRadium Hospital Foundation (Oslo, Norway) in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript, Helse Sør-Øst (Norway) in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript, the French Association Recherche contre le Cancer (ARC) in the analysis, and interpretation of data, the Groupement des Entreprises Françaises dans la Lutte contre le Cancer (Gefluc) in the analysis, and interpretation of data, the Association Nationale de la Recherche et de la Technologie (ANRT, CIFRE PhD fellowship to H.T.) in the analysis, and interpretation of data and by the OpenHealth Institute in the analysis, and interpretation of data. Barretos Cancer Hospital received financial support by FINEP-CT-INFRA (02/2010)por
dc.language.isoengpor
dc.publisherBioMed Central (BMC)por
dc.rightsopenAccesspor
dc.subjectLynch syndromepor
dc.subjectMmrpor
dc.subjectLatin Americapor
dc.subjectVariantspor
dc.titleA survey of the clinicopathological and molecular characteristics of patients with suspected Lynch syndrome in Latin Americapor
dc.typearticlepor
dc.peerreviewedyespor
dc.relation.publisherversionhttps://bmccancer.biomedcentral.com/articles/10.1186/s12885-017-3599-4por
oaire.citationIssue623por
oaire.citationVolume17por
dc.date.updated2018-01-15T11:52:00Z-
dc.identifier.doi10.1186/s12885-017-3599-4por
dc.identifier.pmid28874130por
dc.subject.fosCiências Médicas::Medicina Básicapor
dc.description.publicationversioninfo:eu-repo/semantics/publishedVersionpor
dc.subject.wosScience & Technologypor
sdum.journalBMC Cancerpor
Appears in Collections:ICVS - Artigos em Revistas Internacionais com Referee

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