Mutation spectrum in South American Lynch syndrome families

被引:27
作者
Dominguez-Valentin, Mev [1 ,2 ]
Nilbert, Mef [2 ]
Wernhoff, Patrik [3 ]
Lopez-Koestner, Francisco [4 ]
Vaccaro, Carlos [5 ]
Sarroca, Carlos [6 ]
Palmero, Edenir Ines [7 ]
Giraldo, Alejandro [8 ]
Ashton-Prolla, Patricia [9 ]
Alvarez, Karin [4 ]
Ferro, Alejandra [5 ]
Neffa, Florencia [6 ]
Caris, Junea [7 ]
Carraro, Dirce M. [10 ]
Rossi, Benedito M. [11 ]
机构
[1] Univ Copenhagen, Hvidovre Hosp, Clin Res Ctr, Danish HNPCC Register, DK-2650 Hvidovre, Denmark
[2] Lund Univ, Inst Clin Sci, Dept Oncol, Lund, Sweden
[3] Lund Univ, Lund Transgen Core Facil Reprod Immunol, Unit Muscle Biol, Dept Expt Med Sci, Lund, Sweden
[4] Clin Los Condes, Mol Lab, Santiago, Chile
[5] Hosp Italiano Buenos Aires, Hereditary Canc Program, Buenos Aires, DF, Argentina
[6] Colaborat Uruguay Invest Afecc Oncol Hereditarias, Hosp Fuerzas Armadas, Montevideo, Uruguay
[7] Barretos Canc Hosp, Dept Oncogenet, Barretos, Brazil
[8] Univ Sinu, Fac Med, Monteria, Colombia
[9] Hosp Clin, Dept Genet UFRGS, Porto Alegre, RS, Brazil
[10] AC Camargo Hosp, Lab Genom & Mol Biol, Dept Mol Oncogenet, Sao Paulo, Brazil
[11] Hosp Sirio Libanes, Sao Paulo, Brazil
关键词
Lynch syndrome; MLH1; MSH2; South America; Mutation; NONPOLYPOSIS COLORECTAL-CANCER; BRAZILIAN FAMILIES; GERMLINE MUTATIONS; MISSENSE VARIANTS; MSH2; MUTATIONS; MLH1; HNPCC; GENE; MMR; CLASSIFICATION;
D O I
10.1186/1897-4287-11-18
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background: Genetic counselling and testing for Lynch syndrome have recently been introduced in several South American countries, though yet not available in the public health care system. Methods: We compiled data from publications and hereditary cancer registries to characterize the Lynch syndrome mutation spectrum in South America. In total, data from 267 families that fulfilled the Amsterdam criteria and/or the Bethesda guidelines from Argentina, Brazil, Chile, Colombia and Uruguay were included. Results: Disease-predisposing mutations were identified in 37% of the families and affected MLH1 in 60% and MSH2 in 40%. Half of the mutations have not previously been reported and potential founder effects were identified in Brazil and in Colombia. Conclusion: The South American Lynch syndrome mutation spectrum includes multiple new mutations, identifies potential founder effects and is useful for future development of genetic testing in this continent.
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页数:9
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