Colorectal cancer(CRC)is one of the most frequent neoplasms and an important cause of mortality in the developed world.This cancer is caused by both genetic and environmental factors although 35%of the variation in CR...Colorectal cancer(CRC)is one of the most frequent neoplasms and an important cause of mortality in the developed world.This cancer is caused by both genetic and environmental factors although 35%of the variation in CRC susceptibility involves inherited genetic differences.Mendelian syndromes account for about5%of the total burden of CRC,with Lynch syndrome and familial adenomatous polyposis the most common forms.Excluding hereditary forms,there is an important fraction of CRC cases that present familial aggregation for the disease with an unknown germline genetic cause.CRC can be also considered as a complex disease taking into account the common diseasecommom variant hypothesis with a polygenic model of inheritance where the genetic components of common complex diseases correspond mostly to variants of low/moderate effect.So far,30 common,low-penetrance susceptibility variants have been identified for CRC.Recently,new sequencing technologies including exomeand whole-genome sequencing have permitted to add a new approach to facilitate the identification of new genes responsible for human disease predisposition.By using whole-genome sequencing,germline mutations in the POLE and POLD1 genes have been found to be responsible for a new form of CRC genetic predisposition called polymerase proofreading-associated polyposis.展开更多
Colorectal cancer （CRC） is one of the most common neoplasms and an important cause of mortality worldwide （http：//globocan. iarc.fr]）. Approximately 35% of the variation in CRC susceptibility is likely due to her...Colorectal cancer （CRC） is one of the most common neoplasms and an important cause of mortality worldwide （http：//globocan. iarc.fr]）. Approximately 35% of the variation in CRC susceptibility is likely due to heritable factors （Lichtenstein et al., 2000}. Genetic variations in the human genome include single nucleotide variants （SNVs）, short insertions and deletions, and larger structural variants resulting in gain or loss of genomic DNA larger than 1 kb, such as copy number variants （CNVs）. Leaving aside the importance of CNVs in sporadic tumor development, these variants can also be present in the germline DNA of healthy individuals from the general population and be considered polymorphic.展开更多
基金Supported by SCB is supported by a contract from the Fondo de Investigación Sanitaria,No.CP 03-0070CEJ and JM are supported by a contract from CIBERehd+7 种基金CIBERehd and CIB-ERER are funded by the Instituto de Salud Carlos IIIFondo de Investigación Sanitaria/FEDER,No.11/00219 and No.11/00681Instituto de Salud Carlos III(Acción Transversal de Cáncer),Xunta de Galicia,No.07PXIB9101209PRMinisterio de Cien-cia e Innovación,No.SAF2010-19273Asociación Espaola contra el Cáncer(Fundación Científica GCB13131592CAST y Junta de Barcelona)FundacióOlga Torres(SCB and CRP)FP7 CHIBCHA Consortium(SCB and ACar)COST Action BM1206(SCB and CRP)
文摘Colorectal cancer(CRC)is one of the most frequent neoplasms and an important cause of mortality in the developed world.This cancer is caused by both genetic and environmental factors although 35%of the variation in CRC susceptibility involves inherited genetic differences.Mendelian syndromes account for about5%of the total burden of CRC,with Lynch syndrome and familial adenomatous polyposis the most common forms.Excluding hereditary forms,there is an important fraction of CRC cases that present familial aggregation for the disease with an unknown germline genetic cause.CRC can be also considered as a complex disease taking into account the common diseasecommom variant hypothesis with a polygenic model of inheritance where the genetic components of common complex diseases correspond mostly to variants of low/moderate effect.So far,30 common,low-penetrance susceptibility variants have been identified for CRC.Recently,new sequencing technologies including exomeand whole-genome sequencing have permitted to add a new approach to facilitate the identification of new genes responsible for human disease predisposition.By using whole-genome sequencing,germline mutations in the POLE and POLD1 genes have been found to be responsible for a new form of CRC genetic predisposition called polymerase proofreading-associated polyposis.
基金supported by CIBEREHD (to SFE, CEJ and JM)CIBERER+7 种基金Fondo de Investigación Sanitaria/FEDER (14/00173, 14/ 00230 and 17/00878)Ministerio de Economía y Competitividad (SAF2014-54453-R)Fundación Científica de la Asociación Espanola contra el Cáncer (GCB13131592CAST)PERIS (SLT002/16/ 00398, Generalitat de Catalunya)COST Action BM1206Beca Grupo de Trabajo “Oncología” AEG (Asociación Espanola de Gastroenterología)CERCA Programme (Generalitat de Catalunya)Agència de Gestió d'Ajuts Universitaris i de Recerca (Generalitat de Catalunya, FI 2017 B00619 to MDG, 2014SGR255, 2014SGR135)
文摘Colorectal cancer （CRC） is one of the most common neoplasms and an important cause of mortality worldwide （http：//globocan. iarc.fr]）. Approximately 35% of the variation in CRC susceptibility is likely due to heritable factors （Lichtenstein et al., 2000}. Genetic variations in the human genome include single nucleotide variants （SNVs）, short insertions and deletions, and larger structural variants resulting in gain or loss of genomic DNA larger than 1 kb, such as copy number variants （CNVs）. Leaving aside the importance of CNVs in sporadic tumor development, these variants can also be present in the germline DNA of healthy individuals from the general population and be considered polymorphic.
