Unknown

Dataset Information

0

MUTYH-associated polyposis (MAP): evidence for the origin of the common European mutations p.Tyr179Cys and p.Gly396Asp by founder events.


ABSTRACT: MUTYH-associated polyposis (MAP) is an autosomal recessive adenomatous polyposis caused by biallelic germline mutations of the base-excision-repair gene MUTYH. In MAP patients of European origin, the combined allele frequency of the mutations p.Tyr179Cys and p.Gly396Asp ranges between 50 and 82%, while these mutations have not been identified in Far Eastern Asian populations, supporting the hypothesis that a founder effect has occurred at some point in European history. To investigate the natural history of the two common European MUTYH alleles, we genotyped six gene-flanking microsatellite markers in 80 unrelated Italian and German MAP patients segregating one or both mutations and calculated their age in generations (g) by using DMLE+2.2 software. Three distinct common haplotypes, one for p.Tyr179Cys and two for p.Gly396Asp, were identified. Estimated mutation ages were 305?g (95% CS: 271-418) for p.Tyr179Cys and 350?g (95% CS: 313-435) for p.Gly396Asp. These results provide evidence for strong founder effects and suggest that the p.Tyr179Cys and p.Gly396Asp mutations derive from ancestors who lived between 5-8 thousand years and 6-9 thousand years B.C., respectively.

SUBMITTER: Aretz S 

PROVIDER: S-EPMC4060104 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature

altmetric image

Publications

MUTYH-associated polyposis (MAP): evidence for the origin of the common European mutations p.Tyr179Cys and p.Gly396Asp by founder events.

Aretz Stefan S   Tricarico Rossella R   Papi Laura L   Spier Isabel I   Pin Elisa E   Horpaopan Sukanya S   Cordisco Emanuela Lucci EL   Pedroni Monica M   Stienen Dietlinde D   Gentile Annamaria A   Panza Anna A   Piepoli Ada A   de Leon Maurizio Ponz MP   Friedl Waltraut W   Viel Alessandra A   Genuardi Maurizio M  

European journal of human genetics : EJHG 20130130 7


MUTYH-associated polyposis (MAP) is an autosomal recessive adenomatous polyposis caused by biallelic germline mutations of the base-excision-repair gene MUTYH. In MAP patients of European origin, the combined allele frequency of the mutations p.Tyr179Cys and p.Gly396Asp ranges between 50 and 82%, while these mutations have not been identified in Far Eastern Asian populations, supporting the hypothesis that a founder effect has occurred at some point in European history. To investigate the natura  ...[more]

Similar Datasets

| S-EPMC2691665 | biostudies-literature
| S-EPMC3689730 | biostudies-literature
| S-EPMC7407923 | biostudies-literature
| S-EPMC4698287 | biostudies-literature
| S-EPMC3410368 | biostudies-literature
| S-EPMC2648054 | biostudies-literature
| S-EPMC1735996 | biostudies-other
| S-EPMC4832337 | biostudies-literature
| S-EPMC1199304 | biostudies-literature
| S-EPMC4625907 | biostudies-literature