A genetic linkage study in Brazil identifies a new locus for persistent developmental stuttering on chromosome 10

Domingues, C. E. F. [UNESP]; Olivera, C. M. C. [UNESP]; Oliveira, B. V. [UNESP]; Juste, F. S.; Andrade, C. R. F.; Giacheti, Célia Maria [UNESP]; Moretti-Ferreira, D. [UNESP]; Drayna, D.

A genetic linkage study in Brazil identifies a new locus for persistent developmental stuttering on chromosome 10

Arquivos

WOS000334114800133.pdf (1.6 MB)

Data

2014-01-01

Autores

Giacheti, Célia Maria

Moretti-Ferreira, D.

Drayna, D.

Editor

Funpec-editora

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

Although twin, adoption, and family studies demonstrate that genetic factors are involved in the origins of stuttering, the mode of transmission of the disorder in families is not well defined and stuttering is considered a genetically complex trait. We performed a genome-wide linkage scan in a group of 43 Brazilian families, each containing multiple cases of persistent developmental stuttering. Linkage analysis under a dominant model of inheritance generated significant evidence of linkage in two Brazilian families, with a combined maximum single-point LOD score of 4.02 and a multipoint LOD score of 4.28 on chromosome 10q21. This demonstrated the presence of a novel variant gene at this locus that predisposes individuals to stuttering, which provides an opportunity to identify novel genetic mechanisms that underlie this disorder.