REST Final-Exon-Truncating Mutations Cause Hereditary Gingival Fibromatosis

Hereditary gingival fibromatosis (HGF) is the most common genetic form of gingival fibromatosis that develops as a slowly progressive, benign, localized or generalized enlargement of keratinized gingiva. HGF is a genetically heterogeneous disorder and can be transmitted either as an autosomal-domina...

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Bibliographic Details
Published in:American journal of human genetics 2017-07, Vol.101 (1), p.149-156
Main Authors: Bayram, Yavuz, White, Janson J., Elcioglu, Nursel, Cho, Megan T., Zadeh, Neda, Gedikbasi, Asuman, Palanduz, Sukru, Ozturk, Sukru, Cefle, Kivanc, Kasapcopur, Ozgur, Coban Akdemir, Zeynep, Pehlivan, Davut, Begtrup, Amber, Carvalho, Claudia M.B., Paine, Ingrid Sophie, Mentes, Ali, Bektas-Kayhan, Kivanc, Karaca, Ender, Jhangiani, Shalini N., Muzny, Donna M., Gibbs, Richard A., Lupski, James R.
Format: Article
Language:English
Subjects:
Adolescent
Base Sequence
Chromosome Segregation - genetics
Exons - genetics
Family
Female
Fibromatosis, Gingival - genetics
Genetic Predisposition to Disease
gingival fibromatosis
Humans
Male
Middle Aged
mosaic mutation
Mutation - genetics
nonsense-mediated decay
Pedigree
RE1-silencing transcription factor
Repressor Proteins - genetics
REST
whole-exome sequencing
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Summary:Hereditary gingival fibromatosis (HGF) is the most common genetic form of gingival fibromatosis that develops as a slowly progressive, benign, localized or generalized enlargement of keratinized gingiva. HGF is a genetically heterogeneous disorder and can be transmitted either as an autosomal-dominant or autosomal-recessive trait or appear sporadically. To date, four loci (2p22.1, 2p23.3–p22.3, 5q13–q22, and 11p15) have been mapped to autosomes and one gene (SOS1) has been associated with the HGF trait observed to segregate in a dominant inheritance pattern. Here we report 11 individuals with HGF from three unrelated families. Whole-exome sequencing (WES) revealed three different truncating mutations including two frameshifts and one nonsense variant in RE1-silencing transcription factor (REST) in the probands from all families and further genetic and genomic analyses confirmed the WES-identified findings. REST is a transcriptional repressor that is expressed throughout the body; it has different roles in different cellular contexts, such as oncogenic and tumor-suppressor functions and hematopoietic and cardiac differentiation. Here we show the consequences of germline final-exon-truncating mutations in REST for organismal development and the association with the HGF phenotype.
ISSN:0002-9297
1537-6605
DOI:10.1016/j.ajhg.2017.06.006