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Linkage analysis confirms heterogeneity of hereditary gingival fibromatosis
Author(s) -
Nibali L,
Medlar A,
Stanescu H,
Kleta R,
Darbar U,
Donos N
Publication year - 2013
Publication title -
oral diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.953
H-Index - 87
eISSN - 1601-0825
pISSN - 1354-523X
DOI - 10.1111/j.1601-0825.2012.01965.x
Subject(s) - genetic linkage , genetic analysis , genetic heterogeneity , genetics , gene , linkage (software) , biology , fibromatosis , pathology , medicine , phenotype
Objectives Hereditary Gingival Fibromatosis ( HGF ) is a rare benign fibrous lesion of the gingival tissues presumably caused by single gene defects. The aim of this study was to identify the genetic defect leading to HGF in an extended pedigree. Materials and Methods We report the clinical features and genetic analysis of a family affected by HGF . A total of 17 subjects were assessed clinically and had blood samples taken for DNA extraction. Multipoint parametric linkage analysis was performed to identify the possible chromosomal location responsible for HGF in this family. Results Presence of severe HGF associated with tooth impaction was confirmed for seven members of this three‐generation family. Linkage analysis revealed that loci on chromosomes 7, 10, 13, 15, 16, 17, 19 and 20 were linked to this trait. Previously found mutations in the SOS 1 and GINGF loci were therefore excluded by this analysis. Conclusions This study brings further evidence for genetic heterogeneity of HGF and points towards the existence of different, not‐yet‐identified genes linked to this condition.