Fibromatosis, Gingival, 2

Description

Hereditary gingival fibromatosis is a benign disorder manifested by a slowly progressive enlargement of the oral gingival tissues (summary by Xiao et al., 2001).

For general phenotypic information and a discussion of genetic heterogeneity of hereditary gingival fibromatosis, see GINGF (135300).

Clinical Features

Xiao et al. (2001) reported a 4-generation Chinese family in which gingival fibromatosis manifested in the first year of life.

Mapping

In a 4-generation Chinese family segregating gingival fibromatosis, Xiao et al. (2001) identified a locus for the condition on chromosome 5q13-q22. A maximum 2-point lod score of 4.31 at D5S1721 (theta = 0.00) was observed. Haplotype analysis placed the critical region in the interval defined by D5S1491 and D5S1453. Within this region, calcium/calmodulin-dependent protein kinase IV (CAMK4; 114080) was considered a strong candidate.