Title: The fibulin-1 gene (FBLN1) is disrupted in a t(12;22) associated with a complex type of synpolydactyly
Authors: Debeer, Philippe ×
Schoenmakers, E F P M
Twal, W O
Argraves, W S
De Smet, Luc
Fryns, Jean-Pierre
Van de Ven, Willem #
Issue Date: Feb-2002
Series Title: Journal of medical genetics. vol:39 issue:2 pages:98-104
Abstract: Molecular analysis of the reciprocal chromosomal translocation t(12;22)(p11.2;q13.3) cosegregating with a complex type of synpolydactyly showed involvement of an alternatively spliced exon of the fibulin-1 gene (FBLN1 located in 22q13.3) and the C12orf2 (HoJ-1) gene on the short arm of chromosome 12. Investigation of the possible functional involvement of the fibulin-1 protein (FBLN1) in the observed phenotype showed that FBLN1 is expressed in the extracellular matrix (ECM) in association with the digits in the developing limb. Furthermore, fibroblasts derived from patients with the complex type of synpolydactyly displayed alterations in the level of FBLN1-D splice variant incorporated into the ECM and secreted into the conditioned culture medium. By contrast, the expression of the FBLN1-C splice variant was not perturbed in the patient fibroblasts. Based on these findings, we propose that the t(12;22) results in haploinsufficiency of the FBLN1-D variant, which could lead to the observed limb malformations.
ISSN: 0022-2593
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Clinical Genetics Section (-)
Research Group for Musculoskeletal Rehabilitation
Department of Human Genetics - miscellaneous
× corresponding author
# (joint) last author

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