Title: CHRNG genotype-phenotype correlations in the multiple pterygium syndromes
Authors: Vogt, Julie ×
Morgan, Neil V
Rehal, Pauline
Faivre, Laurence
Brueton, Louise A
Becker, Kristin
Fryns, Jean-Pierre
Holder, Sue
Islam, Lily
Kivuva, Emma
Lynch, Sally Ann
Touraine, Renaud
Wilson, Louise C
Macdonald, Fiona
Maher, Eamonn R #
Issue Date: Jan-2012
Publisher: BMJ Publishing Group
Series Title: Journal of Medical Genetics vol:49 issue:1 pages:21-26
Abstract: Background Germline mutations in the CHRNG gene that encodes the γ subunit of the embryonal acetylcholine receptor may cause the non-lethal Escobar variant (EVMPS) or the lethal form (LMPS) of multiple pterygium syndrome (MPS). In addition CHRNG mutations and mutations in other components of the embryonal acetylcholine receptor may present with fetal akinesia deformation sequence (FADS) without pterygia. Methods In order to elucidate further the role of CHRNG mutations in MPS/FADS, this study evaluated the results of CHRNG mutation analysis in 100 families with a clinical diagnosis of MPS/FADS. Results CHRNG mutations were identified in 11/41 (27%) of families with EVMPS and 5/59 (8%) with LMPS/FADS. Most patients with a detectable CHRNG mutation (21 of 24 (87.5%)) had pterygia but no CHRNG mutations were detected in the presence of central nervous system anomalies. Discussion The mutation spectrum was similar in EVMPS and LMPS/FADS kindreds and EVMPS and LMPS phenotypes were observed in different families with the same CHRNG mutation. Despite this intrafamilial variability, it is estimated that there is a 95% chance that a subsequent sibling will have the same MPS phenotype (EVMPS or LMPS) as the proband (though concordance is less for more distant relatives). Based on these findings, a molecular genetic diagnostic pathway for the investigation of MPS/FADS is proposed.
ISSN: 0022-2593
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Human Genetics - miscellaneous
× corresponding author
# (joint) last author

Files in This Item:
File Description Status SizeFormat
Vogt JMG 2012.pdfpublisher's version pdf Published 324KbAdobe PDFView/Open Request a copy

These files are only available to some KU Leuven Association staff members


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science