TY - JOUR
T1 - GNB5 Mutations Cause an Autosomal-Recessive Multisystem Syndrome with Sinus Bradycardia and Cognitive Disability
AU - Lodder, Elisabeth M
AU - De Nittis, Pasquelena
AU - Koopman, Charlotte D
AU - Wiszniewski, Wojciech
AU - Moura de Souza, Carolina Fischinger
AU - Lahrouchi, Najim
AU - Guex, Nicolas
AU - Napolioni, Valerio
AU - Tessadori, Federico
AU - Beekman, Leander
AU - Nannenberg, Eline A
AU - Boualla, Lamiae
AU - Blom, Nico A
AU - de Graaff, Wim
AU - Kamermans, M.
AU - Cocciadiferro, Dario
AU - Malerba, Natascia
AU - Mandriani, Barbara
AU - Akdemir, Zeynep Hande Coban
AU - Fish, Richard J
AU - Eldomery, Mohammad K
AU - Ratbi, Ilham
AU - Wilde, Arthur A M
AU - de Boer, Teun
AU - Simonds, William F
AU - Neerman-Arbez, Marguerite
AU - Sutton, V Reid
AU - Kok, Fernando
AU - Lupski, James R
AU - Reymond, Alexandre
AU - Bezzina, Connie R
AU - Bakkers, Jeroen
AU - Merla, Giuseppe
N1 - Copyright © 2016 American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.
PY - 2016
Y1 - 2016
N2 - GNB5 encodes the G protein β subunit 5 and is involved in inhibitory G protein signaling. Here, we report mutations in GNB5 that are associated with heart-rate disturbance, eye disease, intellectual disability, gastric problems, hypotonia, and seizures in nine individuals from six families. We observed an association between the nature of the variants and clinical severity; individuals with loss-of-function alleles had more severe symptoms, including substantial developmental delay, speech defects, severe hypotonia, pathological gastro-esophageal reflux, retinal disease, and sinus-node dysfunction, whereas related heterozygotes harboring missense variants presented with a clinically milder phenotype. Zebrafish gnb5 knockouts recapitulated the phenotypic spectrum of affected individuals, including cardiac, neurological, and ophthalmological abnormalities, supporting a direct role of GNB5 in the control of heart rate, hypotonia, and vision.
AB - GNB5 encodes the G protein β subunit 5 and is involved in inhibitory G protein signaling. Here, we report mutations in GNB5 that are associated with heart-rate disturbance, eye disease, intellectual disability, gastric problems, hypotonia, and seizures in nine individuals from six families. We observed an association between the nature of the variants and clinical severity; individuals with loss-of-function alleles had more severe symptoms, including substantial developmental delay, speech defects, severe hypotonia, pathological gastro-esophageal reflux, retinal disease, and sinus-node dysfunction, whereas related heterozygotes harboring missense variants presented with a clinically milder phenotype. Zebrafish gnb5 knockouts recapitulated the phenotypic spectrum of affected individuals, including cardiac, neurological, and ophthalmological abnormalities, supporting a direct role of GNB5 in the control of heart rate, hypotonia, and vision.
U2 - 10.1016/j.ajhg.2016.06.025
DO - 10.1016/j.ajhg.2016.06.025
M3 - Article
C2 - 27523599
SN - 0002-9297
VL - 99
SP - 704
EP - 710
JO - American Journal of Human Genetics
JF - American Journal of Human Genetics
IS - 3
ER -