TrkA mediates effect of novel KIDINS220 mutation in human brain ventriculomegaly.
Hum Mol Genet
; 29(23): 3757-3764, 2021 02 04.
Article
in En
| MEDLINE
| ID: mdl-33205811
ABSTRACT
Congenital hydrocephalus is a potentially devastating, highly heterogeneous condition whose genetic subset remains incompletely known. We here report a consanguineous family where three fetuses presented with brain ventriculomegaly and limb contractures and shared a very rare homozygous variant of KIDINS220, consisting of an in-frame deletion of three amino acids adjacent to the fourth transmembrane domain. Fetal brain imaging and autopsy showed major ventriculomegaly, reduced brain mass, and with no histomorphologic abnormalities. We demonstrate that the binding of KIDINS220 to TrkA is diminished by the deletion mutation. This family is the second that associates a KIDINS220 genetic variant with human ventriculomegaly and limb contractures, validating causality of the gene and indicating TrkA as a likely mediator of the phenotype.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Receptor, trkA
/
Fetus
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Hydrocephalus
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Membrane Proteins
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Mutation
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Nerve Tissue Proteins
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Nervous System Malformations
Type of study:
Etiology_studies
Limits:
Female
/
Humans
/
Male
Language:
En
Journal:
Hum Mol Genet
Journal subject:
BIOLOGIA MOLECULAR
/
GENETICA MEDICA
Year:
2021
Document type:
Article
Affiliation country:
Belgium