Crossed VEP asymmetry in a patient with AHR-linked infantile nystagmus and foveal hypoplasia.
LASSEAUX, Eulalie
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
MICHAUD, Vincent
CHU de Bordeaux Pellegrin [Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
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CHU de Bordeaux Pellegrin [Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
LASSEAUX, Eulalie
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
MICHAUD, Vincent
CHU de Bordeaux Pellegrin [Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
CHU de Bordeaux Pellegrin [Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
ARVEILER, Benoit
Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
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Centre Hospitalier Universitaire de Bordeaux [CHU Bordeaux]
Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) [U1211 INSERM/MRGM]
Language
EN
Article de revue
This item was published in
Documenta Ophthalmologica. 2024-08-01, vol. 149, n° 1, p. 47-52
English Abstract
Infantile nystagmus and foveal hypoplasia associated with AHR gene defects is a newly recognized and rare disorder. Our aim was to present a patient with a novel biallelic AHR pathogenic variant with electrophysiological ...Read more >
Infantile nystagmus and foveal hypoplasia associated with AHR gene defects is a newly recognized and rare disorder. Our aim was to present a patient with a novel biallelic AHR pathogenic variant with electrophysiological evidence of chiasmal misrouting. Complete ocular examination, fundus imaging, visual evoked potentials (VEP) and full-field electroretinography were performed at initial presentation. Genetic testing was performed by whole exome sequencing. Female patient of 6 years old presented a reduced best corrected visual acuity, an infantile nystagmus and a grade III typical foveal hypoplasia without ocular hypopigmentation. A crossed asymmetry was discovered on pattern onset/offset VEP. Genetic testing put in evidence a novel homozygous variant in AHR: c.2242del, p. (Gln748Lysfs5). During 11-years follow-up period, BCVA gradually improved. There was no evidence of retinal degeneration. AHR gene defects could be associated with infantile nystagmus, foveal hypoplasia and chiasmal misrouting.Read less <
English Keywords
AHR gene
Crossed VEP asymmetry
Foveal hypoplasia
Infantile nystagmus