Paediatric disorders - additional genes
Gene: FOXI3
The rating of this gene has been updated to Green and the mode of inheritance set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown following NHS Genomic Medicine Service approval.Created: 11 Oct 2023, 1:16 p.m. | Last Modified: 11 Oct 2023, 1:16 p.m.
Panel Version: 3.5
Comment on list classification: This gene should be promoted to Green at the next GMS panel update.
A recent study (highlighted by GEL Clinical Team) provides corroborating evidence linking FOXI3 with microtia with or without atresia. Sufficient unrelated cases and supported by concordant animal models.Created: 14 Nov 2022, 5:12 p.m. | Last Modified: 14 Nov 2022, 5:12 p.m.
Panel Version: 1.108
Quiat et al. 2022 (PMID: 36260083) reported 4 unrelated families affected by microtia with or without atresia and different predicted deleterious heterozygous variants in the FOXI3 gene. Variants segregated with disease, including in multiplex families, albeit with reduced penetrance. In vitro studies showed that patient variants conferred abnormal FOXI3 nuclear and cytoplasmic localization.
Tassano et al. 2015 (PMID: 25655429) also identified a patient with microtia, aural atresia, and ipsilateral agenesis of the carotid artery who harboured a 2.5 Mb deletion overlapping the FOXI3 gene.
Congenital ear malformations with variable penetrance have been described in a Foxi3 knockout mouse model and haploinsufficient canine breeds supporting a role of FOXI3 in the human phenotype (PMID: 18787161; 24650709)
Sources: Expert ReviewCreated: 14 Nov 2022, 5:10 p.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Phenotypes
Bilateral Microtia; Congenital aural atresia
Publications
Tag Q4_22_promote_green was removed from gene: FOXI3.
Source Expert Review Green was added to FOXI3. Source NHS GMS was added to FOXI3. Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Gene: foxi3 has been classified as Amber List (Moderate Evidence).
gene: FOXI3 was added gene: FOXI3 was added to Paediatric disorders - additional genes. Sources: Expert Review Q4_22_promote_green tags were added to gene: FOXI3. Mode of inheritance for gene: FOXI3 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown Publications for gene: FOXI3 were set to 36260083; 25655429; 18787161; 24650709 Phenotypes for gene: FOXI3 were set to Bilateral Microtia; Congenital aural atresia Review for gene: FOXI3 was set to GREEN