Thoracic aortic aneurysm and dissection

Gene: TNXB

Red List (low evidence)

TNXB (tenascin XB)
EnsemblGeneIds (GRCh38): ENSG00000168477
EnsemblGeneIds (GRCh37): ENSG00000168477
OMIM: 600985, Gene2Phenotype
TNXB is in 10 panels

5 reviews

Ivone Leong (Genomics England Curator)

Red List (low evidence)

Submitted on behalf of the GMS Cardiology specialist group. The group has agreed that this gene should be Red on this panel.
Created: 18 Nov 2019, 4:33 p.m. | Last Modified: 18 Nov 2019, 4:33 p.m.
Panel Version: 0.35

James Eden (Manchester)

Red List (low evidence)

Insufficient association with aortopathy.
Created: 2 Oct 2019, 4:21 p.m. | Last Modified: 2 Oct 2019, 4:21 p.m.
Panel Version: 0.32

Mode of inheritance
BOTH monoallelic and biallelic, autosomal or pseudoautosomal

Ehlers-Danlos syndrome, classic-like, 1 606408; Vesicoureteral reflux 8 615963


Rebecca Whittington (South West GLH)

Red List (low evidence)

606408 Ehlers-Danlos syndrome, classic-like, 1 -syndromic CTD with quadricuspid aortic valve and MVP.
Created: 25 Mar 2019, 4:30 p.m.
Demirdos et al 2017 Clin Genet 91:411 PMID:27582382 17 patients of 11 families with autosomal recessive inheritance and childhood onset. 12 different mutations were detected, most of which are suspected to lead to NMD. Abstract only (no mention of cardiac phenotype in abstract). Several publications reviewed but no mention of cardiac phenotype.
Created: 25 Mar 2019, 4:27 p.m.

Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal

Ellen McDonagh (Genomics England Curator)

Not on the Inherited Cardiac Condition Genes panel for Familial aortic anuerysm reported in: Development of a Comprehensive Sequencing Assay for Inherited Cardiac Condition Genes, Pua et al, Journal of Cardiovascular Translational Research, online Feb 2016 (doi:10.​1007/​s12265-016-9673-5). The panel contains disease-causing, putatively pathogenic, research and phenocopy genes.
Created: 19 Feb 2016, 10:59 a.m.

Matina Prapa (Genomics England Curator)

Red List (low evidence)

Tenascin X deficiency (From PMID: 20847697): Homozygous mutations have been identified in TNXB in a few individuals with an autosomal-recessive EDS phenotype characterized by joint hypermobility, skin hyperextensibility without atrophic scarring, easy bruising and occasionally increased laxity of the genitourinary tract causing uterine and vaginal prolapse, and increased risk for postpartum hemorrhage. Heterozygotes for the same mutation, especially females, appear to have an EDS hypermobility phenotype.
No links to vascular disease.
Created: 14 Feb 2016, 3:17 p.m.

Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted

606408- Ehlers-Danlos syndrome due to tenascin X deficiency


History Filter Activity

18 Apr 2019, Gel status: 1

Created, Added New Source, Set mode of inheritance

Ellen McDonagh (Genomics England Curator)

gene: TNXB was added gene: TNXB was added to GMS FTAAD placeholder panel. Sources: South West GLH,Expert Review Red Mode of inheritance for gene: TNXB was set to BIALLELIC, autosomal or pseudoautosomal