Growth failure in early childhood
Gene: MTX2Comment on phenotypes: Previous phenotypes (overwritten): Mandibuloacral dysplasia;lipodystrophy;arterial calcification;growth retardationCreated: 26 Mar 2024, 4 p.m. | Last Modified: 26 Mar 2024, 4 p.m.
Panel Version: 3.39
The rating of this gene has been updated following NHS Genomic Medicine Service approval.Created: 3 Mar 2022, 1:49 p.m. | Last Modified: 3 Mar 2022, 1:49 p.m.
Panel Version: 1.100
The Genomics England Clinical Team suggested that this gene should be added to this panel as growth retardation is a phenotype. Therefore, this gene has been given an Amber rating and will be promoted to Green at the next review.
Review from Zornitza Stark on the Lipodystrophy - childhood onset:
"Seven individuals from 5 unrelated families reported with severe progeroid form of MAD with growth retardation, small viscerocranium with mandibular underdevelopment, distal acro-osteolyses, lipodystrophy, altered skin pigmentation, renal focal glomerulosclerosis, and extremely severe hypertension in most cases, eventually associated with disseminated arterial calcification. Loss of MTX2 in patients' primary fibroblasts led to loss of Metaxin-1 (MTX1) and mitochondrial dysfunction, including network fragmentation and oxidative phosphorylation impairment. Furthermore, patients' fibroblasts were resistant to induced apoptosis, leading to increased cell senescence and mitophagy and reduced proliferation. Sources: Literature
Zornitza Stark (Australian Genomics), 5 Oct 2020"
Sources: Literature, Expert ReviewCreated: 13 Nov 2020, 1:32 p.m.
Mode of inheritance
BIALLELIC, autosomal or pseudoautosomal
Phenotypes
Mandibuloacral dysplasia; lipodystrophy; arterial calcification; growth retardation
Publications
Phenotypes for gene: MTX2 were changed from Mandibuloacral dysplasia; lipodystrophy; arterial calcification; growth retardation to Mandibuloacral dysplasia progeroid syndrome, OMIM:619127
Tag for-review was removed from gene: MTX2.
Source Expert Review Green was added to MTX2. Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Gene: mtx2 has been classified as Amber List (Moderate Evidence).
gene: MTX2 was added gene: MTX2 was added to Growth failure in early childhood. Sources: Literature,Expert Review for-review tags were added to gene: MTX2. Mode of inheritance for gene: MTX2 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: MTX2 were set to 32917887 Phenotypes for gene: MTX2 were set to Mandibuloacral dysplasia; lipodystrophy; arterial calcification; growth retardation Review for gene: MTX2 was set to GREEN