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Mendeliome v1.4512 LMNB1 upstream region Sarah Milton Region: LMNB1 upstream region was added
Region: LMNB1 upstream region was added to Mendeliome. Sources: Literature
Mode of inheritance for Region: LMNB1 upstream region was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for Region: LMNB1 upstream region were set to PMID: 30842973; 30697589; 25701871
Phenotypes for Region: LMNB1 upstream region were set to Adult-onset autosomal dominant demyelinating leukodystrophy, MONDO:0008215
Review for Region: LMNB1 upstream region was set to GREEN
Added comment: LMNB1 encodes an intermediate filament proteins which play a role in forming the nuclear lamina lining the inner nuclear membrane. Overexpression of LMNB1 via gene duplication has been well established to cause adult-onset autosomal dominant demyelinating leukodystrophy, MONDO:0008215.

PMID: 30842973; 30697589; 25701871 report deletional forms of the phenotype. With an approx 167kb minimal critical region upstream of LMNB1 that has been associated with adult-onset autosomal dominant demyelinating leukodystrophy in 5 families with over 35 individuals affected.

The deletion is upstream of the promoter of LMNB1 and involves other protein coding genes (ALDH7A1/PHAX) that are thought to be bystanders. The proposed molecular mechanism of disease for these deletions is disruption of a topologically associated domain boundary resulting in overexpression of LMNB1. This occurs by placing the promoter in closer proximity to an upstream enhancer element.

Extensive functional studies support this hypothesis and affected individuals have been shown to have upregulated LMNB1 protein on Western blot.

Note the coordinates differ between families with much larger deletions reported in many affected individuals.
Sources: Literature
Mendeliome v1.335 ALDH7A1 Zornitza Stark Tag treatable tag was added to gene: ALDH7A1.
Mendeliome v0.5537 ALDH7A1 Zornitza Stark Marked gene: ALDH7A1 as ready
Mendeliome v0.5537 ALDH7A1 Zornitza Stark Gene: aldh7a1 has been classified as Green List (High Evidence).
Mendeliome v0.5537 ALDH7A1 Zornitza Stark Phenotypes for gene: ALDH7A1 were changed from to Epilepsy, pyridoxine-dependent, MIM# 266100
Mendeliome v0.5536 ALDH7A1 Zornitza Stark Publications for gene: ALDH7A1 were set to
Mendeliome v0.5535 ALDH7A1 Zornitza Stark Mode of inheritance for gene: ALDH7A1 was changed from Unknown to BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5534 ALDH7A1 Zornitza Stark reviewed gene: ALDH7A1: Rating: GREEN; Mode of pathogenicity: None; Publications: ; Phenotypes: Epilepsy, pyridoxine-dependent, MIM# 266100; Mode of inheritance: BIALLELIC, autosomal or pseudoautosomal
Mendeliome v0.5525 ALDH7A1 Eleanor Williams reviewed gene: ALDH7A1: Rating: ; Mode of pathogenicity: None; Publications: 32969477; Phenotypes: ; Mode of inheritance: None
Mendeliome v0.0 ALDH7A1 Zornitza Stark gene: ALDH7A1 was added
gene: ALDH7A1 was added to Mendeliome_VCGS. Sources: Expert Review Green,Victorian Clinical Genetics Services
Mode of inheritance for gene: ALDH7A1 was set to Unknown