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Monogenic hearing loss v2.230 MN1 Eleanor Williams Tag for-review was removed from gene: MN1.
Monogenic hearing loss v2.221 MN1 Eleanor Williams commented on gene: MN1
Monogenic hearing loss v2.220 MN1 Eleanor Williams Source Expert Review Green was added to MN1.
Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Monogenic hearing loss v2.146 MN1 Arina Puzriakova Phenotypes for gene: MN1 were changed from CEBALID syndrome, 618774 to CEBALID syndrome, OMIM:618774; CEBALID syndrome, MONDO:0032908
Monogenic hearing loss v2.42 MN1 Arina Puzriakova Classified gene: MN1 as Amber List (moderate evidence)
Monogenic hearing loss v2.42 MN1 Arina Puzriakova Added comment: Comment on list classification: There is enough evidence to rate this gene GREEN at the next major review - added to this panel following suggestion from the clinical team.
Monogenic hearing loss v2.42 MN1 Arina Puzriakova Gene: mn1 has been classified as Amber List (Moderate Evidence).
Monogenic hearing loss v2.41 MN1 Arina Puzriakova gene: MN1 was added
gene: MN1 was added to Hearing loss. Sources: Literature
for-review tags were added to gene: MN1.
Mode of inheritance for gene: MN1 was set to MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
Publications for gene: MN1 were set to 31834374; 31839203
Phenotypes for gene: MN1 were set to CEBALID syndrome, 618774
Review for gene: MN1 was set to GREEN
Added comment: Associated with phenotype in OMIM, and a probable gene for MN1 C-terminal truncation syndrome in G2P.

Over 20 unrelated probands reported with heterozygous MN1 truncating variants, associated with a distinct phenotype which includes DD, craniofacial abnormalities, and structural abnormalities in the brain (e.g. polymicrogyria, dysmorphic corpus callosum and anomalies of the cerebellum). 20/25 individuals had conductive and/or sensorineural hearing loss (no report on hearing status in a further 6 individuals across the two studies).

Most variants cluster in the C-terminal, and all were predicted to escape NMD. Authors postulated that the resulting truncated protein may have a dominant-negative or gain-of-function effect.
Sources: Literature