| Date | Panel | Item | Activity | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Intellectual disability - microarray and sequencing v3.1179 | NAA20 |
Sarah Leigh changed review comment from: Not associated with a phenotype in OMIM nor Gen2Phen. Two missense variants reported as homozygotes in one family each. In silico predictions and in vitro functional studies provide evidence that these variants will adversely affect their capacity to form a NatB complex with NAA25, and in vitro acetylation assays revealed reduced catalytic activities toward different NatB substrates (PMID 34230638). Children from these two families had developmental delay, intellectual disability (mild to moderate family 1, severe family 2). The two children in family 1 in this study had a head circumcernces of -2.3 & -1.9 SD (which is not regarded as severe microcephaly). The three children from family 2 this study had a head circumcernces of -3.5, -3.0 & -3.5 SD (which is regarded as severe microcephaly). Subtle dysmorphic features were also reported. Sources: Literature; to: Not associated with a phenotype in OMIM nor Gen2Phen. Two missense variants reported as homozygotes in one family each. In silico predictions and in vitro functional studies provide evidence that these variants will adversely affect their capacity to form a NatB complex with NAA25, and in vitro acetylation assays revealed reduced catalytic activities toward different NatB substrates (PMID 34230638). Children from these two families had developmental delay, intellectual disability (mild to moderate family 1, severe family 2). The two children in family 1 in this study had a head circumcernces of -2.3 & -1.9 SD (which is not regarded as severe microcephaly). The three children from family 2 in this study had a head circumcernces of -3.5, -3.0 & -3.5 SD (which is regarded as severe microcephaly). Subtle dysmorphic features were also reported. Sources: Literature |
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| Intellectual disability - microarray and sequencing v3.1179 | NAA20 | Sarah Leigh Classified gene: NAA20 as Amber List (moderate evidence) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v3.1179 | NAA20 | Sarah Leigh Added comment: Comment on list classification: There is enough evidence for this gene to be amber on this panel, based on two missense variants, which have supporting in silico and experimental evidence in cases with mild to severe intellectually disability (PMID 34230638). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v3.1179 | NAA20 | Sarah Leigh Gene: naa20 has been classified as Amber List (Moderate Evidence). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v3.1178 | NAA20 | Sarah Leigh Added comment: Comment on phenotypes: Currently there is no phenotype associated with this gene in OMIM, Gen2Phen or MONDO (13/07/2021). | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v3.1178 | NAA20 | Sarah Leigh Phenotypes for gene: NAA20 were changed from autosomal recessive developmental delay, intellectual disability, and microcephaly to autosomal recessive developmental delay, intellectual disability, and microcephaly | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intellectual disability - microarray and sequencing v3.1177 | NAA20 |
Sarah Leigh gene: NAA20 was added gene: NAA20 was added to Intellectual disability. Sources: Literature Mode of inheritance for gene: NAA20 was set to BIALLELIC, autosomal or pseudoautosomal Publications for gene: NAA20 were set to 34230638 Phenotypes for gene: NAA20 were set to autosomal recessive developmental delay, intellectual disability, and microcephaly Review for gene: NAA20 was set to AMBER Added comment: Not associated with a phenotype in OMIM nor Gen2Phen. Two missense variants reported as homozygotes in one family each. In silico predictions and in vitro functional studies provide evidence that these variants will adversely affect their capacity to form a NatB complex with NAA25, and in vitro acetylation assays revealed reduced catalytic activities toward different NatB substrates (PMID 34230638). Children from these two families had developmental delay, intellectual disability (mild to moderate family 1, severe family 2). The two children in family 1 in this study had a head circumcernces of -2.3 & -1.9 SD (which is not regarded as severe microcephaly). The three children from family 2 this study had a head circumcernces of -3.5, -3.0 & -3.5 SD (which is regarded as severe microcephaly). Subtle dysmorphic features were also reported. Sources: Literature |
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