rs1553994814

Variant names:

• chr4-139336869-TA-T
• rs1553994814
• NM_057175.5:c.163delA

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1 PM2 PP5

The NM_057175.5(NAA15):​c.163delA​(p.Thr55HisfsTer2) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NAA15 NM_057175.5 frameshift
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.353
• Publications: 0 publications found

Genes affected

NAA15 (HGNC:30782): (N-alpha-acetyltransferase 15, NatA auxiliary subunit) N-alpha-acetylation is among the most common post-translational protein modifications in eukaryotic cells. This process involves the transfer of an acetyl group from acetyl-coenzyme A to the alpha-amino group on a nascent polypeptide and is essential for normal cell function. This gene encodes the auxillary subunit of the N-terminal acetyltransferase A (NatA) complex. [provided by RefSeq, Jan 2017]

NAA15 Gene-Disease associations (from GenCC):

• intellectual disability, autosomal dominant 50

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Illumina, Labcorp Genetics (formerly Invitae)
• syndromic intellectual disability

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 4-139336869-TA-T is Pathogenic according to our data. Variant chr4-139336869-TA-T is described in ClinVar as Pathogenic. ClinVar VariationId is 559845.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_057175.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NAA15	NM_057175.5	MANE Select	c.163delA	p.Thr55HisfsTer2	frameshift	Exon 3 of 20	NP_476516.1
	NAA15	NM_001410842.1		c.163delA	p.Thr55HisfsTer2	frameshift	Exon 3 of 20	NP_001397771.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NAA15	ENST00000296543.10	TSL:1 MANE Select	c.163delA	p.Thr55HisfsTer2	frameshift	Exon 3 of 20	ENSP00000296543.4
	NAA15	ENST00000398947.1	TSL:5	c.163delA	p.Thr55HisfsTer2	frameshift	Exon 3 of 20	ENSP00000381920.1
	NAA15	ENST00000920374.1		c.163delA	p.Thr55HisfsTer2	frameshift	Exon 3 of 20	ENSP00000590433.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Intellectual disability, autosomal dominant 50 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.35
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1553994814; hg19: chr4-140258023;