rs863224918

Variant names:

• chr9-132271758-CAA-AT
• rs863224918
• NM_015046.7:c.7149_7151delTTGinsAT

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_015046.7(SETX):​c.7149_7151delTTGinsAT​(p.Asp2383GlufsTer26) variant causes a frameshift, missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as no classification for the single variant (no stars). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SETX NM_015046.7 frameshift, missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.86
• Publications: 0 publications found

Genes affected

SETX (HGNC:445): (senataxin) This gene encodes a protein named for its homology to the Sen1p protein of fungi which has RNA helicase activity encoded by a domain at the C-terminal end of the protein. The protein encoded by this gene contains a DNA/RNA helicase domain at its C-terminal end which suggests that it may be involved in both DNA and RNA processing. Mutations in this gene have been associated with ataxia-ocular apraxia-2 (AOA2) and an autosomal dominant form of juvenile amyotrophic lateral sclerosis (ALS4). [provided by RefSeq, Jul 2008]

SETX Gene-Disease associations (from GenCC):

• amyotrophic lateral sclerosis type 4

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• distal hereditary motor neuropathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Pathogenic. The variant received 10 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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015046.7. 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
	SETX	NM_015046.7	MANE Select	c.7149_7151delTTGinsAT	p.Asp2383GlufsTer26	frameshift missense	Exon 24 of 26	NP_055861.3
	SETX	NM_001351528.2		c.7149_7151delTTGinsAT	p.Asp2383GlufsTer26	frameshift missense	Exon 24 of 27	NP_001338457.1	Q7Z333-4
	SETX	NM_001351527.2		c.7149_7151delTTGinsAT	p.Asp2383GlufsTer26	frameshift missense	Exon 24 of 26	NP_001338456.1	Q7Z333-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SETX	ENST00000224140.6	TSL:1 MANE Select	c.7149_7151delTTGinsAT	p.Asp2383GlufsTer26	frameshift missense	Exon 24 of 26	ENSP00000224140.5	Q7Z333-1
	SETX	ENST00000923216.1		c.7149_7151delTTGinsAT	p.Asp2383GlufsTer39	frameshift missense	Exon 24 of 28	ENSP00000593275.1
	SETX	ENST00000923217.1		c.7149_7151delTTGinsAT	p.Asp2383GlufsTer39	frameshift missense	Exon 24 of 27	ENSP00000593276.1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		6.9
Mutation Taster		=3/197	disease causing (fs/PTC)

Splicing

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

Other links and lift over

dbSNP: rs863224918; hg19: chr9-135147145;