rs797045067

Variant names:

• chr9-132297005-GTTTCTATTGC-G
• rs797045067
• NM_015046.7:c.5821_5830delGCAATAGAAA

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_015046.7(SETX):​c.5821_5830delGCAATAGAAA​(p.Ala1941LeufsTer6) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SETX NM_015046.7 frameshift
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4
• Conservation: PhyloP100: 6.89

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]

ACMG classification

Verdict is Pathogenic. Variant got 18 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 9-132297005-GTTTCTATTGC-G is Pathogenic according to our data. Variant chr9-132297005-GTTTCTATTGC-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 209188.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SETX	NM_015046.7	c.5821_5830delGCAATAGAAA	p.Ala1941LeufsTer6	frameshift_variant	Exon 14 of 26	ENST00000224140.6	NP_055861.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SETX	ENST00000224140.6	c.5821_5830delGCAATAGAAA	p.Ala1941LeufsTer6	frameshift_variant	Exon 14 of 26	1	NM_015046.7	ENSP00000224140.5
SETX	ENST00000436441.5	c.547_556delGCAATAGAAA	p.Ala183LeufsTer6	frameshift_variant	Exon 4 of 17	5		ENSP00000409143.1

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

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2 Pathogenic:3

Apr 04, 2014

Genetic Services Laboratory, University of Chicago

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jun 05, 2013

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This frameshift variant is categorized as deleterious according to ACMG guidelines (PMID:18414213) and was found once in our laboratory with another variant [V2013G] in a 51-year-old male with spinocerebellar ataxia, marked cerebellar atrophy, severe sensorineural axonal neuropathy -

Feb 08, 2023

Genome-Nilou Lab

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cerebral palsy Pathogenic:1

Jun 10, 2021

Neurogenetics Research Program, University of Adelaide

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs797045067; hg19: chr9-135172392;