Genetic Variant SETX:p.Ala1112Ala (chr9-132328262-A-G) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_001351528.2(SETX):c.3336T>C(p.Ala1112Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000784 in 1,613,956 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00049 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00081 ( 0 hom. )

Consequence

SETX
NM_001351528.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:14

Conservation

PhyloP100: 1.82

Publications

1 publications found

Variant links:

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: Ambry Genetics, Orphanet, 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: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet

SETX links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.8).

BP6

Variant 9-132328262-A-G is Benign according to our data. Variant chr9-132328262-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 448322.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.82 with no splicing effect.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.000493 (75/152204) while in subpopulation NFE AF = 0.000999 (68/68040). AF 95% confidence interval is 0.000808. There are 0 homozygotes in GnomAd4. There are 37 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001351528.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SETX	NM_015046.7	MANE Select	c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 26	NP_055861.3
SETX	NM_001351528.2		c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 27	NP_001338457.1
SETX	NM_001351527.2		c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 26	NP_001338456.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SETX	ENST00000224140.6	TSL:1 MANE Select	c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 26	ENSP00000224140.5
SETX	ENST00000923216.1		c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 28	ENSP00000593275.1
SETX	ENST00000923217.1		c.3336T>C	p.Ala1112Ala	synonymous	Exon 10 of 27	ENSP00000593276.1

Frequencies

GnomAD3 genomes

AF:

0.000493

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000999

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000371

AC:

AN:

250676

AF XY:

0.000376

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.0000463

Gnomad NFE exome

AF:

0.000794

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.000814

AC:

1190

AN:

1461752

Hom.:

Cov.:

AF XY:

0.000798

AC XY:

580

AN XY:

727164

show subpopulations

African (AFR)

AF:

0.000119

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00102

AC:

1138

AN:

1111972

Other (OTH)

AF:

0.000778

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.483

Heterozygous variant carriers

140

209

279

349

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

104

156

208

260

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000493

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.000498

AC XY:

AN XY:

74352

show subpopulations

African (AFR)

AF:

0.000169

AC:

AN:

41446

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5202

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000999

AC:

AN:

68040

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.501

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000736

Hom.:

Bravo

AF:

0.000453

EpiCase

AF:

0.000872

EpiControl

AF:

0.00101

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (7)

Amyotrophic lateral sclerosis type 4 (1)

Hereditary spastic paraplegia (1)

Inborn genetic diseases (1)

not specified (1)

SETX-related disorder (1)

Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2 (1)

Spinocerebellar ataxia, autosomal recessive, with axonal neuropathy 2;C1865409:Amyotrophic lateral sclerosis type 4 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.80

CADD

Benign

2.2

(source)

DANN

Benign

0.44

PhyloP100

1.8

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over