17-77482288-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_001113491.2(SEPTIN9):c.866G>A(p.Arg289His) variant causes a missense change. The variant allele was found at a frequency of 0.0000124 in 1,613,090 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

SEPTIN9
NM_001113491.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:2

Conservation

PhyloP100: 6.83

Publications

3 publications found

Variant links:

Genes affected

SEPTIN9 (HGNC:7323): (septin 9) This gene is a member of the septin family involved in cytokinesis and cell cycle control. This gene is a candidate for the ovarian tumor suppressor gene. Mutations in this gene cause hereditary neuralgic amyotrophy, also known as neuritis with brachial predilection. A chromosomal translocation involving this gene on chromosome 17 and the MLL gene on chromosome 11 results in acute myelomonocytic leukemia. Multiple alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Mar 2009]

SEPTIN9 Gene-Disease associations (from GenCC):

amyotrophic neuralgia
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
neuralgic amyotrophy
Inheritance: AD Classification: MODERATE Submitted by: ClinGen

SEPTIN9 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High AC in GnomAdExome4 at 16 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEPTIN9	NM_001113491.2 link	c.866G>A	p.Arg289His	missense_variant	Exon 4 of 12	ENST00000427177.6	NP_001106963.1	Q9UHD8-1
SEPTIN9	NM_006640.5 link	c.812G>A	p.Arg271His	missense_variant	Exon 3 of 11	ENST00000329047.13	NP_006631.2	Q9UHD8-2A0A0S2Z5A5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SEPTIN9	ENST00000427177.6 link	c.866G>A	p.Arg289His	missense_variant	Exon 4 of 12	1	NM_001113491.2	ENSP00000391249.1		Q9UHD8-1
SEPTIN9	ENST00000329047.13 link	c.812G>A	p.Arg271His	missense_variant	Exon 3 of 11	1	NM_006640.5	ENSP00000329161.8		Q9UHD8-2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000161

AC:

AN:

248302

AF XY:

0.00000741

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000178

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000110

AC:

AN:

1460912

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726728

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000232

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52624

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000989

AC:

AN:

1111860

Other (OTH)

AF:

0.0000166

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.466

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74342

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41434

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4838

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.513

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:

0.0000727

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.0000248

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease

Uncertain:1

Nov 01, 2013

Dept. of Medical Genetics, Telemark Hospital Trust, Telemark Hospital Trust

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:research

- -

not provided

Uncertain:1

Jan 22, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 271 of the SEPT9 protein (p.Arg271His). This variant is present in population databases (rs587781247, gnomAD 0.003%). This missense change has been observed in individual(s) with Charcot-Marie-Tooth disease (PMID: 25025039). This variant is also known as c.530G>A p.R177H. ClinVar contains an entry for this variant (Variation ID: 157523). Invitae Evidence Modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) indicates that this missense variant is not expected to disrupt SEPT9 protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.80

BayesDel_addAF

Uncertain

0.022

BayesDel_noAF

Benign

-0.11

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.27

T;.;.;.;.;.;.;.;.;.;T;.;T;T;T;T;.;.;.;.;.;T;.;T;.;T;.;.;T

Eigen

Uncertain

0.62

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.97

D;D;D;.;D;.;.;D;D;.;D;D;D;D;.;D;.;D;.;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.044

MetaRNN

Uncertain

0.65

D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D;D

MetaSVM

Benign

-0.88

MutationAssessor

Uncertain

2.2

M;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.

PhyloP100

6.8

PrimateAI

Pathogenic

0.86

PROVEAN

Uncertain

-4.1

D;.;D;.;D;.;.;D;.;D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.;.

REVEL

Uncertain

0.36

Sift

Benign

0.23

T;.;T;.;T;.;.;T;.;T;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;T;.;.

Sift4G

Benign

0.31

T;T;T;T;T;T;T;T;D;T;D;T;T;T;T;T;T;T;T;T;T;T;T;D;T;T;T;T;T

Polyphen

1.0

D;D;.;.;D;D;.;D;.;.;.;D;.;.;.;.;.;.;.;.;.;.;.;.;.;.;D;.;.

Vest4

0.51

MutPred

0.46

Loss of MoRF binding (P = 0.0209);.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;

MVP

0.68

MPC

1.7

ClinPred

0.97

GERP RS

5.1

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.37

gMVP

0.72

Mutation Taster

=35/65

disease causing

(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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over