chr2-166278306-G-C

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_001365536.1(SCN9A):c.2351C>G(p.Thr784Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000332 in 1,597,896 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000032 ( 1 hom. )

Consequence

SCN9A
NM_001365536.1 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4B:1

Conservation

PhyloP100: 10.0

Variant links:

Genes affected

SCN9A (HGNC:10597): (sodium voltage-gated channel alpha subunit 9) This gene encodes a voltage-gated sodium channel which plays a significant role in nociception signaling. Mutations in this gene have been associated with primary erythermalgia, channelopathy-associated insensitivity to pain, and paroxysmal extreme pain disorder. [provided by RefSeq, Aug 2009]

SCN9A links:

SCN1A-AS1 (HGNC:54069): (SCN1A and SCN9A antisense RNA 1)

SCN1A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.81

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SCN9A	NM_001365536.1 link	c.2351C>G	p.Thr784Ser	missense_variant	Exon 15 of 27	ENST00000642356.2	NP_001352465.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SCN9A	ENST00000642356.2 link	c.2351C>G	p.Thr784Ser	missense_variant	Exon 15 of 27		NM_001365536.1	ENSP00000495601.1	Q15858-1
SCN9A	ENST00000303354.11 link	c.2351C>G	p.Thr784Ser	missense_variant	Exon 15 of 27	5		ENSP00000304748.7	Q15858-1
SCN9A	ENST00000409672.5 link	c.2318C>G	p.Thr773Ser	missense_variant	Exon 15 of 27	5		ENSP00000386306.1	Q15858-3
SCN9A	ENST00000645907.1 link	c.2318C>G	p.Thr773Ser	missense_variant	Exon 15 of 27			ENSP00000495983.1	Q15858-4
SCN9A	ENST00000454569.6 link	c.2318C>G	p.Thr773Ser	missense_variant	Exon 15 of 15	1		ENSP00000413212.2	A0A0C4DG82

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000328

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000784

AC:

AN:

229628

Hom.:

AF XY:

0.0000482

AC XY:

AN XY:

124364

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000396

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000597

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000474

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000318

AC:

AN:

1445774

Hom.:

Cov.:

AF XY:

0.0000223

AC XY:

AN XY:

718276

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000312

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000767

Gnomad4 SAS exome

AF:

0.0000121

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000217

Gnomad4 OTH exome

AF:

0.0000835

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74296

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000328

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000982

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000365

AC:

ExAC

AF:

0.0000580

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:4Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Dec 09, 2019

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.T773S variant (also known as c.2318C>G), located in coding exon 14 of the SCN9A gene, results from a C to G substitution at nucleotide position 2318. The threonine at codon 773 is replaced by serine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Primary erythromelalgia;C0751122:Severe myoclonic epilepsy in infancy;C1833661:Paroxysmal extreme pain disorder;C1855739:Channelopathy-associated congenital insensitivity to pain, autosomal recessive;C2751778:Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A

Uncertain:1

Oct 31, 2018

Fulgent Genetics, Fulgent Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Uncertain:1

Oct 01, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Generalized epilepsy with febrile seizures plus, type 7

Uncertain:1

Nov 08, 2018

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A

Benign:1

Oct 24, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.70

BayesDel_addAF

Pathogenic

0.24

BayesDel_noAF

Pathogenic

0.42

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.86

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

Eigen

Pathogenic

0.72

Eigen_PC

Pathogenic

0.74

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Benign

0.76

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

M_CAP

Pathogenic

0.53

MetaRNN

Pathogenic

0.81

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

MetaSVM

Pathogenic

1.1

MutationAssessor

Benign

1.7

.;L;.;.;L;L;.;.

PrimateAI

Uncertain

0.64

PROVEAN

Uncertain

-3.6

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

REVEL

Pathogenic

0.90

Sift

Uncertain

0.018

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

Sift4G

Uncertain

0.024

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

Vest4

0.93

MutPred

0.59

Gain of glycosylation at T773 (P = 0.0302);.;Gain of glycosylation at T773 (P = 0.0302);Gain of glycosylation at T773 (P = 0.0302);.;.;.;Gain of glycosylation at T773 (P = 0.0302);

MVP

0.93

MPC

0.35

ClinPred

0.48

GERP RS

5.1

Varity_R

0.67

gMVP

0.51

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over