chr2-166278217-G-A

Position:

chr2-166278217-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001365536.1(SCN9A):c.2440C>T(p.Leu814Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,612,750 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

SCN9A
NM_001365536.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.269

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:):

SCN1A-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17047638).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SCN9A	NM_001365536.1 linkuse as main transcript	c.2440C>T	p.Leu814Phe	missense_variant	15/27	ENST00000642356.2	NP_001352465.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SCN9A	ENST00000642356.2 linkuse as main transcript	c.2440C>T	p.Leu814Phe	missense_variant	15/27		NM_001365536.1	ENSP00000495601.1	Q15858-1
SCN9A	ENST00000303354.11 linkuse as main transcript	c.2440C>T	p.Leu814Phe	missense_variant	15/27	5		ENSP00000304748.7	Q15858-1
SCN9A	ENST00000409672.5 linkuse as main transcript	c.2407C>T	p.Leu803Phe	missense_variant	15/27	5		ENSP00000386306.1	Q15858-3
SCN9A	ENST00000645907.1 linkuse as main transcript	c.2407C>T	p.Leu803Phe	missense_variant	15/27			ENSP00000495983.1	Q15858-4
SCN9A	ENST00000454569.6 linkuse as main transcript	c.2407C>T	p.Leu803Phe	missense_variant	15/15	1		ENSP00000413212.2	A0A0C4DG82

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152038

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000806

AC:

AN:

248244

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

134706

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 SAS 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:

0.00000137

AC:

AN:

1460712

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726650

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152038

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74258

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

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

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 30, 2021

This sequence change replaces leucine with phenylalanine at codon 803 of the SCN9A protein (p.Leu803Phe). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and phenylalanine. This variant is present in population databases (rs550245159, ExAC 0.003%). This variant has not been reported in the literature in individuals affected with SCN9A-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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

Benign

0.098

BayesDel_addAF

Benign

-0.053

BayesDel_noAF

Benign

-0.30

CADD

Benign

DANN

Benign

0.96

DEOGEN2

Uncertain

0.43

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

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.69

FATHMM_MKL

Benign

0.081

LIST_S2

Benign

0.79

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

M_CAP

Benign

0.072

MetaRNN

Benign

0.17

T;T;T;T;T;T;T;T

MetaSVM

Uncertain

0.15

MutationAssessor

Benign

-0.13

.;N;.;.;N;N;.;.

PrimateAI

Uncertain

0.51

PROVEAN

Benign

1.1

N;.;.;.;.;N;.;.

REVEL

Benign

0.20

Sift

Benign

0.91

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

Sift4G

Benign

0.28

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

Vest4

0.21

MutPred

0.67

Gain of helix (P = 0.0854);.;Gain of helix (P = 0.0854);Gain of helix (P = 0.0854);.;.;.;Gain of helix (P = 0.0854);

MVP

0.61

MPC

0.13

ClinPred

0.051

GERP RS

2.0

Varity_R

0.063

gMVP

0.59

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.090

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