Genetic Variant NM_001365536.1:c.129T>A (chr2-166311628-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001365536.1(SCN9A):c.129T>A(p.Asp43Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,656 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D43N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

SCN9A
NM_001365536.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -3.88

Publications

0 publications found

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:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.039315104).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001365536.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCN9A	NM_001365536.1	MANE Select	c.129T>A	p.Asp43Glu	missense	Exon 2 of 27	NP_001352465.1
	SCN9A	NM_002977.4		c.129T>A	p.Asp43Glu	missense	Exon 2 of 27	NP_002968.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
SCN9A	ENST00000642356.2	MANE Select	c.129T>A	p.Asp43Glu	missense	Exon 2 of 27	ENSP00000495601.1
SCN9A	ENST00000303354.11	TSL:5	c.129T>A	p.Asp43Glu	missense	Exon 2 of 27	ENSP00000304748.7
SCN9A	ENST00000409672.5	TSL:5	c.129T>A	p.Asp43Glu	missense	Exon 2 of 27	ENSP00000386306.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461656

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727106

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53400

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111826

Other (OTH)

AF:

0.00

AC:

AN:

60372

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.059

BayesDel_noAF

Benign

-0.32

CADD

Benign

0.0050

(source)

DANN

Benign

0.32

DEOGEN2

Benign

0.20

Eigen

Benign

-1.8

Eigen_PC

Benign

-1.9

FATHMM_MKL

Benign

0.051

LIST_S2

Benign

0.64

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.039

MetaSVM

Benign

-0.34

MutationAssessor

Benign

-0.045

PhyloP100

-3.9

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.1

REVEL

Benign

0.28

Sift

Benign

0.55

Sift4G

Benign

1.0

Vest4

0.074

MutPred

0.31

Gain of methylation at K39 (P = 0.1245)

MVP

0.12

MPC

0.11

ClinPred

0.033

GERP RS

-11

Varity_R

0.046

gMVP

0.17

Mutation Taster

=83/17

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over