3-38894609-G-C

Variant names:

• chr3-38894609-G-C
• rs759694252
• NM_001349253.2:c.2759C>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BS1_Supporting BS2

The NM_001349253.2(SCN11A):​c.2759C>G​(p.Ala920Gly) variant causes a missense change. The variant allele was found at a frequency of 0.0000235 in 1,613,902 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A920V) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000025 (0 hom.)
• Consequence: SCN11A NM_001349253.2 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 7.06
• Publications: 1 publications found

Genes affected

SCN11A (HGNC:10583): (sodium voltage-gated channel alpha subunit 11) Voltage-gated sodium channels are transmembrane glycoprotein complexes composed of a large alpha subunit with 24 transmembrane domains and one or more regulatory beta subunits. They are responsible for the generation and propagation of action potentials in neurons and muscle. This gene encodes one member of the sodium channel alpha subunit gene family, and is highly expressed in nociceptive neurons of dorsal root ganglia and trigeminal ganglia. It mediates brain-derived neurotrophic factor-evoked membrane depolarization and is a major effector of peripheral inflammatory pain hypersensitivity. Mutations in this gene have been associated with hereditary sensory and autonomic neuropathy type VII and familial episodic pain syndrome-3. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2017]

SCN11A Gene-Disease associations (from GenCC):

• autosomal dominant hereditary sensory and autonomic neuropathy

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• familial episodic pain syndrome with predominantly lower limb involvement

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• hereditary sensory and autonomic neuropathy type 7

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia, G2P, Labcorp Genetics (formerly Invitae)
• sodium channelopathy-related small fiber neuropathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BS1: Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.0000253 (37/1461800) while in subpopulation NFE AF = 0.0000333 (37/1111952). AF 95% confidence interval is 0.0000245. There are 0 homozygotes in GnomAdExome4. There are 17 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAdExome4 at 37 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001349253.2. 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
	SCN11A	NM_001349253.2	MANE Select	c.2759C>G	p.Ala920Gly	missense	Exon 19 of 30	NP_001336182.1	Q9UI33-1
	SCN11A	NM_014139.3		c.2759C>G	p.Ala920Gly	missense	Exon 15 of 26	NP_054858.2	Q9UI33-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCN11A	ENST00000302328.9	TSL:5 MANE Select	c.2759C>G	p.Ala920Gly	missense	Exon 19 of 30	ENSP00000307599.3	Q9UI33-1
	SCN11A	ENST00000668754.1		c.2759C>G	p.Ala920Gly	missense	Exon 22 of 33	ENSP00000499569.1	Q9UI33-1
	SCN11A	ENST00000456224.7	TSL:5	c.2759C>G	p.Ala920Gly	missense	Exon 15 of 25	ENSP00000416757.3	Q9UI33-3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152102 Hom.: 0 Cov.: 32

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

GnomAD2 exomes AF: 0.0000199 AC: 5 AN: 251274 AF XY: 0.0000147

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: 0.00

Gnomad NFE exome AF: 0.0000440

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000253 AC: 37 AN: 1461800 Hom.: 0 Cov.: 31 AF XY: 0.0000234 AC XY: 17 AN XY: 727200

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86246

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000333 AC: 37 AN: 1111952

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152102 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74292

African (AFR) AF: 0.00 AC: 0 AN: 41418

American (AMR) AF: 0.00 AC: 0 AN: 15264

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10588

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68022

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

TwinsUK AF: 0.000539 AC: 2

ALSPAC AF: 0.00 AC: 0

ExAC AF: 0.0000165 AC: 2

EpiCase AF: 0.00

EpiControl AF: 0.000119

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Hereditary sensory and autonomic neuropathy type 7;C3809899:Familial episodic pain syndrome with predominantly lower limb involvement (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Benign	0.011	T
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.79	T
M_CAP	Uncertain	0.23	D
MetaRNN	Uncertain	0.73	D
MetaSVM	Uncertain	0.043	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		7.1
PrimateAI	Benign	0.37	T
PROVEAN	Uncertain	-2.7	D
REVEL	Uncertain	0.54
Sift	Benign	0.030	D
Sift4G	Benign	0.084	T
Polyphen		1.0	D
Vest4		0.51
MutPred		0.62		Loss of helix (P = 0.0558)
MVP		0.96
MPC		0.41
ClinPred		0.94	D
GERP RS		5.7
Varity_R		0.24
gMVP		0.25
Mutation Taster		=69/31	polymorphism

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

Other links and lift over

dbSNP: rs759694252; hg19: chr3-38936100;