3-38894623-CCA-TAG

Variant names:

• chr3-38894623-CCA-TAG
• NM_001349253.2:c.2743_2745delTGGinsCTA
• SCN11A p.Trp915Leu

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001349253.2(SCN11A):​c.2743_2745delTGGinsCTA​(p.Trp915Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W915C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SCN11A NM_001349253.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.327
• Publications: 0 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: Uncertain_significance. The variant received 0 ACMG points.

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.2743_2745delTGGinsCTA	p.Trp915Leu	missense	N/A	NP_001336182.1	Q9UI33-1
	SCN11A	NM_014139.3		c.2743_2745delTGGinsCTA	p.Trp915Leu	missense	N/A	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.2743_2745delTGGinsCTA	p.Trp915Leu	missense	N/A	ENSP00000307599.3	Q9UI33-1
	SCN11A	ENST00000668754.1		c.2743_2745delTGGinsCTA	p.Trp915Leu	missense	N/A	ENSP00000499569.1	Q9UI33-1
	SCN11A	ENST00000456224.7	TSL:5	c.2743_2745delTGGinsCTA	p.Trp915Leu	missense	N/A	ENSP00000416757.3	Q9UI33-3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.33

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr3-38936114;