chr2-166307036-A-G

Variant names:

• chr2-166307036-A-G
• rs1553496709
• NM_001365536.1:c.297T>C

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_001365536.1(SCN9A):​c.297T>C​(p.Arg99Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SCN9A NM_001365536.1 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.652
• Publications: 0 publications found

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]

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

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.48).
• BP6: Variant 2-166307036-A-G is Benign according to our data. Variant chr2-166307036-A-G is described in ClinVar as Likely_benign. ClinVar VariationId is 538492.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.652 with no splicing effect.

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.297T>C	p.Arg99Arg	synonymous	Exon 3 of 27	NP_001352465.1	Q15858-1
	SCN9A	NM_002977.4		c.297T>C	p.Arg99Arg	synonymous	Exon 3 of 27	NP_002968.2	Q15858-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCN9A	ENST00000642356.2	MANE Select	c.297T>C	p.Arg99Arg	synonymous	Exon 3 of 27	ENSP00000495601.1	Q15858-1
	SCN9A	ENST00000303354.11	TSL:5	c.297T>C	p.Arg99Arg	synonymous	Exon 3 of 27	ENSP00000304748.7	Q15858-1
	SCN9A	ENST00000409672.5	TSL:5	c.297T>C	p.Arg99Arg	synonymous	Exon 3 of 27	ENSP00000386306.1	Q15858-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Generalized epilepsy with febrile seizures plus, type 7;C2752089:Neuropathy, hereditary sensory and autonomic, type 2A (1)
-	-	1	Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.48
CADD	Benign	7.3
DANN	Benign	0.66
PhyloP100		-0.65
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=79/21	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: rs1553496709; hg19: chr2-167163546;